2010-10-31 12:31:11 +01:00
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/*
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* Cppcheck - A tool for static C/C++ code analysis
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2015-01-03 12:14:58 +01:00
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* Copyright (C) 2007-2015 Daniel Marjamäki and Cppcheck team.
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2010-10-31 12:31:11 +01:00
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "tokenize.h"
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#include "checkuninitvar.h"
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#include "testsuite.h"
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#include <sstream>
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extern std::ostringstream errout;
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2011-10-13 20:53:06 +02:00
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class TestUninitVar : public TestFixture {
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2010-10-31 12:31:11 +01:00
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public:
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2014-11-20 14:20:09 +01:00
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TestUninitVar() : TestFixture("TestUninitVar") {
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2013-08-07 16:27:37 +02:00
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}
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2010-10-31 12:31:11 +01:00
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private:
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2014-03-24 09:59:05 +01:00
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Settings settings;
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2010-10-31 12:31:11 +01:00
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2014-11-20 14:20:09 +01:00
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void run() {
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2014-03-24 09:59:05 +01:00
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LOAD_LIB_2(settings.library, "std.cfg");
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2010-10-31 12:31:11 +01:00
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TEST_CASE(uninitvar1);
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2012-09-05 19:46:44 +02:00
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TEST_CASE(uninitvar_bitop); // using uninitialized operand in bit operation
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2010-10-31 12:31:11 +01:00
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TEST_CASE(uninitvar_alloc); // data is allocated but not initialized
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TEST_CASE(uninitvar_arrays); // arrays
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TEST_CASE(uninitvar_class); // class/struct
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TEST_CASE(uninitvar_enum); // enum variables
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TEST_CASE(uninitvar_if); // handling if
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TEST_CASE(uninitvar_loops); // handling for/while
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TEST_CASE(uninitvar_switch); // handling switch
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TEST_CASE(uninitvar_references); // references
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2012-06-23 16:27:57 +02:00
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TEST_CASE(uninitvar_return); // return
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2012-11-03 21:21:19 +01:00
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TEST_CASE(uninitvar_strncpy); // strncpy doesn't always null-terminate
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TEST_CASE(uninitvar_memset); // not null-terminated
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2013-02-10 13:36:40 +01:00
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TEST_CASE(uninitvar_memset_nonchar);
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2013-08-29 13:12:05 +02:00
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TEST_CASE(uninitvar_memset_char_access);
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2010-10-31 12:31:11 +01:00
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TEST_CASE(uninitvar_func); // analyse functions
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2011-02-26 20:08:37 +01:00
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TEST_CASE(func_uninit_var); // analyse function calls for: 'int a(int x) { return x+x; }'
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TEST_CASE(func_uninit_pointer); // analyse function calls for: 'void a(int *p) { *p = 0; }'
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2010-12-27 21:05:33 +01:00
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TEST_CASE(uninitvar_typeof); // typeof
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2011-12-13 21:57:27 +01:00
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// checking for uninitialized variables without using the
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// ExecutionPath functionality
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TEST_CASE(uninitvar2);
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2012-05-28 12:56:24 +02:00
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TEST_CASE(uninitvar3); // #3844
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2012-06-08 16:17:55 +02:00
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TEST_CASE(uninitvar4); // #3869 (reference)
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2012-06-13 19:09:51 +02:00
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TEST_CASE(uninitvar5); // #3861
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2012-06-22 16:39:39 +02:00
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TEST_CASE(uninitvar6); // handling unknown types in C and C++ files
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2012-12-20 19:45:30 +01:00
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TEST_CASE(uninitvar2_func); // function calls
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2012-12-24 19:11:13 +01:00
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TEST_CASE(uninitvar2_value); // value flow
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2013-01-16 20:28:29 +01:00
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TEST_CASE(uninitvar2_structmembers); // struct members
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2013-01-20 18:40:24 +01:00
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TEST_CASE(uninitvar2_while);
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2013-01-22 06:55:25 +01:00
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TEST_CASE(uninitvar2_4494); // #4494
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2013-12-04 20:32:20 +01:00
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TEST_CASE(uninitvar2_malloc); // malloc returns uninitialized data
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2014-07-06 17:50:21 +02:00
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TEST_CASE(uninitvar7); // ticket #5971
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2014-11-17 16:04:44 +01:00
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TEST_CASE(uninitvar8); // ticket #6230
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2015-01-19 06:38:54 +01:00
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TEST_CASE(uninitvar9); // ticket #6424
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2015-01-22 13:51:43 +01:00
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TEST_CASE(uninitvar_unconditionalTry);
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2015-01-30 19:16:25 +01:00
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TEST_CASE(uninitvar_funcptr); // #6404
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2013-11-06 17:53:09 +01:00
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TEST_CASE(syntax_error); // Ticket #5073
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2014-03-19 21:08:48 +01:00
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2015-01-21 16:26:27 +01:00
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TEST_CASE(uninitvar_posix_write);
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2015-01-23 17:29:18 +01:00
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TEST_CASE(uninitvar_posix_types);
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2015-01-21 16:26:27 +01:00
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2014-08-05 06:24:23 +02:00
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// dead pointer
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TEST_CASE(deadPointer);
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2010-10-31 12:31:11 +01:00
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}
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2014-11-20 14:20:09 +01:00
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void checkUninitVar(const char code[], const char filename[] = "test.cpp") {
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2010-12-01 18:00:55 +01:00
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// Clear the error buffer..
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errout.str("");
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2010-10-31 12:31:11 +01:00
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// Tokenize..
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2010-12-01 18:00:55 +01:00
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Tokenizer tokenizer(&settings, this);
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2010-10-31 12:31:11 +01:00
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std::istringstream istr(code);
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2012-06-22 19:57:07 +02:00
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tokenizer.tokenize(istr, filename);
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2013-12-30 17:45:28 +01:00
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tokenizer.simplifyTokenList2();
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2010-10-31 12:31:11 +01:00
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2012-03-16 17:28:05 +01:00
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// Check code..
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2010-10-31 12:31:11 +01:00
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CheckUninitVar check(&tokenizer, &settings, this);
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check.executionPaths();
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}
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2015-01-21 16:26:27 +01:00
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/** New checking that doesn't rely on ExecutionPath */
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void checkUninitVar2(const char code[], const char fname[] = "test.cpp", bool verify = true, bool debugwarnings = false) {
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// Clear the error buffer..
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errout.str("");
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// Tokenize..
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settings.experimental = true;
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settings.debugwarnings = debugwarnings;
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Tokenizer tokenizer(&settings, this);
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std::istringstream istr(code);
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tokenizer.tokenize(istr, fname);
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const std::string str1(tokenizer.tokens()->stringifyList(0, true));
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tokenizer.simplifyTokenList2();
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const std::string str2(tokenizer.tokens()->stringifyList(0, true));
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if (verify && str1 != str2)
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warnUnsimplified(str1, str2);
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// Check for redundant code..
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CheckUninitVar checkuninitvar(&tokenizer, &settings, this);
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checkuninitvar.testrunner = true;
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checkuninitvar.check();
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settings.debugwarnings = false;
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settings.experimental = true;
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}
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2015-01-21 16:45:15 +01:00
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void checkUninitVarB(const char code[], const char filename[] = "test.cpp") {
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// Clear the error buffer..
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errout.str("");
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// Tokenize..
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Tokenizer tokenizer(&settings, this);
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std::istringstream istr(code);
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tokenizer.tokenize(istr, filename);
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tokenizer.simplifyTokenList2();
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// Check code..
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CheckUninitVar check(&tokenizer, &settings, this);
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check.check();
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check.executionPaths();
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}
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2014-11-20 14:20:09 +01:00
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void uninitvar1() {
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2010-11-16 20:01:57 +01:00
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// Ticket #2207 - False negative
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checkUninitVar("void foo() {\n"
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" int a;\n"
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" b = c - a;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-11-16 20:01:57 +01:00
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ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
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2010-11-16 20:07:41 +01:00
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checkUninitVar("void foo() {\n"
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" int a;\n"
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" b = a - c;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-11-16 20:07:41 +01:00
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ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
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2011-09-28 20:46:09 +02:00
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checkUninitVar("void foo() {\n"
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" int *p;\n"
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" realloc(p,10);\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2011-09-28 20:46:09 +02:00
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ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: p\n", errout.str());
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2015-01-21 16:45:15 +01:00
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checkUninitVarB("void foo() {\n" // #5240
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" char *p = malloc(100);\n"
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" char *tmp = realloc(p,1000);\n"
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" if (!tmp) free(p);\n"
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"}");
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2013-12-13 07:15:59 +01:00
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ASSERT_EQUALS("", errout.str());
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2015-01-21 16:45:15 +01:00
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checkUninitVarB("void foo() {\n"
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" int *p = NULL;\n"
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" realloc(p,10);\n"
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"}");
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2011-09-28 20:46:09 +02:00
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ASSERT_EQUALS("", errout.str());
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2010-10-31 12:31:11 +01:00
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// dereferencing uninitialized pointer..
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checkUninitVar("static void foo()\n"
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"{\n"
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" Foo *p;\n"
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" p->abcd();\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
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checkUninitVar("static void foo()\n"
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"{\n"
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" Foo<int> *p;\n"
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" p->abcd();\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
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checkUninitVar("void f(Foo *p)\n"
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"{\n"
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" int a;\n"
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" p->a = malloc(4 * a);\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
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checkUninitVar("static void foo()\n"
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"{\n"
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" int *p;\n"
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" delete p;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
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checkUninitVar("static void foo()\n"
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"{\n"
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" int *p;\n"
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" delete [] p;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
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checkUninitVar("static void foo()\n"
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"{\n"
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" int *p;\n"
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" *p = 135;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
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2011-04-26 20:26:09 +02:00
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checkUninitVar("static void foo()\n"
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"{\n"
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" int *p;\n"
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" p[0] = 135;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2011-04-26 20:26:09 +02:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
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2010-10-31 12:31:11 +01:00
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checkUninitVar("static void foo()\n"
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"{\n"
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" int *x;\n"
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" int y = *x;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
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checkUninitVar("static void foo()\n"
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"{\n"
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" int *x;\n"
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" int &y(*x);\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
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2015-01-21 16:45:15 +01:00
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checkUninitVarB("void foo()\n"
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"{\n"
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" int x;\n"
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" int *y = &x;\n"
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("", errout.str());
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2015-01-21 16:45:15 +01:00
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checkUninitVarB("void foo()\n"
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"{\n"
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" int *x;\n"
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" int *&y = x;\n"
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"}");
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2011-09-03 18:53:14 +02:00
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ASSERT_EQUALS("", errout.str());
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2015-01-21 16:45:15 +01:00
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checkUninitVarB("void foo()\n"
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"{\n"
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" int x = xyz::x;\n"
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("", errout.str());
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checkUninitVar("void f()\n"
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"{\n"
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" int a;\n"
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" a = 5 + a;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
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checkUninitVar("void f()\n"
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"{\n"
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" int a;\n"
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" a++;\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
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2015-01-21 16:45:15 +01:00
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checkUninitVarB("void f()\n"
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"{\n"
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" extern int a;\n"
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" a++;\n"
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"}");
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2012-06-26 18:28:41 +02:00
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ASSERT_EQUALS("", errout.str());
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2010-10-31 12:31:11 +01:00
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checkUninitVar("void f()\n"
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"{\n"
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" int a;\n"
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" bar(4 * a);\n"
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2013-03-20 15:36:16 +01:00
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"}");
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2010-10-31 12:31:11 +01:00
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|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (i);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" for (int x = 0; i < 10; x++);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" for (int x = 0; x < 10; i++);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("static int foo(int x)\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" i = 0;\n"
|
2012-06-23 16:27:57 +02:00
|
|
|
" i++;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int ar[10];\n"
|
|
|
|
" int i;\n"
|
|
|
|
" ar[i] = 0;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int x, y;\n"
|
|
|
|
" x = (y = 10);\n"
|
|
|
|
" int z = y * 2;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void foo() {\n"
|
|
|
|
" int x, y;\n"
|
|
|
|
" x = ((y) = 10);\n"
|
|
|
|
"}");
|
2015-01-06 18:03:40 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2012-06-23 16:44:02 +02:00
|
|
|
// Ticket #3597
|
|
|
|
checkUninitVar("int f() {\n"
|
2012-09-05 19:46:44 +02:00
|
|
|
" int a;\n"
|
|
|
|
" int b = 1;\n"
|
|
|
|
" (b += a) = 1;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-06-23 16:44:02 +02:00
|
|
|
TODO_ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n","", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("int f() {\n"
|
2012-09-05 19:46:44 +02:00
|
|
|
" int a,b,c;\n"
|
|
|
|
" a = b = c;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-06-23 16:44:02 +02:00
|
|
|
TODO_ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: c\n", "", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" Foo p;\n"
|
|
|
|
" p.abcd();\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" Foo p;\n"
|
|
|
|
" int x = p.abcd();\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2012-06-23 16:27:57 +02:00
|
|
|
// Unknown types
|
2012-06-23 15:52:35 +02:00
|
|
|
{
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a()\n"
|
2015-01-21 16:17:58 +01:00
|
|
|
"{\n"
|
|
|
|
" A ret;\n"
|
|
|
|
" return ret;\n"
|
|
|
|
"}");
|
2012-06-23 15:52:35 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:17:58 +01:00
|
|
|
checkUninitVar2("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" A ret;\n"
|
|
|
|
" return ret;\n"
|
|
|
|
"}\n",
|
|
|
|
"test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:4]: (error) Uninitialized variable: ret\n", errout.str());
|
2012-06-27 20:44:19 +02:00
|
|
|
|
|
|
|
// #3916 - avoid false positive
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(float x) {\n"
|
|
|
|
" union lf { long l; float f; } u_lf;\n"
|
|
|
|
" float hx = (u_lf.f = (x), u_lf.l);\n"
|
|
|
|
"}\n",
|
|
|
|
"test.c");
|
2012-06-27 20:44:19 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-06-23 15:52:35 +02:00
|
|
|
}
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" int x[10];\n"
|
|
|
|
" int *y = x;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" int x;\n"
|
|
|
|
" int *y = &x;\n"
|
|
|
|
" *y = 0;\n"
|
|
|
|
" x++;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" char x[10], y[10];\n"
|
|
|
|
" char *z = x;\n"
|
|
|
|
" memset(z, 0, sizeof(x));\n"
|
|
|
|
" memcpy(y, x, sizeof(x));\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2012-06-23 16:27:57 +02:00
|
|
|
// Handling >> and <<
|
|
|
|
{
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int a() {\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" std::cin >> ret;\n"
|
|
|
|
" ret++;\n"
|
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2015-01-22 22:55:08 +01:00
|
|
|
checkUninitVarB("void f(int b) {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" std::cin >> b >> a;\n"
|
|
|
|
" return a;"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f(int i) {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" i >> a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
2012-06-23 16:27:57 +02:00
|
|
|
checkUninitVar("int a() {\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" int a = value >> ret;\n"
|
|
|
|
" ret++;\n"
|
|
|
|
"}\n",
|
|
|
|
"test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:3]: (error) Uninitialized variable: ret\n", errout.str());
|
2012-06-23 12:41:00 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo() {\n" // #3707
|
|
|
|
" Node node;\n"
|
|
|
|
" int x;\n"
|
|
|
|
" node[\"abcd\"] >> x;\n"
|
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-04-24 19:50:54 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int a(FArchive &arc) {\n" // #3060 (initialization through operator<<)
|
|
|
|
" int *p;\n"
|
|
|
|
" arc << p;\n"
|
|
|
|
" return *p;\n"
|
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-09-04 12:53:53 +02:00
|
|
|
|
2012-06-23 16:27:57 +02:00
|
|
|
checkUninitVar("int a() {\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" int a = value << ret;\n"
|
|
|
|
" return ret;\n"
|
|
|
|
"}\n",
|
|
|
|
"test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:3]: (error) Uninitialized variable: ret\n", errout.str());
|
2012-12-18 19:02:30 +01:00
|
|
|
|
|
|
|
// #4320
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" a << 1;\n"
|
|
|
|
" return a;\n"
|
|
|
|
"}");
|
2012-12-18 19:02:30 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-22 22:55:08 +01:00
|
|
|
|
|
|
|
// #4673
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" std::cout << a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f(std::ostringstream& os) {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" os << a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" std::cout << 1 << a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f(std::ostringstream& os) {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" os << 1 << a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
2012-06-23 16:27:57 +02:00
|
|
|
}
|
2012-06-23 12:41:00 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a() {\n" // asm
|
|
|
|
" int x;\n"
|
|
|
|
" asm();\n"
|
|
|
|
" x++;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" int x[10];\n"
|
|
|
|
" struct xyz xyz1 = { .x = x };\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" struct S *s;\n"
|
|
|
|
" s->x = 0;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: s\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" struct S *s;\n"
|
|
|
|
" FOREACH() { }\n"
|
|
|
|
" s->x = 0;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: s\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void a()\n"
|
|
|
|
"{\n"
|
|
|
|
" struct S *s1;\n"
|
|
|
|
" struct S *s2;\n"
|
|
|
|
" FOREACH(s1) { }\n"
|
|
|
|
" s2->x = 0;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: s2\n", errout.str());
|
|
|
|
|
|
|
|
// #1533
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("char a()\n"
|
|
|
|
"{\n"
|
|
|
|
" char key;\n"
|
|
|
|
" struct A msg = { .buf = {&key} };\n"
|
|
|
|
" init(&msg);\n"
|
|
|
|
" key++;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *buf = malloc(100);\n"
|
|
|
|
" struct ABC *abc = buf;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("class Fred {\n"
|
|
|
|
"public:\n"
|
|
|
|
" FILE *f;\n"
|
|
|
|
" ~Fred();\n"
|
|
|
|
"}\n"
|
|
|
|
"Fred::~Fred()\n"
|
|
|
|
"{\n"
|
|
|
|
" fclose(f);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int c;\n"
|
|
|
|
" ab(sizeof(xyz), &c);\n"
|
|
|
|
" if (c);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int c;\n"
|
|
|
|
" a = (f2(&c));\n"
|
|
|
|
" c++;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void f(int a)\n"
|
|
|
|
"{\n"
|
|
|
|
" if (a) {\n"
|
|
|
|
" char *p;\n"
|
|
|
|
" *p = 0;\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: p\n", errout.str());
|
|
|
|
|
|
|
|
// +=
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int c;\n"
|
|
|
|
" c += 2;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *s = malloc(100);\n"
|
|
|
|
" *s += 10;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: s\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int a[10];\n"
|
2010-11-05 19:24:14 +01:00
|
|
|
" a[0] = 10 - a[1];\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-11-05 19:24:14 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
// goto/setjmp/longjmp..
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo(int x)\n"
|
|
|
|
"{\n"
|
|
|
|
" long b;\n"
|
|
|
|
" if (g()) {\n"
|
|
|
|
" b =2;\n"
|
|
|
|
" goto found;\n"
|
|
|
|
" }\n"
|
|
|
|
"\n"
|
|
|
|
" return;\n"
|
|
|
|
"\n"
|
|
|
|
"found:\n"
|
|
|
|
" int a = b;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" jmp_buf env;\n"
|
|
|
|
" int a;\n"
|
|
|
|
" int val = setjmp(env);\n"
|
|
|
|
" if(val)\n"
|
|
|
|
" return a;\n"
|
|
|
|
" a = 1;\n"
|
|
|
|
" longjmp(env, 1);\n"
|
|
|
|
"}");
|
2015-01-21 16:49:34 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
// macro_for..
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int retval;\n"
|
|
|
|
" if (condition) {\n"
|
|
|
|
" for12(1,2) { }\n"
|
|
|
|
" retval = 1;\n"
|
|
|
|
" }\n"
|
|
|
|
" else\n"
|
|
|
|
" retval = 2;\n"
|
|
|
|
" return retval;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" goto exit;\n"
|
|
|
|
" i++;\n"
|
|
|
|
"exit:\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-08-01 03:33:43 +02:00
|
|
|
|
2012-06-24 00:00:15 +02:00
|
|
|
// Ticket #3873 (false positive)
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("MachineLoopRange *MachineLoopRanges::getLoopRange(const MachineLoop *Loop) {\n"
|
|
|
|
" MachineLoopRange *&Range = Cache[Loop];\n"
|
|
|
|
" if (!Range)\n"
|
|
|
|
" Range = new MachineLoopRange(Loop, Allocator, *Indexes);\n"
|
|
|
|
" return Range;\n"
|
|
|
|
"}");
|
2012-06-24 00:00:15 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-08-27 15:48:21 +02:00
|
|
|
|
|
|
|
// #4040 - False positive
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int x) {\n"
|
|
|
|
" int iter;\n"
|
|
|
|
" {\n"
|
|
|
|
" union\n"
|
|
|
|
" {\n"
|
|
|
|
" int asInt;\n"
|
|
|
|
" double asDouble;\n"
|
|
|
|
" };\n"
|
|
|
|
"\n"
|
|
|
|
" iter = x;\n"
|
|
|
|
" }\n"
|
|
|
|
" return 1 + iter;\n"
|
|
|
|
"}");
|
2012-08-27 15:48:21 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2014-08-05 16:11:42 +02:00
|
|
|
|
|
|
|
// C++11 style initialization
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
|
|
|
" int i = 0;\n"
|
|
|
|
" int j{ i };\n"
|
|
|
|
" return j;\n"
|
|
|
|
"}");
|
2014-08-05 16:11:42 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar3() { // #3844
|
2012-05-28 12:56:24 +02:00
|
|
|
// avoid false positive
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("namespace std _GLIBCXX_VISIBILITY(default)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
"_GLIBCXX_BEGIN_NAMESPACE_CONTAINER\n"
|
|
|
|
" typedef unsigned long _Bit_type;\n"
|
|
|
|
" struct _Bit_reference\n"
|
|
|
|
" {\n"
|
|
|
|
" _Bit_type * _M_p;\n"
|
|
|
|
" _Bit_type _M_mask;\n"
|
|
|
|
" _Bit_reference(_Bit_type * __x, _Bit_type __y)\n"
|
|
|
|
" : _M_p(__x), _M_mask(__y) { }\n"
|
|
|
|
" };\n"
|
|
|
|
"}");
|
2012-05-28 12:56:24 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
}
|
2010-11-16 20:16:44 +01:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_bitop() {
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("void foo() {\n"
|
|
|
|
" int b;\n"
|
|
|
|
" c = a | b;\n"
|
|
|
|
"}");
|
2010-11-16 20:16:44 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: b\n", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("void foo() {\n"
|
|
|
|
" int b;\n"
|
|
|
|
" c = b | a;\n"
|
|
|
|
"}");
|
2010-11-16 20:16:44 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: b\n", errout.str());
|
|
|
|
}
|
|
|
|
|
2010-10-31 12:31:11 +01:00
|
|
|
// if..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_if() {
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("static void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" Foo *p;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" p = new Foo;\n"
|
|
|
|
" p->abcd();\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: p\n", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("static void foo(int x)\n"
|
|
|
|
"{\n"
|
|
|
|
" int a;\n"
|
|
|
|
" if (x==1);\n"
|
|
|
|
" if (x==2);\n"
|
|
|
|
" x = a;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" i = 22;\n"
|
|
|
|
" else\n"
|
|
|
|
" i = 33;\n"
|
|
|
|
" return i;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" i = 22;\n"
|
|
|
|
" else\n"
|
|
|
|
" {\n"
|
|
|
|
" char *y = {0};\n"
|
|
|
|
" i = 33;\n"
|
|
|
|
" }\n"
|
|
|
|
" return i;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" {\n"
|
|
|
|
" struct abc abc1 = (struct abc) { .a=0, .b=0, .c=0 };\n"
|
|
|
|
" i = 22;\n"
|
|
|
|
" }\n"
|
|
|
|
" else\n"
|
|
|
|
" {\n"
|
|
|
|
" i = 33;\n"
|
|
|
|
" }\n"
|
|
|
|
" return i;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void foo(int x)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" Foo *p;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" p = new Foo;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" p->abcd();\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo(int a)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int n;\n"
|
|
|
|
" int condition;\n"
|
|
|
|
" if(a == 1) {\n"
|
|
|
|
" n=0;\n"
|
|
|
|
" condition=0;\n"
|
|
|
|
" }\n"
|
|
|
|
" else {\n"
|
|
|
|
" n=1;\n"
|
|
|
|
" }\n"
|
|
|
|
"\n"
|
|
|
|
" if( n == 0) {\n"
|
|
|
|
" a=condition;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" C *c;\n"
|
|
|
|
" if (fun(&c));\n"
|
|
|
|
" c->Release();\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" char a[10];\n"
|
|
|
|
" if (a[0] = x){}\n"
|
|
|
|
"}");
|
2012-07-17 07:03:40 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo(int x)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (one())\n"
|
|
|
|
" i = 1;\n"
|
|
|
|
" else\n"
|
|
|
|
" return 3;\n"
|
|
|
|
" return i;\n"
|
|
|
|
"}");
|
2010-11-15 20:35:01 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// Ticket #2207 - False positive
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo(int x) {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" int a;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" a = 1;\n"
|
|
|
|
" if (!x)\n"
|
|
|
|
" return;\n"
|
|
|
|
" b = (c - a);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" if (one())\n"
|
|
|
|
" ret = 1;\n"
|
|
|
|
" else\n"
|
|
|
|
" throw 3;\n"
|
|
|
|
" return ret;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("int f(int a)\n"
|
|
|
|
"{\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" if (a == 1)\n"
|
|
|
|
" ret = 1;\n"
|
|
|
|
" else\n"
|
|
|
|
" XYZ ret = 2;\n" // XYZ may be an unexpanded macro so bailout the checking of "ret".
|
|
|
|
" return ret;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) Uninitialized variable: ret\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int a, int b)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (a)\n"
|
|
|
|
" x = a;\n"
|
|
|
|
" else {\n"
|
|
|
|
" do { } while (f2());\n"
|
|
|
|
" x = b;\n"
|
|
|
|
" }\n"
|
|
|
|
" return x;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo(long verbose,bool bFlag)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" double t;\n"
|
|
|
|
" if (bFlag)\n"
|
|
|
|
" {\n"
|
|
|
|
" if (verbose)\n"
|
|
|
|
" t = 1;\n"
|
|
|
|
" if (verbose)\n"
|
|
|
|
" std::cout << (12-t);\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int test(int cond1, int cond2) {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" int foo;\n"
|
|
|
|
" if (cond1 || cond2) {\n"
|
|
|
|
" if (cond2)\n"
|
|
|
|
" foo = 0;\n"
|
|
|
|
" }\n"
|
|
|
|
" if (cond2) {\n"
|
|
|
|
" int t = foo*foo;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2011-01-05 19:54:56 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2010-10-31 12:31:11 +01:00
|
|
|
// ? :
|
|
|
|
checkUninitVar("static void foo(int v)\n"
|
|
|
|
"{\n"
|
|
|
|
" int x;\n"
|
|
|
|
" x = v <= 0 ? -1 : x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-06-23 12:19:03 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" const char *msgid1, *msgid2;\n"
|
|
|
|
" int ret = bar(&msgid1);\n"
|
|
|
|
" if (ret > 0) {\n"
|
|
|
|
" ret = bar(&msgid2);\n"
|
|
|
|
" }\n"
|
|
|
|
" ret = ret <= 0 ? -1 :\n"
|
|
|
|
" strcmp(msgid1, msgid2) == 0;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("void foo(int a, int b)\n"
|
|
|
|
"{\n"
|
|
|
|
" int x; x = (a<b) ? 1 : 0;\n"
|
|
|
|
" int y = y;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: y\n", errout.str());
|
|
|
|
|
|
|
|
// ; { .. }
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int retval;\n"
|
|
|
|
" if (condition) {\n"
|
|
|
|
" { }\n"
|
|
|
|
" retval = 1; }\n"
|
|
|
|
" else\n"
|
|
|
|
" retval = 2;\n"
|
|
|
|
" return retval;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" {\n"
|
|
|
|
" for (int i = 0; i < 10; ++i)\n"
|
|
|
|
" { }\n"
|
|
|
|
" }\n"
|
|
|
|
"\n"
|
|
|
|
" { }\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-09-09 19:49:40 +02:00
|
|
|
|
2015-01-06 07:44:04 +01:00
|
|
|
// ({ .. })
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (abc) { x = 123; }\n"
|
|
|
|
" else { a = ({b=c;}); x = 456; }\n"
|
|
|
|
" ++x;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-06 07:44:04 +01:00
|
|
|
|
2012-09-09 19:49:40 +02:00
|
|
|
// Ticket #3098 - False negative uninitialized variable
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *c1,*c2;\n"
|
|
|
|
" if(strcoll(c1,c2))\n"
|
|
|
|
" {\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-09-09 19:49:40 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c1\n"
|
|
|
|
"[test.cpp:4]: (error) Uninitialized variable: c2\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(char *c1, char *c2)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" if(strcoll(c1,c2))\n"
|
|
|
|
" {\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2012-09-09 19:49:40 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *c1;\n"
|
|
|
|
" c1=strcpy(c1,\"test\");\n"
|
|
|
|
"}");
|
2012-09-09 19:49:40 +02:00
|
|
|
TODO_ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c1\n","", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(char *c1)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" c1=strcpy(c1,\"test\");\n"
|
|
|
|
"}");
|
2012-09-09 19:49:40 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// handling for/while loops..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_loops() {
|
2010-10-31 12:31:11 +01:00
|
|
|
// for..
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" for (int i = 0; i < 4; ++i) {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" b(4*a);\n"
|
|
|
|
" }"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int k;\n"
|
|
|
|
" for (int i = 0; i < 4; ++i) {\n"
|
|
|
|
" k = k + 2;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: k\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" gchar sel[10];\n"
|
|
|
|
" for (int i = 0; i < 4; ++i) {\n"
|
|
|
|
" int sz = sizeof(sel);\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-11-13 08:03:59 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("enum ABCD { A, B, C, D };\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"\n"
|
|
|
|
"static void f(char *str ) {\n"
|
|
|
|
" enum ABCD i;\n"
|
|
|
|
" for (i = 0; i < D; i++) {\n"
|
|
|
|
" str[i] = 0;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void x() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" do {\n"
|
|
|
|
" Token * tok;\n"
|
|
|
|
" for (tok = a; tok; tok = tok->next())\n"
|
|
|
|
" {\n"
|
|
|
|
" }\n"
|
|
|
|
" } while (tok2);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// while..
|
|
|
|
checkUninitVar("int f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" while (fgets())\n"
|
|
|
|
" i = 1;\n"
|
|
|
|
" return i;"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("void f(int i)\n"
|
|
|
|
"{\n"
|
|
|
|
" int a;\n"
|
|
|
|
" while (i < 10)\n"
|
|
|
|
" i++;\n"
|
|
|
|
" a++;"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: a\n", errout.str());
|
2010-11-24 18:08:21 +01:00
|
|
|
|
|
|
|
// Ticket #2226: C++0x loop
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" container c;\n"
|
|
|
|
" for (iterator it : c) {\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-11-24 18:08:21 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2010-12-23 09:15:45 +01:00
|
|
|
// Ticket #2345: False positive in sub-condition in if inside a loop
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int x) {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" const PoolItem* pItem;\n"
|
|
|
|
" while (x > 0) {\n"
|
|
|
|
" if (GetItem(&pItem) && (*pItem != rPool))\n"
|
|
|
|
" { }\n"
|
|
|
|
" x--;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-12-23 09:15:45 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-21 16:17:58 +01:00
|
|
|
checkUninitVar2("void f(int x) {\n"
|
|
|
|
" const PoolItem* pItem;\n"
|
|
|
|
" while (x > 0) {\n"
|
|
|
|
" if (*pItem != rPool)\n"
|
|
|
|
" { }\n"
|
|
|
|
" x--;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: pItem\n", errout.str());
|
2011-02-19 20:19:46 +01:00
|
|
|
|
|
|
|
// #2231 - conditional initialization in loop..
|
|
|
|
checkUninitVar("int foo(char *a) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
"\n"
|
|
|
|
" for (int i = 0; i < 10; ++i) {\n"
|
|
|
|
" if (a[i] == 'x') {\n"
|
|
|
|
" x = i;\n"
|
|
|
|
" break;\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
"\n"
|
|
|
|
" return x;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:11]: (error) Uninitialized variable: x\n", errout.str());
|
2011-07-25 16:35:30 +02:00
|
|
|
|
|
|
|
// Ticket #2796
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" while (true) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (y) x = 0;\n"
|
|
|
|
" else break;\n"
|
|
|
|
" return x;\n" // <- x is initialized
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2011-07-25 16:35:30 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-11-04 09:49:49 +01:00
|
|
|
|
|
|
|
// Assignment in for. Ticket #3287
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo(char* in, bool b) {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" char* c;\n"
|
|
|
|
" if (b) for (c = in; *c == 0; ++c) {}\n"
|
|
|
|
" else c = in + strlen(in) - 1;\n"
|
|
|
|
" *c = 0;\n"
|
|
|
|
"}");
|
2013-02-02 16:01:34 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// switch..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_switch() {
|
2010-10-31 12:31:11 +01:00
|
|
|
checkUninitVar("void f(int x)\n"
|
|
|
|
"{\n"
|
|
|
|
" short c;\n"
|
|
|
|
" switch(x) {\n"
|
|
|
|
" case 1:\n"
|
|
|
|
" c++;\n"
|
|
|
|
" break;\n"
|
|
|
|
" };\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("char * f()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" static char ret[200];\n"
|
|
|
|
" memset(ret, 0, 200);\n"
|
|
|
|
" switch (x)\n"
|
|
|
|
" {\n"
|
|
|
|
" case 1: return ret;\n"
|
|
|
|
" case 2: return ret;\n"
|
|
|
|
" }\n"
|
|
|
|
" return 0;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo(const int iVar, unsigned int slot, unsigned int pin)\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (iVar == 0)\n"
|
|
|
|
" {\n"
|
|
|
|
" switch (slot)\n"
|
|
|
|
" {\n"
|
|
|
|
" case 4: return 5;\n"
|
|
|
|
" default: return -1;\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
" else\n"
|
|
|
|
" {\n"
|
|
|
|
" switch (pin)\n"
|
|
|
|
" {\n"
|
|
|
|
" case 0: i = 2; break;\n"
|
|
|
|
" default: i = -1; break;\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
" return i;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// No segmentation fault
|
|
|
|
checkUninitVar("void a() try\n"
|
|
|
|
"{\n"
|
|
|
|
" {\n"
|
|
|
|
" while (1) {\n"
|
|
|
|
" switch (1) {\n"
|
|
|
|
" case 1: {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
" } catch (...) {\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
// #1855 - switch(foo(&x))
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int a()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int x;\n"
|
|
|
|
" switch (foo(&x))\n"
|
|
|
|
" {\n"
|
|
|
|
" case 1:\n"
|
|
|
|
" return x;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-10-30 18:19:09 +01:00
|
|
|
|
|
|
|
// #3231 - ({ switch .. })
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" ({\n"
|
|
|
|
" switch(sizeof(int)) {\n"
|
|
|
|
" case 4:\n"
|
|
|
|
" default:\n"
|
|
|
|
" (a)=0;\n"
|
|
|
|
" break;\n"
|
|
|
|
" };\n"
|
|
|
|
" })\n"
|
|
|
|
"}");
|
2011-10-30 18:19:09 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// arrays..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_arrays() {
|
2010-10-31 12:31:11 +01:00
|
|
|
checkUninitVar("int f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char a[10];\n"
|
|
|
|
" a[a[0]] = 0;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("int f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char a[10];\n"
|
|
|
|
" char c = *a;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
2010-11-10 20:20:05 +01:00
|
|
|
checkUninitVar("int f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char a[SIZE+10];\n"
|
|
|
|
" char c = *a;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-11-10 20:20:05 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char a[10];\n"
|
|
|
|
" *a = '\\0';\n"
|
|
|
|
" int i = strlen(a);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" char a, b[10];\n"
|
|
|
|
" a = b[0] = 0;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" char a[10], b[10];\n"
|
|
|
|
" a[0] = b[0] = 0;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" char a[10], *p;\n"
|
|
|
|
" *(p = a) = 0;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" char a[10], *p;\n"
|
|
|
|
" p = &(a[10]);\n"
|
|
|
|
"}");
|
2011-05-05 21:26:18 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" char c[50] = \"\";\n"
|
|
|
|
" strcat(c, \"test\");\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char s[20];\n"
|
|
|
|
" strcpy(s2, s);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"};");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: s\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char s[20];\n"
|
|
|
|
" strcat(s, \"abc\");\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"};");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: s\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char s[20];\n"
|
|
|
|
" strchr(s, ' ');\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"};");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: s\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int y[2];\n"
|
|
|
|
" int s;\n"
|
|
|
|
" GetField( y + 0, y + 1 );\n"
|
|
|
|
" s = y[0]*y[1];\n"
|
|
|
|
"}");
|
2010-11-12 16:11:44 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" int a[2];\n"
|
|
|
|
" init(a - 1);\n"
|
|
|
|
" int b = a[0];\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-12-17 21:20:04 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
"{\n"
|
|
|
|
" Fred a[2];\n"
|
|
|
|
" Fred b = a[0];\n"
|
|
|
|
"}");
|
2010-12-17 21:20:04 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-12-18 10:06:21 +01:00
|
|
|
|
|
|
|
// Ticket #2320
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" char a[2];\n"
|
|
|
|
" char *b = (a+2) & 7;\n"
|
|
|
|
"}");
|
2010-12-18 10:06:21 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-09-05 20:18:58 +02:00
|
|
|
|
|
|
|
checkUninitVar("void f() {\n" // Ticket #3050
|
|
|
|
" char a[2];\n"
|
|
|
|
" printf(\"%s\", a);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
2012-01-13 07:26:56 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // Ticket #5108 (fp)
|
2014-12-15 15:41:03 +01:00
|
|
|
" const char *a;\n"
|
|
|
|
" printf(\"%s\", a=\"abc\");\n"
|
|
|
|
"}");
|
2013-11-04 23:09:15 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // Ticket #3497
|
2014-12-15 15:41:03 +01:00
|
|
|
" char header[1];\n"
|
|
|
|
" *((unsigned char*)(header)) = 0xff;\n"
|
|
|
|
" return header[0];\n"
|
|
|
|
"}");
|
2012-01-13 07:26:56 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-01-21 20:42:41 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // Ticket #3497
|
2014-12-15 15:41:03 +01:00
|
|
|
" char header[1];\n"
|
|
|
|
" *((unsigned char*)((unsigned char *)(header))) = 0xff;\n"
|
|
|
|
" return header[0];\n"
|
|
|
|
"}");
|
2012-01-21 20:42:41 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-03-16 17:28:05 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" ABC abc;\n"
|
|
|
|
" int a[1];\n"
|
|
|
|
"\n"
|
|
|
|
" abc.a = a;\n"
|
|
|
|
" init(&abc);\n"
|
|
|
|
" return a[0];\n"
|
|
|
|
"}");
|
2012-03-16 17:28:05 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-04-26 13:37:13 +02:00
|
|
|
|
|
|
|
// ticket #3344
|
|
|
|
checkUninitVar("void f(){\n"
|
|
|
|
" char *strMsg = \"This is a message\";\n"
|
|
|
|
" char *buffer=(char*)malloc(128*sizeof(char));\n"
|
|
|
|
" strcpy(strMsg,buffer);\n"
|
|
|
|
" free(buffer);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: buffer\n", errout.str());
|
2012-05-25 16:28:32 +02:00
|
|
|
|
|
|
|
// #3845
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" int a[1] = {5};\n"
|
|
|
|
" return a[0];\n"
|
|
|
|
"}");
|
2012-05-25 16:28:32 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" int a[2][2] = {{3,4}, {5,6}};\n"
|
|
|
|
" return a[0][1];\n"
|
|
|
|
"}");
|
2012-05-25 16:28:32 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("int foo() {\n"
|
|
|
|
" int a[1];\n"
|
|
|
|
" return a[0];\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
2014-12-15 15:41:03 +01:00
|
|
|
checkUninitVar2("int foo() {\n"
|
|
|
|
" int a[2][2];\n"
|
|
|
|
" return a[0][1];\n"
|
|
|
|
"}");
|
2012-05-25 16:28:32 +02:00
|
|
|
TODO_ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", "", errout.str());
|
2013-11-25 06:38:23 +01:00
|
|
|
|
|
|
|
// # 4740
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 15:41:03 +01:00
|
|
|
" int *a[2][19];\n"
|
|
|
|
" int **b = a[0];\n"
|
|
|
|
"}");
|
2013-11-25 06:38:23 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// alloc..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_alloc() {
|
2010-10-31 12:31:11 +01:00
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *s = malloc(100);\n"
|
|
|
|
" strcat(s, \"abc\");\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"};");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: s\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2012-05-16 09:56:39 +02:00
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *s = malloc(100);\n"
|
|
|
|
" perror(s);\n"
|
|
|
|
"};");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: s\n", errout.str());
|
2012-05-16 09:56:39 +02:00
|
|
|
|
2010-10-31 12:31:11 +01:00
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *s1 = new char[10];\n"
|
|
|
|
" char *s2 = new char[strlen(s1)];\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"};");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: s1\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *p = malloc(64);\n"
|
|
|
|
" int x = p[0];\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: p\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *p = malloc(64);\n"
|
|
|
|
" if (p[0]) { }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: p\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *p = malloc(64);\n"
|
|
|
|
" return p[0];\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: p\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" Fred *fred = new Fred;\n"
|
|
|
|
" fred->foo();\n"
|
2015-01-22 10:35:17 +01:00
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVarB("struct Fred { int i; Fred(int, float); };\n"
|
|
|
|
"void f() {\n"
|
|
|
|
" Fred *fred = new Fred(1, 2);\n"
|
|
|
|
" fred->foo();\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" Fred *fred = malloc(sizeof(Fred));\n"
|
|
|
|
" x(&fred->f);\n"
|
2015-01-22 10:35:17 +01:00
|
|
|
"}");
|
2010-11-15 17:11:08 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" Fred *fred = malloc(sizeof(Fred));\n"
|
|
|
|
" x(fred->f);\n"
|
2015-01-22 10:35:17 +01:00
|
|
|
"}");
|
2015-01-21 22:26:44 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-11-27 17:34:54 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo(char *s)\n"
|
|
|
|
"{\n"
|
|
|
|
" char *a = malloc(100);\n"
|
|
|
|
" *a = *s;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *a;\n"
|
|
|
|
" if (a);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *a = malloc(100);\n"
|
|
|
|
" if (a);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" ABC *abc = malloc(100);\n"
|
|
|
|
" abc->a = 123;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" ABC *abc = malloc(100);\n"
|
|
|
|
" abc->a.word = 123;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" ABC *abc = malloc(100);\n"
|
|
|
|
" abc->a = 123;\n"
|
|
|
|
" abc->a += 123;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" ABC *abc = malloc(100);\n"
|
|
|
|
" free(abc);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *s = malloc(100);\n"
|
|
|
|
" if (!s)\n"
|
|
|
|
" return;\n"
|
|
|
|
" char c = *s;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"};");
|
2012-11-01 18:40:20 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Memory is allocated but not initialized: s\n", errout.str());
|
2012-05-14 18:34:39 +02:00
|
|
|
|
|
|
|
// #3708 - false positive when using ptr typedef
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" uintptr_t x = malloc(100);\n"
|
|
|
|
" uintptr_t y = x + 10;\n" // <- not bad usage
|
|
|
|
"}");
|
2012-05-14 18:34:39 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-11-23 10:24:29 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" z_stream strm;\n"
|
|
|
|
" char* buf = malloc(10);\n"
|
|
|
|
" strm.next_out = buf;\n"
|
|
|
|
" deflate(&strm, Z_FINISH);\n"
|
|
|
|
" memcpy(body, buf, 10);\n"
|
|
|
|
"}");
|
2013-11-23 10:24:29 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-23 19:38:39 +01:00
|
|
|
|
|
|
|
// #6451 - allocation in subscope
|
|
|
|
checkUninitVarB("struct StgStrm {\n"
|
|
|
|
" StgIo& rIo;\n"
|
|
|
|
" StgStrm(StgIo&);\n"
|
|
|
|
" virtual sal_Int32 Write();\n"
|
|
|
|
"};\n"
|
|
|
|
"void Tmp2Strm() {\n"
|
|
|
|
" StgStrm* pNewStrm;\n"
|
|
|
|
" if (someflag)\n"
|
|
|
|
" pNewStrm = new StgStrm(rIo);\n"
|
|
|
|
" else\n"
|
|
|
|
" pNewStrm = new StgStrm(rIo);\n"
|
|
|
|
" pNewStrm->Write();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVarB("struct StgStrm {\n"
|
|
|
|
" StgIo& rIo;\n"
|
|
|
|
" StgStrm(StgIo&);\n"
|
|
|
|
" virtual sal_Int32 Write();\n"
|
|
|
|
"};\n"
|
|
|
|
"void Tmp2Strm() {\n"
|
|
|
|
" StgStrm* pNewStrm;\n"
|
|
|
|
" if (someflag)\n"
|
|
|
|
" pNewStrm = new StgStrm(rIo);\n"
|
|
|
|
" pNewStrm->Write();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:10]: (error) Uninitialized variable: pNewStrm\n", errout.str());
|
|
|
|
|
|
|
|
// #6450 - calling a member function is allowed if memory was allocated by new
|
|
|
|
checkUninitVarB("struct EMFPFont {\n"
|
|
|
|
" bool family;\n"
|
|
|
|
" void Initialize();\n"
|
|
|
|
"};\n"
|
|
|
|
"void processObjectRecord() {\n"
|
|
|
|
" EMFPFont *font = new EMFPFont();\n"
|
|
|
|
" font->Initialize();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// class / struct..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_class() {
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("class Fred\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" int a() { return i; }\n"
|
|
|
|
"};");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" struct Relative {\n"
|
|
|
|
" Surface *surface;\n"
|
|
|
|
" void MoveTo(int x, int y) {\n"
|
|
|
|
" surface->MoveTo();\n"
|
|
|
|
" }\n"
|
|
|
|
" };\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" static const struct ab {\n"
|
|
|
|
" int a,b;\n"
|
|
|
|
" int get_a() { return a; }"
|
|
|
|
" } = { 0, 0 };\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" {\n"
|
|
|
|
" union ab {\n"
|
|
|
|
" int a,b;\n"
|
|
|
|
" }\n"
|
|
|
|
" i = 0;\n"
|
|
|
|
" }\n"
|
|
|
|
" return i;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-11-30 18:40:36 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int x) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" x = ab.x = 12;\n"
|
|
|
|
"}");
|
2010-11-30 18:40:36 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// enum..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_enum() {
|
2010-10-31 12:31:11 +01:00
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" enum AB { a, b };\n"
|
|
|
|
" AB ab;\n"
|
|
|
|
" if (ab);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: ab\n", errout.str());
|
|
|
|
}
|
|
|
|
|
|
|
|
// references..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_references() {
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int a;\n"
|
|
|
|
" int &b = a;\n"
|
|
|
|
" b = 0;\n"
|
|
|
|
" int x = a;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(struct blame_entry *ent)\n"
|
|
|
|
"{\n"
|
|
|
|
" struct origin *suspect = ent->suspect;\n"
|
|
|
|
" char hex[41];\n"
|
|
|
|
" strcpy(hex, sha1_to_hex(suspect->commit->object.sha1));\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" const std::string s(x());\n"
|
|
|
|
" strchr(s.c_str(), ',');\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_return() {
|
2012-06-23 16:27:57 +02:00
|
|
|
|
|
|
|
checkUninitVar("static int foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" return ret;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: ret\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("static int foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" return ret+5;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: ret\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static int foo() {\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" return ret = 5;\n"
|
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
{
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static int foo() {\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" return cin >> ret;\n"
|
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("static int foo() {\n"
|
|
|
|
" int ret;\n"
|
|
|
|
" return cin >> ret;\n"
|
|
|
|
"}\n", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:3]: (error) Uninitialized variable: ret\n", errout.str());
|
|
|
|
}
|
|
|
|
|
2015-01-22 06:37:09 +01:00
|
|
|
// Ticket #6341- False negative
|
|
|
|
{
|
|
|
|
checkUninitVarB("wchar_t f() { int i; return btowc(i); }");
|
|
|
|
ASSERT_EQUALS("[test.cpp:1]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVarB("wchar_t f(int i) { return btowc(i); }");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// Avoid a potential false positive (#6341)
|
|
|
|
checkUninitVarB(
|
|
|
|
"void setvalue(int &x) {\n"
|
|
|
|
" x = 0;\n"
|
|
|
|
" return 123;\n"
|
|
|
|
"}\n"
|
|
|
|
"int f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" return setvalue(x);\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-22 06:53:11 +01:00
|
|
|
}
|
2015-01-22 06:37:09 +01:00
|
|
|
|
2015-01-22 06:53:11 +01:00
|
|
|
// Ticket #5412 - False negative
|
|
|
|
{
|
|
|
|
checkUninitVarB("void f(bool b)\n"
|
|
|
|
"{\n"
|
|
|
|
" double f;\n"
|
|
|
|
" if (b) { }\n"
|
|
|
|
" else {\n"
|
|
|
|
" f = 0.0;\n"
|
|
|
|
" }\n"
|
|
|
|
" printf (\"%f\",f);\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) Uninitialized variable: f\n", errout.str());
|
|
|
|
|
|
|
|
// Check for potential FP
|
|
|
|
checkUninitVarB("void f(bool b)\n"
|
|
|
|
"{\n"
|
|
|
|
" double f;\n"
|
|
|
|
" if (b) { f = 1.0 }\n"
|
|
|
|
" else {\n"
|
|
|
|
" f = 0.0;\n"
|
|
|
|
" }\n"
|
|
|
|
" printf (\"%f\",f);\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-22 06:37:09 +01:00
|
|
|
}
|
|
|
|
|
2012-06-23 16:27:57 +02:00
|
|
|
// Ticket #2146 - False negative
|
|
|
|
checkUninitVar("int f(int x) {\n"
|
|
|
|
" int y;\n"
|
|
|
|
" return x ? 1 : y;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2014-06-10 19:30:13 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: y\n", errout.str());
|
2012-06-23 16:27:57 +02:00
|
|
|
|
|
|
|
// Ticket #3106 - False positive
|
|
|
|
{
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" return x(&i) ? i : 0;\n"
|
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("int f() {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" return x() ? i : 0;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-06-23 16:27:57 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
}
|
|
|
|
|
2014-04-10 06:40:53 +02:00
|
|
|
// Ticket #5660 - False positive
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
|
|
|
" int result;\n"
|
|
|
|
" int *res[] = {&result};\n"
|
|
|
|
" foo(res);\n"
|
|
|
|
" return result;\n"
|
|
|
|
"}");
|
2014-04-10 06:40:53 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-06-23 16:27:57 +02:00
|
|
|
}
|
|
|
|
|
2012-11-03 21:21:19 +01:00
|
|
|
// strncpy doesn't always null-terminate..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_strncpy() {
|
2010-10-31 12:31:11 +01:00
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char a[100];\n"
|
|
|
|
" strncpy(a, s, 20);\n"
|
|
|
|
" strncat(a, s, 20);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-03 21:21:19 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Dangerous usage of 'a' (strncpy doesn't always null-terminate it).\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char a[100];\n"
|
|
|
|
" strncpy(a, \"hello\", 3);\n"
|
|
|
|
" strncat(a, \"world\", 20);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-03 21:21:19 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Dangerous usage of 'a' (strncpy doesn't always null-terminate it).\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char a[100];\n"
|
|
|
|
" strncpy(a, \"hello\", sizeof(a));\n"
|
|
|
|
" strncat(a, \"world\", 20);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-10-29 19:11:42 +02:00
|
|
|
|
|
|
|
// #3245 - false positive
|
|
|
|
{
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" char a[100];\n"
|
|
|
|
" strncpy(a,p,10);\n"
|
|
|
|
" memcmp(a,q,10);\n"
|
|
|
|
"}");
|
2011-10-29 19:11:42 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" char a[100];\n"
|
|
|
|
" strncpy(a,p,10);\n"
|
|
|
|
" if (memcmp(a,q,10)==0);\n"
|
|
|
|
"}");
|
2011-10-29 19:11:42 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
}
|
2011-12-23 08:44:28 +01:00
|
|
|
|
|
|
|
// Using strncpy isn't necessarily dangerous usage
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(const char dev[], char *str) {\n"
|
|
|
|
" char buf[10];\n"
|
|
|
|
" strncpy(buf, dev, 10);\n"
|
|
|
|
" strncpy(str, buf, 10);\n"
|
|
|
|
"}");
|
2011-12-23 08:44:28 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-08-29 13:12:05 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" char dst[4];\n"
|
|
|
|
" const char* source = \"You\";\n"
|
|
|
|
" strncpy(dst, source, sizeof(dst));\n"
|
|
|
|
" char value = dst[2];\n"
|
|
|
|
"}");
|
2013-08-29 13:12:05 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
|
|
|
|
2011-09-05 19:42:48 +02:00
|
|
|
// initialization with memset (not 0-terminating string)..
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_memset() {
|
2011-09-05 19:42:48 +02:00
|
|
|
checkUninitVar("void f() {\n"
|
|
|
|
" char a[20];\n"
|
|
|
|
" memset(a, 'a', 20);\n"
|
|
|
|
" strcat(a, s);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-03 21:21:19 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Dangerous usage of 'a' (not null-terminated).\n", errout.str());
|
2011-09-05 19:42:48 +02:00
|
|
|
}
|
2010-10-31 12:31:11 +01:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_memset_nonchar() {
|
2013-02-10 13:36:40 +01:00
|
|
|
checkUninitVar("void f() {\n"
|
|
|
|
" int a[20];\n"
|
|
|
|
" memset(a, 1, 20);\n"
|
|
|
|
" a[0] |= 2;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-08-29 13:12:05 +02:00
|
|
|
ASSERT_EQUALS(errout.str(), "");
|
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_memset_char_access() {
|
2013-08-29 13:12:05 +02:00
|
|
|
checkUninitVar("void f() {\n"
|
|
|
|
" unsigned char c[10];\n"
|
|
|
|
" memset(c, 32, 10);\n"
|
|
|
|
" unsigned char value = c[3];\n"
|
|
|
|
"}");
|
2013-02-10 13:36:40 +01:00
|
|
|
ASSERT_EQUALS(errout.str(), "");
|
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
std::string analyseFunctions(const char code[]) {
|
2010-12-01 18:00:55 +01:00
|
|
|
// Clear the error buffer..
|
|
|
|
errout.str("");
|
|
|
|
|
2010-10-31 12:31:11 +01:00
|
|
|
// Tokenize..
|
2010-12-01 18:00:55 +01:00
|
|
|
Tokenizer tokenizer(&settings, this);
|
2010-10-31 12:31:11 +01:00
|
|
|
std::istringstream istr(code);
|
|
|
|
tokenizer.tokenize(istr, "test.cpp");
|
|
|
|
|
|
|
|
std::set<std::string> f;
|
|
|
|
const CheckUninitVar check((const Tokenizer *)0, (const Settings *)0, (ErrorLogger *)0);
|
2014-11-15 10:43:49 +01:00
|
|
|
check.analyseFunctions(&tokenizer, f);
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
std::string ret;
|
|
|
|
for (std::set<std::string>::const_iterator it = f.begin(); it != f.end(); ++it)
|
|
|
|
ret += (ret.empty() ? "" : " ") + *it;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_func() {
|
2010-10-31 12:31:11 +01:00
|
|
|
// function analysis..
|
|
|
|
ASSERT_EQUALS("foo", analyseFunctions("void foo(int x) { }"));
|
2010-11-12 17:06:14 +01:00
|
|
|
ASSERT_EQUALS("foo", analyseFunctions("void foo(int x);"));
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("foo", analyseFunctions("void foo(const int &x) { }"));
|
|
|
|
ASSERT_EQUALS("foo", analyseFunctions("void foo(int &x) { ++x; }"));
|
2012-09-05 19:46:44 +02:00
|
|
|
ASSERT_EQUALS("rename", analyseFunctions("int rename (const char* oldname, const char* newname);")); // Ticket #914
|
2010-11-12 17:14:37 +01:00
|
|
|
ASSERT_EQUALS("rename", analyseFunctions("int rename (const char oldname[], const char newname[]);"));
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", analyseFunctions("void foo(int &x) { x = 0; }"));
|
|
|
|
ASSERT_EQUALS("", analyseFunctions("void foo(s x) { }"));
|
2011-07-27 10:34:12 +02:00
|
|
|
// TODO: it's ok to pass a valid pointer to "foo". See #2775 and #2946
|
|
|
|
TODO_ASSERT_EQUALS("foo", "", analyseFunctions("void foo(Fred *fred) { fred->x = 0; }"));
|
|
|
|
ASSERT_EQUALS("", analyseFunctions("void foo(int *x) { x[0] = 0; }"));
|
2010-10-31 12:31:11 +01:00
|
|
|
|
|
|
|
// function calls..
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void assignOne(int &x)\n"
|
|
|
|
"{ x = 1; }\n"
|
|
|
|
"\n"
|
|
|
|
"int f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" assignOne(i);\n"
|
|
|
|
" return i;\n"
|
|
|
|
"};");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int (*assign)(int *p))\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" (*assign)(&i);\n"
|
|
|
|
" return i;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char s[10];\n"
|
|
|
|
" return bar(s);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" FILE *f;\n"
|
|
|
|
" fflush(f);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: f\n", errout.str());
|
|
|
|
|
2013-10-26 18:39:40 +02:00
|
|
|
checkUninitVar2("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" int i;\n"
|
|
|
|
" x(i+2);\n"
|
|
|
|
"}");
|
2010-11-13 15:10:17 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" char *p = malloc(10);\n"
|
|
|
|
" read(p + 1);\n"
|
|
|
|
" return p;\n"
|
|
|
|
"}");
|
2010-11-13 10:33:35 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f()\n"
|
|
|
|
"{\n"
|
|
|
|
" Abc *p;\n"
|
|
|
|
" int sz = sizeof(*p);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" Foo *p;\n"
|
|
|
|
" x = bar(sizeof(*p));\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" Foo *p;\n"
|
|
|
|
" x = bar(p->begin());\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
|
|
|
|
|
2013-10-26 18:39:40 +02:00
|
|
|
checkUninitVar2("int foo(int x) { return x; }\n"
|
|
|
|
"void f2()\n"
|
|
|
|
"{\n"
|
|
|
|
" int x;\n"
|
|
|
|
" foo(x);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar("void foo(const char *s)\n"
|
|
|
|
"{\n"
|
|
|
|
" char *p;\n"
|
|
|
|
" memcpy(p, s, 100);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo(const char *s)\n"
|
|
|
|
"{\n"
|
|
|
|
" char *p = malloc(100);\n"
|
|
|
|
" memcpy(p, s, 100);\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2010-11-12 17:38:25 +01:00
|
|
|
checkUninitVar("int calc(const int *p, int n);\n"
|
|
|
|
"void f() {\n"
|
|
|
|
" int x[10];\n"
|
|
|
|
" calc(x,10);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-01-30 12:54:19 +01:00
|
|
|
TODO_ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n",
|
|
|
|
"", errout.str());
|
2010-11-12 17:38:25 +01:00
|
|
|
|
2011-01-05 20:44:04 +01:00
|
|
|
// #2401 - unknown function/macro might init the variable
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" INIT(x);\n"
|
|
|
|
" return x;\n"
|
|
|
|
"}");
|
2011-01-05 20:44:04 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-10-30 17:22:30 +01:00
|
|
|
// #3222 - calling function through function pointer
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("char f() {\n"
|
|
|
|
" char buffer[100];\n"
|
|
|
|
" (foo.init)(buffer);\n"
|
|
|
|
" return buffer[0];\n"
|
|
|
|
"}");
|
2011-10-30 17:22:30 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #3586 - calling template function
|
|
|
|
" int i;\n"
|
|
|
|
" a::b<int>(i);\n"
|
|
|
|
"}");
|
2012-09-15 10:48:17 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void test() {\n"
|
|
|
|
" double d;\n"
|
|
|
|
" double x = dostuff<int>(d);\n"
|
|
|
|
" return x;\n"
|
|
|
|
"}");
|
2013-10-26 18:39:40 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("template <class T> double dostuff(int x, T &y);\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" double d;\n"
|
|
|
|
" a = dostuff<double>(0, d);\n"
|
|
|
|
"}");
|
2013-10-26 18:39:40 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2010-10-31 12:31:11 +01:00
|
|
|
// using uninitialized function pointer..
|
|
|
|
checkUninitVar("void foo()\n"
|
|
|
|
"{\n"
|
|
|
|
" void (*f)();\n"
|
|
|
|
" f();\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: f\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo() {\n"
|
2015-01-04 11:13:20 +01:00
|
|
|
" int f = 1 + f();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2010-10-31 12:31:11 +01:00
|
|
|
// calling noreturn function..
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo(int a) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (a==1)\n"
|
|
|
|
" g();\n" // might be a noreturn function
|
|
|
|
" else\n"
|
|
|
|
" x = 3;\n"
|
|
|
|
" return x;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int foo(int a) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (a==1)\n"
|
|
|
|
" g(1);\n" // might be a noreturn function
|
|
|
|
" else\n"
|
|
|
|
" x = 3;\n"
|
|
|
|
" return x;\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void (*init)(char *str);\n"
|
|
|
|
"\n"
|
|
|
|
"char x() {\n"
|
|
|
|
" char cmd[10];\n"
|
|
|
|
" init(cmd);\n"
|
|
|
|
" return cmd[0];\n"
|
|
|
|
"}");
|
2010-10-31 12:31:11 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-02-03 22:29:32 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("char fn(FILE *f) {\n"
|
|
|
|
" char buf[10];\n"
|
|
|
|
" fread(buf, 1, 10, f);\n"
|
|
|
|
"}");
|
2011-02-03 22:29:32 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-07-04 21:04:32 +02:00
|
|
|
|
|
|
|
// #2775 - uninitialized struct pointer in subfunction
|
2015-01-21 16:17:58 +01:00
|
|
|
checkUninitVar2("void a(struct Fred *fred) {\n"
|
|
|
|
" fred->x = 0;\n"
|
|
|
|
"}\n"
|
|
|
|
"\n"
|
|
|
|
"void b() {\n"
|
|
|
|
" struct Fred *p;\n"
|
|
|
|
" a(p);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:7]: (error) Uninitialized variable: p\n", errout.str());
|
2011-07-27 10:34:12 +02:00
|
|
|
|
|
|
|
// #2946 - FP array is initialized in subfunction
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a(char *buf) {\n"
|
2015-01-21 16:17:58 +01:00
|
|
|
" buf[0] = 0;\n"
|
|
|
|
"}\n"
|
|
|
|
"void b() {\n"
|
|
|
|
" char buf[10];\n"
|
|
|
|
" a(buf);\n"
|
|
|
|
" buf[1] = buf[0];\n"
|
|
|
|
"}");
|
2011-07-27 10:34:12 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-10-02 20:38:58 +02:00
|
|
|
|
|
|
|
// #3159 - initialization by function
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static int isnumber(const char *arg) {\n"
|
2015-01-21 16:17:58 +01:00
|
|
|
" char *p;\n"
|
|
|
|
" return strtod(arg, &p) != 0 || p != arg;\n"
|
|
|
|
"}");
|
2011-10-02 20:38:58 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:17:58 +01:00
|
|
|
checkUninitVar2("static int isnumber(const char *arg) {\n"
|
|
|
|
" char *p;\n"
|
|
|
|
" return strtod(&arg) != 0 || p != arg;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: p\n", errout.str());
|
2010-10-31 12:31:11 +01:00
|
|
|
}
|
2010-12-27 21:05:33 +01:00
|
|
|
|
2011-02-26 20:08:37 +01:00
|
|
|
// valid and invalid use of 'int a(int x) { return x + x; }'
|
2014-11-20 14:20:09 +01:00
|
|
|
void func_uninit_var() {
|
2013-03-20 15:36:16 +01:00
|
|
|
const std::string funca("int a(int x) { return x + x; }");
|
2011-02-26 20:08:37 +01:00
|
|
|
|
2013-10-26 18:39:40 +02:00
|
|
|
checkUninitVar2((funca +
|
|
|
|
"void b() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" a(x);\n"
|
|
|
|
"}").c_str());
|
2013-03-20 15:36:16 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
2011-02-26 20:08:37 +01:00
|
|
|
|
|
|
|
checkUninitVar((funca +
|
|
|
|
"void b() {\n"
|
|
|
|
" int *p;\n"
|
|
|
|
" a(*p);\n"
|
|
|
|
"}").c_str());
|
2013-03-20 15:36:16 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: p\n", errout.str());
|
2011-02-26 20:08:37 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-02-12 12:42:16 +01:00
|
|
|
// valid and invalid use of 'void a(int *p) { *p = 0; }'
|
2014-11-20 14:20:09 +01:00
|
|
|
void func_uninit_pointer() {
|
2013-03-20 15:36:16 +01:00
|
|
|
const std::string funca("void a(int *p) { *p = 0; }");
|
2011-02-12 12:42:16 +01:00
|
|
|
|
|
|
|
// ok - initialized pointer
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB((funca +
|
2015-01-21 16:17:58 +01:00
|
|
|
"void b() {\n"
|
|
|
|
" int buf[10];\n"
|
|
|
|
" a(buf);\n"
|
|
|
|
"}").c_str());
|
2011-02-12 12:42:16 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// not ok - uninitialized pointer
|
2013-10-26 18:39:40 +02:00
|
|
|
checkUninitVar2((funca +
|
|
|
|
"void b() {\n"
|
|
|
|
" int *p;\n"
|
|
|
|
" a(p);\n"
|
|
|
|
"}").c_str());
|
2013-03-20 15:36:16 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: p\n", errout.str());
|
2011-02-12 12:42:16 +01:00
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar_typeof() {
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 19:47:20 +01:00
|
|
|
" struct Fred *fred;\n"
|
|
|
|
" typeof(fred->x);\n"
|
|
|
|
"}");
|
2010-12-27 21:05:33 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-12-27 21:18:36 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2014-12-15 19:47:20 +01:00
|
|
|
" struct SData * s;\n"
|
|
|
|
" ab(typeof(s->status));\n"
|
|
|
|
"}");
|
2010-12-27 21:18:36 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-12-30 21:30:46 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" struct SData * s;\n"
|
|
|
|
" TYPEOF(s->status);\n"
|
|
|
|
"}");
|
|
|
|
TODO_ASSERT_EQUALS("", "[test.cpp:3]: (error) Uninitialized variable: s\n", errout.str());
|
2013-10-12 18:46:14 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
|
|
|
" #define w(x) ({ x z; (x*)z; })\n"
|
|
|
|
" int *n = w(typeof(*n));\n"
|
|
|
|
"}");
|
2013-10-12 18:46:14 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2010-12-27 21:05:33 +01:00
|
|
|
}
|
2011-12-13 21:57:27 +01:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar2() {
|
2011-12-14 06:00:17 +01:00
|
|
|
// using uninit var
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" x++;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2011-12-14 19:56:58 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" str[x] = 0;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2011-12-14 06:00:17 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" int y = x & 3;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2011-12-14 18:28:30 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" int y = 3 & x;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2013-06-27 16:53:15 +02:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" x = 3 + x;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2013-11-16 18:07:33 +01:00
|
|
|
checkUninitVar2("int f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" x = x;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2011-12-26 14:01:46 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" struct ABC *abc;\n"
|
|
|
|
" abc->a = 0;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: abc\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
2011-12-26 22:14:52 +01:00
|
|
|
" static int x;\n"
|
|
|
|
" return ++x;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
2012-06-26 18:28:41 +02:00
|
|
|
" extern int x;\n"
|
|
|
|
" return ++x;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #3926 - weird cast.
|
2012-07-03 18:52:23 +02:00
|
|
|
" int x;\n"
|
|
|
|
" *(((char *)&x) + 0) = 0;\n"
|
2015-01-21 16:45:15 +01:00
|
|
|
"}", "test.c");
|
2012-07-03 18:52:23 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #4737 - weird cast.
|
2013-05-01 13:52:28 +02:00
|
|
|
" int x;\n"
|
|
|
|
" do_something(&((char*)&x)[0], 1);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-12-13 20:10:22 +01:00
|
|
|
" int x;\n"
|
|
|
|
" char *p = (char*)&x + 1;\n"
|
2015-01-21 16:45:15 +01:00
|
|
|
"}", "test.cpp"); // verify=false (the cast is removed but we don't care)
|
2013-12-13 20:10:22 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-06-29 09:33:51 +02:00
|
|
|
" int i;\n"
|
|
|
|
" i=f(), i!=2;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-14 18:28:30 +01:00
|
|
|
// using uninit var in condition
|
2013-01-26 08:16:53 +01:00
|
|
|
checkUninitVar2("void f(void) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (x) { }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2011-12-14 18:28:30 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (1 == (3 & x)) { }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2012-01-02 11:25:13 +01:00
|
|
|
// ?:
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int *ptr) {\n"
|
2012-01-02 11:25:13 +01:00
|
|
|
" int a;\n"
|
|
|
|
" int *p = ptr ? ptr : &a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int a) {\n"
|
2013-11-17 12:42:53 +01:00
|
|
|
" int x;\n"
|
|
|
|
" if (a==3) { x=2; }\n"
|
|
|
|
" y = (a==3) ? x : a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int a) {\n"
|
2014-01-25 10:12:50 +01:00
|
|
|
" int result;\n"
|
|
|
|
" foo() ? result = 1 : result = 0;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-17 07:56:46 +01:00
|
|
|
// = { .. }
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
2011-12-17 07:56:46 +01:00
|
|
|
" int a;\n"
|
|
|
|
" int *p[] = { &a };\n"
|
|
|
|
" *p[0] = 0;\n"
|
|
|
|
" return a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-11-17 12:11:18 +01:00
|
|
|
// = ({ .. })
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x = ({ 1 + 2; });\n"
|
|
|
|
" int y = 1 + (x ? y : y);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: y\n", errout.str());
|
|
|
|
|
2011-12-15 16:55:55 +01:00
|
|
|
// >> => initialization / usage
|
|
|
|
{
|
|
|
|
const char code[] = "void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (i >> x) { }\n"
|
|
|
|
"}";
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB(code, "test.cpp");
|
2011-12-15 16:55:55 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2(code, "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
}
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-16 20:34:44 +01:00
|
|
|
" int i, i2;\n"
|
|
|
|
" strm >> i >> i2;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-16 20:34:44 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-26 17:52:32 +01:00
|
|
|
// unconditional initialization
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
2011-12-26 17:52:32 +01:00
|
|
|
" int ret;\n"
|
|
|
|
" if (a) { ret = 1; }\n"
|
|
|
|
" else { {} ret = 2; }\n"
|
|
|
|
" return ret;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-14 06:00:17 +01:00
|
|
|
// conditional initialization
|
2011-12-13 21:57:27 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (y == 1) { x = 1; }\n"
|
2013-04-17 21:06:19 +02:00
|
|
|
" else { if (y == 2) { x = 1; } }\n"
|
2011-12-13 21:57:27 +01:00
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-26 12:36:35 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (y == 1) { x = 1; }\n"
|
2013-04-17 21:06:19 +02:00
|
|
|
" else { if (y == 2) { x = 1; } }\n"
|
2011-12-26 12:36:35 +01:00
|
|
|
" if (y == 3) { }\n" // <- ignore condition
|
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-26 12:36:35 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: x\n", errout.str());
|
2011-12-13 21:57:27 +01:00
|
|
|
|
2011-12-14 17:17:24 +01:00
|
|
|
// initialization in condition
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-14 17:17:24 +01:00
|
|
|
" int a;\n"
|
|
|
|
" if (init(&a)) { }\n"
|
|
|
|
" a++;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-14 17:17:24 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-26 16:46:10 +01:00
|
|
|
// return, break, continue, goto
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-13 21:57:27 +01:00
|
|
|
" int x;\n"
|
|
|
|
" if (y == 1) { return; }\n"
|
|
|
|
" else { x = 1; }\n"
|
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-13 21:57:27 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2012-11-29 18:41:48 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" if (y == 1) { return; }\n"
|
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-29 18:41:48 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int x) {\n"
|
2012-12-25 10:37:21 +01:00
|
|
|
" int ret;\n"
|
|
|
|
" if (!x) {\n"
|
|
|
|
" ret = -123;\n"
|
|
|
|
" goto out1;\n"
|
|
|
|
" }\n"
|
|
|
|
" return 0;\n"
|
|
|
|
"out1:\n"
|
|
|
|
"out2:\n"
|
|
|
|
" return ret;\n"
|
2015-01-21 16:45:15 +01:00
|
|
|
"}", "test.c");
|
2012-12-25 10:37:21 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-26 16:46:10 +01:00
|
|
|
" int i;\n"
|
|
|
|
" if (x) {\n"
|
|
|
|
" i = 1;\n"
|
|
|
|
" } else {\n"
|
|
|
|
" goto out;\n"
|
|
|
|
" }\n"
|
|
|
|
" i++;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-27 08:18:05 +01:00
|
|
|
checkUninitVar2("int f() {\n"
|
|
|
|
" int i,x;\n"
|
|
|
|
" for (i=0;i<9;++i)\n"
|
|
|
|
" if (foo) break;\n"
|
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-29 18:41:48 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: x\n", errout.str());
|
2011-12-27 08:18:05 +01:00
|
|
|
|
2012-11-30 06:30:04 +01:00
|
|
|
checkUninitVar2("int f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" while (foo)\n"
|
|
|
|
" if (bar) break;\n"
|
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-11-30 06:30:04 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2013-12-24 07:39:15 +01:00
|
|
|
// try/catch : don't warn about exception variable
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-12-24 07:39:15 +01:00
|
|
|
" try {\n"
|
|
|
|
" } catch (CException* e) {\n"
|
|
|
|
" trace();\n"
|
|
|
|
" e->Delete();\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #5347
|
2014-01-14 06:24:09 +01:00
|
|
|
" try {\n"
|
|
|
|
" } catch (const char* e) {\n"
|
|
|
|
" A a = e;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-14 05:45:52 +01:00
|
|
|
// exit
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-13 21:57:27 +01:00
|
|
|
" int x;\n"
|
|
|
|
" if (y == 1) { exit(0); }\n"
|
|
|
|
" else { x = 1; }\n"
|
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-13 21:57:27 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-15 16:49:14 +01:00
|
|
|
|
|
|
|
// strange code.. don't crash (#3415)
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void foo() {\n"
|
2011-12-15 16:49:14 +01:00
|
|
|
" int i;\n"
|
|
|
|
" ({ if (0); });\n"
|
|
|
|
" for_each(i) { }\n"
|
2015-01-21 16:45:15 +01:00
|
|
|
"}", "test.c");
|
2011-12-15 16:49:14 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-15 18:15:58 +01:00
|
|
|
|
|
|
|
// if, if
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int a) {\n"
|
2011-12-15 18:15:58 +01:00
|
|
|
" int i;\n"
|
|
|
|
" if (a) i = 0;\n"
|
|
|
|
" if (a) i++;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-15 20:29:57 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-16 19:56:13 +01:00
|
|
|
" int a,b=0;\n"
|
|
|
|
" if (x) {\n"
|
|
|
|
" if (y) {\n"
|
|
|
|
" a = 0;\n"
|
|
|
|
" b = 1;\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
" if (b) a++;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-26 18:17:13 +01:00
|
|
|
" int a=0, b;\n"
|
|
|
|
" if (x) { }\n"
|
2013-04-17 21:06:19 +02:00
|
|
|
" else { if (y==2) { a=1; b=2; } }\n"
|
2011-12-26 18:17:13 +01:00
|
|
|
" if (a) { ++b; }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-26 18:17:13 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void f(int x, int y) {\n"
|
2011-12-26 18:32:42 +01:00
|
|
|
" int a;\n"
|
|
|
|
" if (x == 0) { a = y; }\n"
|
|
|
|
" if (x == 0 && (a == 1)) { }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-26 18:32:42 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void f() {\n"
|
2014-11-01 14:03:02 +01:00
|
|
|
" int a=0, b;\n"
|
|
|
|
" if (something) { a = dostuff(&b); }\n"
|
|
|
|
" if (!a || b) { }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-26 18:32:42 +01:00
|
|
|
checkUninitVar2("static void f(int x, int y) {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" if (x == 0 && (a == 1)) { }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-26 18:56:40 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
|
2011-12-26 18:32:42 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-27 13:16:16 +01:00
|
|
|
" int a;\n"
|
|
|
|
" if (x) { a = 0; }\n"
|
|
|
|
" if (x) { if (y) { a++; } }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-27 13:16:16 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-27 13:16:16 +01:00
|
|
|
" int a;\n"
|
|
|
|
" if (x) { a = 0; }\n"
|
|
|
|
" if (x) { if (y) { } else { a++; } }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2011-12-27 13:16:16 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n"
|
2013-01-25 18:20:57 +01:00
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" if (x) ab = getAB();\n"
|
|
|
|
" else ab.a = 0;\n"
|
|
|
|
" if (ab.a == 1) b = ab.b;\n"
|
|
|
|
"}", "test.c");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(void) {\n"
|
2013-01-28 18:08:20 +01:00
|
|
|
" int a;\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (x) { noreturn(); }\n"
|
|
|
|
" else { i = 0; }\n"
|
|
|
|
" if (i==1) { a = 0; }\n"
|
|
|
|
" else { a = 1; }\n"
|
|
|
|
" return a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int a) {\n" // #4560
|
2013-02-11 17:05:59 +01:00
|
|
|
" int x = 0, y;\n"
|
|
|
|
" if (a) x = 1;\n"
|
2013-02-11 18:39:03 +01:00
|
|
|
" else return 0;\n"
|
2013-02-11 17:05:59 +01:00
|
|
|
" if (x) y = 123;\n" // <- y is always initialized
|
2013-05-06 18:45:00 +02:00
|
|
|
" else {}\n"
|
|
|
|
" return y;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int a) {\n" // #4560
|
2013-05-06 18:45:00 +02:00
|
|
|
" int x = 1, y;\n"
|
|
|
|
" if (a) x = 0;\n"
|
|
|
|
" else return 0;\n"
|
|
|
|
" if (x) {}\n"
|
|
|
|
" else y = 123;\n" // <- y is always initialized
|
|
|
|
" return y;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static int x;" // #4773
|
2013-05-06 18:45:00 +02:00
|
|
|
"int f() {\n"
|
|
|
|
" int y;\n"
|
|
|
|
" if (x) g();\n"
|
|
|
|
" if (x) y = 123;\n"
|
|
|
|
" else y = 456;\n"
|
|
|
|
" return y;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static int x;" // #4773
|
2013-05-06 18:45:00 +02:00
|
|
|
"int f() {\n"
|
|
|
|
" int y;\n"
|
|
|
|
" if (!x) g();\n"
|
|
|
|
" if (x) y = 123;\n"
|
2013-02-11 17:05:59 +01:00
|
|
|
" else y = 456;\n"
|
|
|
|
" return y;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-02-11 17:05:59 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2011-12-15 20:29:57 +01:00
|
|
|
// asm
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-15 20:29:57 +01:00
|
|
|
" int x;\n"
|
|
|
|
" asm();\n"
|
|
|
|
" x++;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-17 09:51:45 +01:00
|
|
|
|
2011-12-27 17:03:48 +01:00
|
|
|
// sizeof / typeof / offsetof / etc
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-17 09:51:45 +01:00
|
|
|
" int i;\n"
|
|
|
|
" sizeof(i+1);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-17 16:08:55 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-17 16:08:55 +01:00
|
|
|
" int i;\n"
|
|
|
|
" if (100 == sizeof(i+1));\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-27 10:18:49 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-27 10:18:49 +01:00
|
|
|
" struct ABC *abc;\n"
|
|
|
|
" int i = ARRAY_SIZE(abc.a);"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-27 17:03:48 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2011-12-27 17:03:48 +01:00
|
|
|
" int *abc;\n"
|
|
|
|
" typeof(*abc);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-01-13 23:30:43 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2012-12-25 13:31:54 +01:00
|
|
|
" struct ABC *abc;\n"
|
|
|
|
" return do_something(typeof(*abc));\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-07-06 08:52:47 +02:00
|
|
|
" A *a;\n"
|
|
|
|
" a = malloc(sizeof(*a));\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2012-06-19 20:04:10 +02:00
|
|
|
// Ticket #3890 - False positive for std::map
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2012-06-19 20:04:10 +02:00
|
|
|
" std::map<int,bool> x;\n"
|
|
|
|
" return x;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-06-19 20:04:10 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2012-06-22 16:26:43 +02:00
|
|
|
// Ticket #3906 - False positive for std::vector pointer
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2012-06-22 16:26:43 +02:00
|
|
|
" std::vector<int> *x = NULL;\n"
|
|
|
|
" return x;\n"
|
2015-01-21 16:45:15 +01:00
|
|
|
"}", "test.cpp");
|
2012-06-22 16:26:43 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-12-28 12:32:15 +01:00
|
|
|
|
|
|
|
// &
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #4426 - address of uninitialized variable
|
2012-12-28 12:32:15 +01:00
|
|
|
" int a,b;\n"
|
|
|
|
" if (&a == &b);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-03-13 17:32:47 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #4439 - cast address of uninitialized variable
|
2013-03-13 17:32:47 +01:00
|
|
|
" int a;\n"
|
|
|
|
" x((A)(B)&a);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-04-09 17:02:11 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #4778 - cast address of uninitialized variable
|
2013-06-14 07:21:53 +02:00
|
|
|
" long a;\n"
|
|
|
|
" &a;\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n" // #4717 - ({})
|
2013-04-09 17:02:11 +02:00
|
|
|
" int a = ({ long b = (long)(123); 2 + b; });\n"
|
2015-01-21 16:45:15 +01:00
|
|
|
"}", "test.c");
|
2013-04-09 17:02:11 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2011-12-13 21:57:27 +01:00
|
|
|
}
|
2012-06-08 16:17:55 +02:00
|
|
|
|
|
|
|
// #3869 - reference variable
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar4() {
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2012-06-08 16:17:55 +02:00
|
|
|
" int buf[10];\n"
|
|
|
|
" int &x = buf[0];\n"
|
|
|
|
" buf[0] = 0;\n"
|
|
|
|
" x++;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
}
|
2012-06-13 19:09:51 +02:00
|
|
|
|
|
|
|
// #3861
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar5() {
|
2012-06-13 19:09:51 +02:00
|
|
|
// ensure there is no false positive
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2012-06-13 19:09:51 +02:00
|
|
|
" x<char> c;\n"
|
|
|
|
" c << 2345;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// ensure there is no false negative
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" char c;\n"
|
|
|
|
" char a = c << 2;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: c\n", errout.str());
|
2012-12-18 19:02:30 +01:00
|
|
|
|
|
|
|
// #4320
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2012-12-18 19:02:30 +01:00
|
|
|
" int a;\n"
|
|
|
|
" a << 1;\n" // there might be a operator<<
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-18 19:02:30 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-06-13 19:09:51 +02:00
|
|
|
}
|
2012-06-22 16:39:39 +02:00
|
|
|
|
|
|
|
// Handling of unknown types. Assume they are POD in C.
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar6() {
|
2012-06-22 16:39:39 +02:00
|
|
|
const char code[] = "void f() {\n"
|
|
|
|
" dfs a;\n"
|
|
|
|
" return a;\n"
|
|
|
|
"}";
|
|
|
|
|
|
|
|
// Assume dfs is a non POD type if file is C++
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB(code, "test.cpp");
|
2012-06-22 16:39:39 +02:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// Assume dfs is a POD type if file is C
|
|
|
|
checkUninitVar2(code, "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:3]: (error) Uninitialized variable: a\n", errout.str());
|
2012-12-21 18:50:38 +01:00
|
|
|
|
|
|
|
const char code2[] = "struct AB { int a,b; };\n"
|
|
|
|
"void f() {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" return ab;\n"
|
|
|
|
"}";
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB(code2, "test.cpp");
|
2012-12-21 18:50:38 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
checkUninitVar2(code2, "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:4]: (error) Uninitialized variable: ab\n", errout.str());
|
2012-06-22 16:39:39 +02:00
|
|
|
}
|
2012-12-20 19:45:30 +01:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar7() {
|
2014-07-06 14:48:24 +02:00
|
|
|
const char code[] = "void eDBauth_user() {\n"
|
2014-07-06 17:50:21 +02:00
|
|
|
" char *blid_cert;\n"
|
|
|
|
" if( ) {\n"
|
|
|
|
" blid_cert = ;\n"
|
|
|
|
" } \n"
|
|
|
|
"}\n";
|
2014-07-06 14:48:24 +02:00
|
|
|
|
|
|
|
// Assume dfs is a non POD type if file is C++
|
|
|
|
checkUninitVar2(code, "test.cpp");
|
2014-07-06 17:50:21 +02:00
|
|
|
}
|
2014-07-06 14:48:24 +02:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar8() {
|
2014-11-17 16:04:44 +01:00
|
|
|
const char code[] = "struct Fred {\n"
|
|
|
|
" void Sync(dsmp_t& type, int& len, int limit = 123);\n"
|
|
|
|
" void Sync(int& syncpos, dsmp_t& type, int& len, int limit = 123);\n"
|
|
|
|
" void FindSyncPoint();\n"
|
|
|
|
"};\n"
|
|
|
|
"void Fred::FindSyncPoint() {\n"
|
|
|
|
" dsmp_t type;\n"
|
|
|
|
" int syncpos, len;\n"
|
|
|
|
" Sync(syncpos, type, len);\n"
|
|
|
|
"}";
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB(code, "test.cpp");
|
2014-11-17 16:04:44 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
}
|
|
|
|
|
2015-01-19 06:38:54 +01:00
|
|
|
void uninitvar9() { // 6424
|
|
|
|
const char code[] = "namespace Ns { class C; }\n"
|
|
|
|
"void f1() { char *p; *p = 0; }\n"
|
|
|
|
"class Ns::C* p;\n"
|
|
|
|
"void f2() { char *p; *p = 0; }";
|
|
|
|
checkUninitVar2(code, "test.cpp");
|
|
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Uninitialized variable: p\n"
|
|
|
|
"[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
|
|
|
|
}
|
|
|
|
|
2015-01-22 13:51:43 +01:00
|
|
|
void uninitvar_unconditionalTry() {
|
|
|
|
// Unconditional scopes and try{} scopes
|
|
|
|
checkUninitVar2("int f() {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" {\n"
|
|
|
|
" return i;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("int f() {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" try {\n"
|
|
|
|
" return i;\n"
|
|
|
|
" } catch(...) {}\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
}
|
|
|
|
|
2015-01-30 19:16:25 +01:00
|
|
|
void uninitvar_funcptr() {
|
|
|
|
checkUninitVar2("void getLibraryContainer() {\n"
|
|
|
|
" Reference< XStorageBasedLibraryContainer >(*Factory)(const Reference< XComponentContext >&, const Reference< XStorageBasedDocument >&)\n"
|
|
|
|
" = &DocumentDialogLibraryContainer::create;\n"
|
|
|
|
" rxContainer.set((*Factory)(m_aContext, xDocument));\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void getLibraryContainer() {\n"
|
|
|
|
" void* x;\n"
|
|
|
|
" Reference< XStorageBasedLibraryContainer >(*Factory)(const Reference< XComponentContext >&, const Reference< XStorageBasedDocument >&)\n"
|
|
|
|
" = x;\n"
|
|
|
|
" rxContainer.set((*Factory)(m_aContext, xDocument));\n"
|
|
|
|
"}", "test.cpp", false);
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void getLibraryContainer() {\n"
|
|
|
|
" Reference< XStorageBasedLibraryContainer >(*Factory)(const Reference< XComponentContext >&, const Reference< XStorageBasedDocument >&);\n"
|
|
|
|
" rxContainer.set((*Factory)(m_aContext, xDocument));\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: Factory\n", errout.str());
|
|
|
|
}
|
2012-12-21 16:57:49 +01:00
|
|
|
// Handling of function calls
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar2_func() {
|
2012-12-21 19:32:56 +01:00
|
|
|
// non-pointer variable
|
2013-11-16 12:02:21 +01:00
|
|
|
checkUninitVar2("void a(char);\n" // value => error
|
|
|
|
"void b() {\n"
|
|
|
|
" char c;\n"
|
|
|
|
" a(c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
2012-12-21 19:32:56 +01:00
|
|
|
checkUninitVar2("void a(char c);\n" // value => error
|
2012-12-20 19:45:30 +01:00
|
|
|
"void b() {\n"
|
|
|
|
" char c;\n"
|
|
|
|
" a(c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
2012-12-21 19:32:56 +01:00
|
|
|
checkUninitVar2("void a(const char c);\n" // const value => error
|
2012-12-20 19:45:30 +01:00
|
|
|
"void b() {\n"
|
|
|
|
" char c;\n"
|
2012-12-21 19:32:56 +01:00
|
|
|
" a(c);\n"
|
2012-12-20 19:45:30 +01:00
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a(char *c);\n" // address => no error
|
2012-12-20 19:45:30 +01:00
|
|
|
"void b() {\n"
|
|
|
|
" char c;\n"
|
|
|
|
" a(&c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-12-25 14:05:29 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a(pstr s);\n" // address => no error
|
2012-12-25 14:05:29 +01:00
|
|
|
"void b() {\n"
|
|
|
|
" char c;\n"
|
|
|
|
" a(&c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-12-20 19:45:30 +01:00
|
|
|
|
2012-12-21 19:32:56 +01:00
|
|
|
checkUninitVar2("void a(const char *c);\n" // const address => error
|
2012-12-20 19:45:30 +01:00
|
|
|
"void b() {\n"
|
2012-12-21 19:32:56 +01:00
|
|
|
" char c;\n"
|
|
|
|
" a(&c);\n"
|
2012-12-20 19:45:30 +01:00
|
|
|
"}");
|
2012-12-21 19:32:56 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
2012-12-20 19:45:30 +01:00
|
|
|
|
2012-12-21 19:32:56 +01:00
|
|
|
// pointer variable
|
|
|
|
checkUninitVar2("void a(char c);\n" // value => error
|
2012-12-20 19:45:30 +01:00
|
|
|
"void b() {\n"
|
2012-12-21 19:32:56 +01:00
|
|
|
" char *c;\n"
|
|
|
|
" a(*c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
2012-12-21 16:57:49 +01:00
|
|
|
|
2012-12-21 19:32:56 +01:00
|
|
|
checkUninitVar2("void a(const char c);\n" // const value => error
|
2012-12-21 17:04:15 +01:00
|
|
|
"void b() {\n"
|
2012-12-21 19:32:56 +01:00
|
|
|
" char c;\n"
|
|
|
|
" a(*c);\n"
|
2012-12-21 17:04:15 +01:00
|
|
|
"}");
|
2012-12-21 19:32:56 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
|
|
|
|
|
|
|
checkUninitVar2("void a(char *c);\n" // address => error
|
|
|
|
"void b() {\n"
|
|
|
|
" char *c;\n"
|
|
|
|
" a(c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
2013-12-10 18:36:16 +01:00
|
|
|
checkUninitVar2("typedef struct { int a; int b; } AB;\n"
|
|
|
|
"void a(AB *ab);\n"
|
|
|
|
"void b() {\n"
|
|
|
|
" AB *ab;\n"
|
|
|
|
" a(ab);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: ab\n", errout.str());
|
|
|
|
|
2012-12-21 19:32:56 +01:00
|
|
|
checkUninitVar2("void a(const char *c);\n" // const address => error
|
|
|
|
"void b() {\n"
|
|
|
|
" char *c;\n"
|
|
|
|
" a(c);\n"
|
2013-11-16 12:02:21 +01:00
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void a(const char c[]);\n" // const address => error
|
|
|
|
"void b() {\n"
|
|
|
|
" char *c;\n"
|
|
|
|
" a(c);\n"
|
2012-12-21 19:32:56 +01:00
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: c\n", errout.str());
|
2012-12-21 17:04:15 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a(char **c);\n" // address of pointer => no error
|
2012-12-21 16:57:49 +01:00
|
|
|
"void b() {\n"
|
2012-12-21 19:32:56 +01:00
|
|
|
" char *c;\n"
|
2012-12-25 13:58:15 +01:00
|
|
|
" a(&c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a(char *c);\n" // address of pointer (suspicious cast to pointer) => no error
|
2012-12-25 13:58:15 +01:00
|
|
|
"void b() {\n"
|
|
|
|
" char *c;\n"
|
2012-12-21 19:32:56 +01:00
|
|
|
" a(&c);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void a(const char **c);\n" // const address of pointer => no error
|
2012-12-21 19:32:56 +01:00
|
|
|
"void b() {\n"
|
|
|
|
" const char *c;\n"
|
|
|
|
" a(&c);\n"
|
2012-12-21 16:57:49 +01:00
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-04-10 20:04:32 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct ABC { int a; };\n" // struct initialization
|
2013-04-10 20:04:32 +02:00
|
|
|
"void clear(struct ABC &abc);\n"
|
|
|
|
"int f() {\n"
|
|
|
|
" struct ABC abc;\n"
|
|
|
|
" clear(abc);\n"
|
|
|
|
" return abc.a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-22 21:22:02 +01:00
|
|
|
|
|
|
|
checkUninitVarB("void write_packet() {\n"
|
|
|
|
" time_t now0;\n"
|
|
|
|
" time(&now0);\n"
|
|
|
|
"}", "test.c");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVarB("void write_packet() {\n"
|
|
|
|
" time_t* now0;\n"
|
|
|
|
" time(now0);\n"
|
|
|
|
"}", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:3]: (error) Uninitialized variable: now0\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVarB("void write_packet() {\n"
|
|
|
|
" char now0;\n"
|
|
|
|
" strcmp(&now0, sth);\n"
|
|
|
|
"}", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:3]: (error) Uninitialized variable: now0\n", errout.str());
|
2012-12-20 19:45:30 +01:00
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar2_value() {
|
2012-12-24 19:11:13 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (x) {\n"
|
|
|
|
" int y = -ENOMEM;\n" // assume constant ENOMEM is nonzero since it's negated
|
|
|
|
" if (y != 0) return;\n"
|
|
|
|
" i++;\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-24 19:11:13 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int i, y;\n"
|
|
|
|
" if (x) {\n"
|
|
|
|
" y = -ENOMEM;\n" // assume constant ENOMEM is nonzero since it's negated
|
|
|
|
" if (y != 0) return;\n"
|
|
|
|
" i++;\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-24 19:11:13 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2012-12-24 19:11:13 +01:00
|
|
|
" int i, y;\n"
|
|
|
|
" if (x) y = -ENOMEM;\n" // assume constant ENOMEM is nonzero since it's negated
|
|
|
|
" else y = get_value(i);\n"
|
|
|
|
" if (y != 0) return;\n" // <- condition is always true if i is uninitialized
|
|
|
|
" i++;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-24 19:11:13 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f(int x) {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (!x) i = 0;\n"
|
|
|
|
" if (!x || i>0) {}\n" // <- error
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2014-11-01 14:03:02 +01:00
|
|
|
TODO_ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: i\n", "", errout.str());
|
2012-12-24 19:11:13 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int x) {\n"
|
2012-12-24 19:11:13 +01:00
|
|
|
" int i;\n"
|
|
|
|
" if (x) i = 0;\n"
|
|
|
|
" if (!x || i>0) {}\n" // <- no error
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-24 19:11:13 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f(int x) {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (!x) { }\n"
|
|
|
|
" else i = 0;\n"
|
|
|
|
" if (x || i>0) {}\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-24 19:11:13 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: i\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int x) {\n"
|
2012-12-24 19:11:13 +01:00
|
|
|
" int i;\n"
|
|
|
|
" if (x) { }\n"
|
|
|
|
" else i = 0;\n"
|
|
|
|
" if (x || i>0) {}\n" // <- no error
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-24 19:11:13 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2012-12-27 18:45:00 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(int x) {\n"
|
2013-04-08 19:34:39 +02:00
|
|
|
" int y;\n"
|
|
|
|
" if (x) y = do_something();\n"
|
|
|
|
" if (!x) return 0;\n"
|
|
|
|
" return y;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-07-10 16:44:35 +02:00
|
|
|
checkUninitVar2("int f(int x) {\n" // FP with ?:
|
|
|
|
" int a;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" a = p;\n"
|
|
|
|
" return x ? 2*a : 0;\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// TODO: False negative when "?:" is used
|
|
|
|
// This should probably be fixed in the tokenizer by changing
|
|
|
|
// "return x?y:z;" to "if(x)return y;return z;"
|
|
|
|
checkUninitVar2("int f(int x) {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" if (x)\n"
|
|
|
|
" a = p;\n"
|
|
|
|
" return y ? 2*a : 3*a;\n"
|
|
|
|
"}\n");
|
|
|
|
TODO_ASSERT_EQUALS("error", "", errout.str());
|
|
|
|
|
2012-12-27 18:45:00 +01:00
|
|
|
// Unknown => bail out..
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int x) {\n"
|
2012-12-27 18:45:00 +01:00
|
|
|
" int i;\n"
|
|
|
|
" if (a(x)) i = 0;\n"
|
|
|
|
" if (b(x)) return;\n"
|
|
|
|
" i++;\n" // <- no error if b(x) is always true when a(x) is false
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2012-12-27 18:45:00 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-05-29 16:16:12 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int x) {\n"
|
2013-05-29 16:16:12 +02:00
|
|
|
" int i;\n"
|
|
|
|
" if (x) i = 0;\n"
|
|
|
|
" while (condition) {\n"
|
|
|
|
" if (x) i++;\n" // <- no error
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-06-02 18:26:03 +02:00
|
|
|
|
|
|
|
checkUninitVar2("void f(int x) {\n"
|
|
|
|
" int i;\n"
|
|
|
|
" if (x) i = 0;\n"
|
|
|
|
" while (condition) {\n"
|
|
|
|
" i++;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
TODO_ASSERT_EQUALS("error", "", errout.str());
|
2012-12-24 19:11:13 +01:00
|
|
|
}
|
2013-01-16 20:28:29 +01:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar2_structmembers() { // struct members
|
2013-02-15 18:13:47 +01:00
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" int a = ab.a;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-02-15 18:13:47 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
|
|
|
|
2015-01-21 12:20:03 +01:00
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" AB ab;\n"
|
|
|
|
" int a = ab.a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
|
|
|
|
2013-06-27 16:53:15 +02:00
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = ab.a + 1;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
|
|
|
|
2013-01-16 20:28:29 +01:00
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void do_something(const struct AB ab);\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = 0;\n"
|
|
|
|
" do_something(ab);\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-17 23:55:13 +01:00
|
|
|
ASSERT_EQUALS("[test.c:6]: (error) Uninitialized struct member: ab.b\n", errout.str());
|
2013-01-16 20:28:29 +01:00
|
|
|
|
2013-01-19 10:09:58 +01:00
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" int a = ab.a;\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-19 10:09:58 +01:00
|
|
|
ASSERT_EQUALS("[test.c:4]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" buf[ab.a] = 0;\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-19 10:09:58 +01:00
|
|
|
ASSERT_EQUALS("[test.c:4]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
|
|
|
|
2014-05-10 19:56:44 +02:00
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = 1;\n"
|
|
|
|
" x = ab;\n"
|
|
|
|
"}\n", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:5]: (error) Uninitialized struct member: ab.b\n", errout.str());
|
|
|
|
|
2014-05-10 20:20:55 +02:00
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = 1;\n"
|
|
|
|
" x = *(&ab);\n"
|
|
|
|
"}\n", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:5]: (error) Uninitialized struct member: ab.b\n", errout.str());
|
|
|
|
|
2014-09-15 15:58:21 +02:00
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" static void f() { }\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; element->f();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" static void f() { }\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; (*element).f();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" static int v;\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; element->v;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" static int v;\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; (*element).v;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" void f() { }\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; element->f();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" void f() { }\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; (*element).f();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" int v;\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; element->v;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("class Element {\n"
|
|
|
|
" int v;\n"
|
|
|
|
"};\n"
|
|
|
|
"void test() {\n"
|
|
|
|
" Element *element; (*element).v;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized variable: element\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n" // pass struct member by address
|
2013-01-20 13:12:40 +01:00
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" assign(&ab.a, 0);\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-20 13:12:40 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n"
|
2013-01-16 20:28:29 +01:00
|
|
|
"void do_something(const struct AB ab);\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = 0;\n"
|
|
|
|
" ab.b = 0;\n"
|
|
|
|
" do_something(ab);\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-16 20:28:29 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-01-17 17:01:04 +01:00
|
|
|
|
2014-09-15 15:58:21 +02:00
|
|
|
{
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(void) {\n"
|
2014-09-15 15:58:21 +02:00
|
|
|
" struct AB ab;\n"
|
|
|
|
" strcpy(ab.a, STR);\n"
|
|
|
|
"}\n", "test.c");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" strcpy(x, ab.a);\n"
|
|
|
|
"}\n", "test.c");
|
|
|
|
TODO_ASSERT_EQUALS("error", "", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("struct AB { int a; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" dosomething(ab.a);\n"
|
|
|
|
"}\n", "test.c");
|
|
|
|
TODO_ASSERT_EQUALS("error","", errout.str());
|
|
|
|
}
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n"
|
2013-01-17 17:01:04 +01:00
|
|
|
"void do_something(const struct AB ab);\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab = getAB();\n"
|
|
|
|
" do_something(ab);\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-17 17:01:04 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-01-17 21:04:22 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; struct { int b; int c; } s; };\n"
|
2013-01-17 21:04:22 +01:00
|
|
|
"void do_something(const struct AB ab);\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = 1;\n"
|
|
|
|
" ab.s.b = 2;\n"
|
|
|
|
" ab.s.c = 3;\n"
|
|
|
|
" do_something(ab);\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-17 21:04:22 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct conf {\n"
|
2013-01-17 21:04:22 +01:00
|
|
|
" char x;\n"
|
|
|
|
"};\n"
|
|
|
|
"\n"
|
|
|
|
"void do_something(struct conf ant_conf);\n"
|
|
|
|
"\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct conf c;\n"
|
|
|
|
" initdata(&c);\n"
|
|
|
|
" do_something(c);\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-17 21:04:22 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-01-18 21:26:28 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct PIXEL {\n"
|
2013-09-30 06:35:31 +02:00
|
|
|
" union {\n"
|
|
|
|
" struct { unsigned char red,green,blue,alpha; };\n"
|
|
|
|
" unsigned int color;\n"
|
|
|
|
" };\n"
|
|
|
|
"};\n"
|
|
|
|
"\n"
|
|
|
|
"unsigned char f() {\n"
|
|
|
|
" struct PIXEL p1;\n"
|
|
|
|
" p1.color = 255;\n"
|
|
|
|
" return p1.red;\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n"
|
2013-12-04 20:32:20 +01:00
|
|
|
"int f() {\n"
|
|
|
|
" struct AB *ab;\n"
|
|
|
|
" for (i = 1; i < 10; i++) {\n"
|
|
|
|
" if (condition && (ab = getab()) != NULL) {\n"
|
|
|
|
" a = ab->a;\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n"
|
2013-12-04 20:32:20 +01:00
|
|
|
"int f(int x) {\n"
|
|
|
|
" struct AB *ab;\n"
|
|
|
|
" if (x == 0) {\n"
|
|
|
|
" ab = getab();\n"
|
|
|
|
" }\n"
|
|
|
|
" if (x == 0 && (ab != NULL || ab->a == 0)) { }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct A { int *x; };\n" // declarationId is 0 for "delete"
|
2013-12-04 20:32:20 +01:00
|
|
|
"void foo(void *info, void*p);\n"
|
|
|
|
"void bar(void) {\n"
|
|
|
|
" struct A *delete = 0;\n"
|
|
|
|
" foo( info, NULL );\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2014-03-20 06:48:17 +01:00
|
|
|
|
|
|
|
checkUninitVar2("struct ABC { int a; int b; int c; };\n"
|
|
|
|
"void foo(int x, const struct ABC *abc);\n"
|
|
|
|
"void bar(void) {\n"
|
|
|
|
" struct ABC abc;\n"
|
|
|
|
" foo(123, &abc);\n"
|
|
|
|
" return abc.b;\n"
|
|
|
|
"}");
|
2014-12-15 15:41:03 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized struct member: abc.a\n"
|
|
|
|
"[test.cpp:5]: (error) Uninitialized struct member: abc.b\n"
|
|
|
|
"[test.cpp:6]: (error) Uninitialized struct member: abc.b\n"
|
|
|
|
"[test.cpp:5]: (error) Uninitialized struct member: abc.c\n", errout.str());
|
2013-12-04 20:32:20 +01:00
|
|
|
|
2013-01-19 10:09:58 +01:00
|
|
|
// return
|
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = 0;\n"
|
|
|
|
" return ab.b;\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-20 17:54:32 +01:00
|
|
|
ASSERT_EQUALS("[test.c:5]: (error) Uninitialized struct member: ab.b\n", errout.str());
|
2013-01-19 10:09:58 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n"
|
2013-01-19 10:09:58 +01:00
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" ab.a = 0;\n"
|
|
|
|
" return ab.a;\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-19 10:09:58 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-01-18 21:26:28 +01:00
|
|
|
// checkIfForWhileHead
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct FRED {\n"
|
2013-01-18 21:26:28 +01:00
|
|
|
" int a;\n"
|
|
|
|
" int b;\n"
|
|
|
|
"};\n"
|
|
|
|
"\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct FRED fred;\n"
|
|
|
|
" fred.a = do_something();\n"
|
|
|
|
" if (fred.a == 0) { }\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-18 21:26:28 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("struct FRED {\n"
|
|
|
|
" int a;\n"
|
|
|
|
" int b;\n"
|
|
|
|
"};\n"
|
|
|
|
"\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct FRED fred;\n"
|
|
|
|
" fred.a = do_something();\n"
|
|
|
|
" if (fred.b == 0) { }\n"
|
2013-02-15 18:13:47 +01:00
|
|
|
"}\n", "test.c");
|
2013-01-19 12:48:56 +01:00
|
|
|
ASSERT_EQUALS("[test.c:9]: (error) Uninitialized struct member: fred.b\n", errout.str());
|
2013-02-05 17:01:46 +01:00
|
|
|
|
2013-05-02 20:34:15 +02:00
|
|
|
checkUninitVar2("struct Fred { int a; };\n"
|
|
|
|
"void f() {\n"
|
|
|
|
" struct Fred fred;\n"
|
|
|
|
" if (fred.a==1) {}\n"
|
|
|
|
"}", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:4]: (error) Uninitialized struct member: fred.a\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct S { int n; int m; };\n"
|
2013-02-05 17:01:46 +01:00
|
|
|
"void f(void) {\n"
|
|
|
|
" struct S s;\n"
|
|
|
|
" for (s.n = 0; s.n <= 10; s.n++) { }\n"
|
|
|
|
"}", "test.c");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-02-23 15:57:58 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void test2() {\n"
|
2013-02-23 15:57:58 +01:00
|
|
|
" struct { char type; } s_d;\n"
|
|
|
|
" if (foo(&s_d.type)){}\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-03-20 16:59:45 +01:00
|
|
|
|
2013-04-10 20:46:44 +02:00
|
|
|
// for
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; };\n"
|
2013-04-10 20:46:44 +02:00
|
|
|
"void f() {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" while (x) { clear(ab); z = ab.a; }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-06-25 18:40:41 +02:00
|
|
|
checkUninitVar2("struct AB { int a; };\n"
|
|
|
|
"void f() {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" while (x) { ab.a = ab.a + 1; }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
|
|
|
|
2013-03-20 16:59:45 +01:00
|
|
|
// address of member
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a[10]; int b; };\n"
|
2013-03-20 16:59:45 +01:00
|
|
|
"void f() {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" int *p = ab.a;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2014-10-16 21:57:43 +02:00
|
|
|
|
|
|
|
// non static data-member initialization
|
|
|
|
checkUninitVar2("struct AB { int a=1; int b; };\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" int a = ab.a;\n"
|
|
|
|
" int b = ab.b;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized struct member: ab.b\n", errout.str());
|
2015-01-21 13:10:38 +01:00
|
|
|
|
|
|
|
// STL class member
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct A {\n"
|
2015-01-21 13:10:38 +01:00
|
|
|
" std::map<int, int> m;\n"
|
|
|
|
" int i;\n"
|
|
|
|
"};\n"
|
|
|
|
"void foo() {\n"
|
|
|
|
" A a;\n"
|
|
|
|
" x = a.m;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// Unknown type (C++)
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct A {\n"
|
2015-01-21 13:10:38 +01:00
|
|
|
" C m;\n"
|
|
|
|
" int i;\n"
|
|
|
|
"};\n"
|
|
|
|
"void foo() {\n"
|
|
|
|
" A a;\n"
|
|
|
|
" x = a.m;\n"
|
|
|
|
"}", "test.cpp");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// Unknown type (C)
|
|
|
|
checkUninitVar2("struct A {\n"
|
|
|
|
" C m;\n"
|
|
|
|
" int i;\n"
|
|
|
|
"};\n"
|
|
|
|
"void foo() {\n"
|
|
|
|
" A a;\n"
|
|
|
|
" x = a.m;\n"
|
|
|
|
"}", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:7]: (error) Uninitialized struct member: a.m\n", errout.str());
|
|
|
|
|
|
|
|
// Type with constructor
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("class C { C(); }\n"
|
2015-01-21 13:10:38 +01:00
|
|
|
"struct A {\n"
|
|
|
|
" C m;\n"
|
|
|
|
" int i;\n"
|
|
|
|
"};\n"
|
|
|
|
"void foo() {\n"
|
|
|
|
" A a;\n"
|
|
|
|
" x = a.m;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-01-16 20:28:29 +01:00
|
|
|
}
|
2013-01-20 18:40:24 +01:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar2_while() {
|
2013-01-24 19:41:15 +01:00
|
|
|
// for, while
|
2013-02-12 15:59:23 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" while (a) {\n"
|
|
|
|
" x = x + 1;\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-06-25 18:40:41 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" do {\n"
|
|
|
|
" x = x + 1;\n"
|
|
|
|
" } while (a);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
|
2013-02-12 15:59:23 +01:00
|
|
|
|
2013-12-23 12:27:00 +01:00
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" for (int x = x; x < 10; x++) {}\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" for (Element *ptr3 = ptr3->Next(); ptr3; ptr3 = ptr3->Next()) {}\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Uninitialized variable: ptr3\n", errout.str());
|
2014-09-12 08:19:00 +02:00
|
|
|
|
2013-07-28 12:41:38 +02:00
|
|
|
checkUninitVar2("void f() {\n" // #4911 - bad simplification => don't crash
|
|
|
|
" int a;\n"
|
2014-03-23 10:59:41 +01:00
|
|
|
" do { a=do_something() } while (a);\n"
|
2013-11-06 17:53:09 +01:00
|
|
|
"}\n", "test.cpp", /*verify=*/true, /*debugwarnings=*/true);
|
2014-03-23 10:59:41 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (debug) ValueFlow bailout: variable a stopping on }\n", errout.str());
|
2013-07-28 12:41:38 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-06-27 18:28:00 +02:00
|
|
|
" int x;\n"
|
|
|
|
" while (a) {\n"
|
|
|
|
" init(&x);\n"
|
|
|
|
" x++;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-01-24 19:41:15 +01:00
|
|
|
" int x;\n"
|
|
|
|
" while (a) {\n"
|
|
|
|
" if (b) x++;\n"
|
|
|
|
" else x = 0;\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-24 19:41:15 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-01-24 19:41:15 +01:00
|
|
|
" int x;\n"
|
|
|
|
" for (int i = 0; i < 10; i += x) {\n"
|
|
|
|
" x = y;\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-24 19:41:15 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("void f() {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" for (int i = 0; i < 10; i += x) { }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-24 19:41:15 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f() {\n"
|
2013-01-24 19:41:15 +01:00
|
|
|
" int i;\n"
|
|
|
|
" for (i=0;i<9;++i)\n"
|
2013-04-17 21:06:19 +02:00
|
|
|
" if (foo()) return i;\n"
|
|
|
|
" return 9;\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-24 19:41:15 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-12-13 13:27:01 +01:00
|
|
|
" int i;\n"
|
|
|
|
" do {} while (!getvalue(&i));\n"
|
|
|
|
" i++;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-01-24 19:41:15 +01:00
|
|
|
checkUninitVar2(">{ x while (y) z int = }"); // #4175 : don't crash
|
|
|
|
|
2013-01-20 18:40:24 +01:00
|
|
|
checkUninitVar2("int f(void) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" while (a()) {\n" // <- condition must always be true or there will be problem
|
|
|
|
" if (b()) {\n"
|
|
|
|
" x = 1;\n"
|
|
|
|
" break;"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
" return x;\n"
|
2013-09-23 06:07:01 +02:00
|
|
|
"}\n");
|
2013-01-20 18:40:24 +01:00
|
|
|
TODO_ASSERT_EQUALS("error", "", errout.str());
|
2013-01-24 19:41:15 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("int f(void) {\n"
|
2013-09-23 06:07:01 +02:00
|
|
|
" int x;\n"
|
|
|
|
" while (a()) {\n"
|
|
|
|
" if (b() && (x=1)) {\n"
|
|
|
|
" return x;\n"
|
|
|
|
" }\n"
|
|
|
|
" }\n"
|
|
|
|
" return 0;\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-01-24 19:41:15 +01:00
|
|
|
checkUninitVar2("void f(void) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" for (;;) {\n"
|
|
|
|
" int a = x+1;\n"
|
|
|
|
" do_something(a);\n"
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-24 19:41:15 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("struct AB {int a; int b;};\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" struct AB ab;\n"
|
|
|
|
" while (true) {\n"
|
|
|
|
" int a = 1+ab.a;\n"
|
|
|
|
" do_something(a);\n"
|
|
|
|
" }\n"
|
|
|
|
"}\n", "test.c");
|
|
|
|
ASSERT_EQUALS("[test.c:5]: (error) Uninitialized variable: ab\n"
|
|
|
|
"[test.c:5]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
2013-02-11 18:31:14 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(int i) {\n" // #4569 fp
|
2013-02-11 18:31:14 +01:00
|
|
|
" float *buffer;\n"
|
|
|
|
" if(i>10) buffer = f;\n"
|
|
|
|
" if(i>10) {\n"
|
|
|
|
" for (int i=0;i<10;i++)\n"
|
|
|
|
" buffer[i] = 0;\n" // <- fp
|
|
|
|
" }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-02-11 18:31:14 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-02-12 15:59:23 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(){\n" // #4519 - fp: inline assembler in loop
|
2013-02-12 15:59:23 +01:00
|
|
|
" int x;\n"
|
|
|
|
" for (int i = 0; i < 10; i++) {\n"
|
|
|
|
" asm(\"foo\");\n"
|
|
|
|
" if (x & 0xf1) { }\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-03-22 08:10:46 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("static void f(void) {\n"
|
2013-03-22 08:10:46 +01:00
|
|
|
" struct ABC *abc;\n"
|
|
|
|
" for (i = 0; i < 10; i++)\n"
|
|
|
|
" x += sizeof(*abc);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-06-26 17:02:57 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(void) {\n" // #4879
|
2013-06-26 17:02:57 +02:00
|
|
|
" int i;\n"
|
|
|
|
" while (x) {\n"
|
|
|
|
" for (i = 0; i < 5; i++)\n"
|
|
|
|
" a[i] = b[i];\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2014-04-10 15:59:37 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(void) {\n" // #5658
|
2014-04-10 15:59:37 +02:00
|
|
|
" struct Foo *foo;\n"
|
|
|
|
" while (true) {\n"
|
|
|
|
" foo = malloc(sizeof(*foo));\n"
|
|
|
|
" foo->x = 0;\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2014-04-21 10:32:29 +02:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f(void) {\n"
|
2014-04-21 10:32:29 +02:00
|
|
|
" int i;\n"
|
|
|
|
" while (x) {\n"
|
|
|
|
" for (i=0,y=i;;){}\n"
|
|
|
|
" }\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-01-20 18:40:24 +01:00
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar2_4494() {
|
2013-01-22 06:55:25 +01:00
|
|
|
checkUninitVar2("namespace N1 {\n"
|
|
|
|
" class Fred {\n"
|
|
|
|
" public:\n"
|
|
|
|
" static void f1(char *p) { *p = 0; }\n"
|
|
|
|
" };\n"
|
|
|
|
" void fa(void) { char *p; Fred::f1(p); }\n"
|
|
|
|
" void fb(void) { char *p; Fred::f2(p); }\n"
|
|
|
|
" void fc(void) { char *p; ::N1::Fred::f1(p); }\n"
|
|
|
|
" void fd(void) { char *p; ::N1::Fred::f2(p); }\n"
|
|
|
|
"}\n"
|
|
|
|
"namespace N2 {\n"
|
|
|
|
" static void f1(char *p) { *p = 0; }\n"
|
|
|
|
" void fa(void) { char *p; f1(p); }\n"
|
|
|
|
" void fb(void) { char *p; f2(p); }\n"
|
|
|
|
" void fc(void) { char *p; N1::Fred::f1(p); }\n"
|
|
|
|
" void fd(void) { char *p; N1::Fred::f2(p); }\n"
|
|
|
|
" void fe(void) { char *p; ::N1::Fred::f1(p); }\n"
|
|
|
|
" void ff(void) { char *p; ::N1::Fred::f2(p); }\n"
|
|
|
|
" void fg(void) { char *p; Foo::f1(p); }\n"
|
|
|
|
" void fh(void) { char *p; Foo::f2(p); }\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-22 06:55:25 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Uninitialized variable: p\n"
|
|
|
|
"[test.cpp:8]: (error) Uninitialized variable: p\n"
|
|
|
|
"[test.cpp:13]: (error) Uninitialized variable: p\n"
|
|
|
|
"[test.cpp:15]: (error) Uninitialized variable: p\n"
|
|
|
|
"[test.cpp:17]: (error) Uninitialized variable: p\n", errout.str());
|
2013-01-23 16:53:55 +01:00
|
|
|
|
|
|
|
checkUninitVar2("class Fred {\n"
|
|
|
|
"public:\n"
|
|
|
|
" void f1(char *p) { *p = 0; }\n"
|
|
|
|
"};\n"
|
|
|
|
"Fred fred;\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" char *p;\n"
|
|
|
|
" fred.f1(p);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-23 16:53:55 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:8]: (error) Uninitialized variable: p\n", errout.str());
|
2013-01-25 06:49:04 +01:00
|
|
|
|
|
|
|
checkUninitVar2("class Fred {\n"
|
|
|
|
"public:\n"
|
|
|
|
" class Wilma {\n"
|
|
|
|
" public:\n"
|
|
|
|
" class Barney {\n"
|
|
|
|
" public:\n"
|
|
|
|
" class Betty {\n"
|
|
|
|
" public:\n"
|
|
|
|
" void f1(char *p) { *p = 0; }\n"
|
|
|
|
" };\n"
|
|
|
|
" Betty betty;\n"
|
|
|
|
" };\n"
|
|
|
|
" Barney barney;\n"
|
|
|
|
" };\n"
|
|
|
|
" Wilma wilma;\n"
|
|
|
|
"};\n"
|
|
|
|
"Fred fred;\n"
|
|
|
|
"void f(void) {\n"
|
|
|
|
" char *p;\n"
|
|
|
|
" fred.wilma.barney.betty.f1(p);\n"
|
2013-03-20 15:36:16 +01:00
|
|
|
"}");
|
2013-01-25 06:49:04 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:20]: (error) Uninitialized variable: p\n", errout.str());
|
2013-01-22 06:55:25 +01:00
|
|
|
}
|
2013-11-06 17:53:09 +01:00
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void uninitvar2_malloc() {
|
2013-12-04 20:32:20 +01:00
|
|
|
checkUninitVar2("int f() {\n"
|
|
|
|
" int *p = malloc(40);\n"
|
|
|
|
" return *p;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Memory is allocated but not initialized: p\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("int f() {\n"
|
|
|
|
" int *p = malloc(40);\n"
|
|
|
|
" var = *p;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Memory is allocated but not initialized: p\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"int f() {\n"
|
|
|
|
" struct AB *ab = malloc(sizeof(struct AB));\n"
|
|
|
|
" return ab->a;\n"
|
|
|
|
"}");
|
2014-09-14 10:29:12 +02:00
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: ab\n"
|
|
|
|
"[test.cpp:4]: (error) Uninitialized struct member: ab.a\n",
|
|
|
|
errout.str());
|
2013-12-09 15:58:42 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct t_udf_file { int dir_left; };\n"
|
2013-12-12 09:17:41 +01:00
|
|
|
"\n"
|
|
|
|
"void f() {\n"
|
|
|
|
" struct t_udf_file *newf;\n"
|
|
|
|
" newf = malloc(sizeof(*newf));\n"
|
|
|
|
" if (!newf) return 0;\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-12-12 11:44:07 +01:00
|
|
|
" char *s = malloc(100);\n"
|
|
|
|
" if (s != NULL) { }\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-12-12 15:33:31 +01:00
|
|
|
" char *s = malloc(100);\n"
|
|
|
|
" *s = x;\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-12-24 12:48:17 +01:00
|
|
|
" char *p = malloc(100);\n"
|
|
|
|
" p || assert_failed();\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void f() {\n"
|
2013-12-25 14:00:27 +01:00
|
|
|
" char *p = malloc(100);\n"
|
|
|
|
" x = p;\n"
|
|
|
|
"}\n");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-12-09 15:58:42 +01:00
|
|
|
// function parameter (treat it as initialized until malloc is used)
|
|
|
|
checkUninitVar2("int f(int *p) {\n"
|
|
|
|
" if (*p == 1) {}\n" // no error
|
|
|
|
" p = malloc(256);\n"
|
|
|
|
" return *p;\n" // error
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:4]: (error) Memory is allocated but not initialized: p\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVar2("struct AB { int a; int b; };\n"
|
|
|
|
"int f(struct AB *ab) {\n"
|
|
|
|
" if (ab->a == 1) {}\n" // no error
|
|
|
|
" ab = malloc(sizeof(struct AB));\n"
|
|
|
|
" return ab->a;\n" // error
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:5]: (error) Uninitialized struct member: ab.a\n", errout.str());
|
2013-12-11 05:54:42 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("struct AB { int a; int b; };\n"
|
2013-12-11 05:54:42 +01:00
|
|
|
"void do_something(struct AB *ab);\n" // unknown function
|
|
|
|
"int f() {\n"
|
|
|
|
" struct AB *ab = malloc(sizeof(struct AB));\n"
|
|
|
|
" do_something(ab);\n"
|
|
|
|
"}");
|
2013-12-12 08:44:00 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2013-12-12 09:17:41 +01:00
|
|
|
// analysis failed. varid 0.
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void *vlc_custom_create (vlc_object_t *parent, size_t length, const char *typename) {\n"
|
2013-12-12 08:44:00 +01:00
|
|
|
" assert (length >= sizeof (vlc_object_t));\n"
|
|
|
|
"}\n");
|
2013-12-11 05:54:42 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
2013-12-04 20:32:20 +01:00
|
|
|
}
|
|
|
|
|
2014-11-20 14:20:09 +01:00
|
|
|
void syntax_error() { // Ticket #5073
|
2013-11-06 17:53:09 +01:00
|
|
|
// Nominal mode => No output
|
|
|
|
checkUninitVar2("struct flex_array {};\n"
|
|
|
|
"struct cgroup_taskset {};\n"
|
|
|
|
"void cgroup_attach_task() {\n"
|
|
|
|
" struct flex_array *group;\n"
|
|
|
|
" struct cgroup_taskset tset = { };\n"
|
|
|
|
" do { } while_each_thread(leader, tsk);\n"
|
|
|
|
"}", "test.cpp", /*verify=*/true, /*debugwarnings=*/false);
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
// --debug-warnings mode => Debug warning
|
|
|
|
checkUninitVar2("struct flex_array {};\n"
|
|
|
|
"struct cgroup_taskset {};\n"
|
|
|
|
"void cgroup_attach_task() {\n"
|
|
|
|
" struct flex_array *group;\n"
|
|
|
|
" struct cgroup_taskset tset = { };\n"
|
|
|
|
" do { } while_each_thread(leader, tsk);\n"
|
|
|
|
"}", "test.cpp", /*verify=*/true, /*debugwarnings=*/true);
|
|
|
|
ASSERT_EQUALS("[test.cpp:6]: (debug) assertion failed '} while ('\n", errout.str());
|
|
|
|
}
|
2014-03-19 21:08:48 +01:00
|
|
|
|
2014-12-15 10:05:44 +01:00
|
|
|
void uninitvar_posix_write() { // #6325
|
|
|
|
// Load posix library file
|
|
|
|
LOAD_LIB_2(settings.library, "posix.cfg");
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// check the first parameter of write
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checkUninitVar("void uninitvar(char *buf)\n"
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"{\n"
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" int fd;\n"
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|
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" write(fd, buf, sizeof(buf));\n"
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"}");
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ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: fd\n", errout.str());
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|
2015-01-21 16:45:15 +01:00
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checkUninitVarB("void no_uninitvar(int fd, char *buf)\n"
|
2014-12-15 19:47:20 +01:00
|
|
|
"{\n"
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|
|
" write(fd, buf, 8);\n"
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"}");
|
2014-12-15 10:05:44 +01:00
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ASSERT_EQUALS("", errout.str());
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// check the second parameter of the posix function write
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|
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checkUninitVar("void uninitvar() {\n"
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|
" char *buf;\n"
|
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|
|
" write(STDOUT_FILENO, buf, sizeof(buf));\n"
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|
|
"}");
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|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: buf\n", errout.str());
|
|
|
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|
|
|
checkUninitVar("void uninitvar() {\n"
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|
|
|
" char buf[2];\n"
|
|
|
|
" write(STDOUT_FILENO, buf, 2);\n"
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|
|
"}");
|
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|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: buf\n", errout.str());
|
|
|
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|
|
|
// avoid false positives
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void no_uninitvar(char *buf) {\n"
|
2014-12-15 19:47:20 +01:00
|
|
|
" write(STDOUT_FILENO, buf, 8);\n"
|
|
|
|
"}");
|
2014-12-15 10:05:44 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void no_uninitvar() {\n"
|
2014-12-15 19:47:20 +01:00
|
|
|
" char buf[1] = {'c'};\n"
|
|
|
|
" write(STDOUT_FILENO, &buf, 1);\n"
|
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|
|
"}");
|
2014-12-15 10:05:44 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
|
|
|
|
// check the third parameter of the posix function write
|
2014-12-15 19:47:20 +01:00
|
|
|
checkUninitVar2("void uninitvar(char *buf) {\n"
|
|
|
|
" int nbytes;\n"
|
|
|
|
" write(STDOUT_FILENO, buf, nbytes);\n"
|
|
|
|
"}");
|
2015-01-21 22:02:25 +01:00
|
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: nbytes\n", errout.str());
|
2014-12-15 10:05:44 +01:00
|
|
|
|
2015-01-21 16:45:15 +01:00
|
|
|
checkUninitVarB("void no_uninitvar(char *buf, int nbytes)\n"
|
2014-12-15 19:47:20 +01:00
|
|
|
"{\n"
|
|
|
|
" write(STDOUT_FILENO, buf, nbytes);\n"
|
|
|
|
"}");
|
2014-12-15 10:05:44 +01:00
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
}
|
2015-01-21 16:26:27 +01:00
|
|
|
|
|
|
|
void checkDeadPointer(const char code[]) {
|
|
|
|
// Clear the error buffer..
|
|
|
|
errout.str("");
|
|
|
|
|
|
|
|
// Tokenize..
|
|
|
|
Tokenizer tokenizer(&settings, this);
|
|
|
|
std::istringstream istr(code);
|
|
|
|
tokenizer.tokenize(istr, "test.cpp");
|
|
|
|
tokenizer.simplifyTokenList2();
|
|
|
|
|
|
|
|
// Check code..
|
|
|
|
CheckUninitVar check(&tokenizer, &settings, this);
|
|
|
|
check.deadPointer();
|
|
|
|
}
|
|
|
|
|
|
|
|
void deadPointer() {
|
|
|
|
checkDeadPointer("void f() {\n"
|
|
|
|
" int *p = p1;\n"
|
|
|
|
" if (cond) {\n"
|
|
|
|
" int x;\n"
|
|
|
|
" p = &x;\n"
|
|
|
|
" }\n"
|
|
|
|
" *p = 0;\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:7]: (error) Dead pointer usage. Pointer 'p' is dead if it has been assigned '&x' at line 5.\n", errout.str());
|
|
|
|
|
|
|
|
// FP: don't warn in subfunction
|
|
|
|
checkDeadPointer("void f(struct KEY *key) {\n"
|
|
|
|
" key->x = 0;\n"
|
|
|
|
"}\n"
|
|
|
|
"\n"
|
|
|
|
"int main() {\n"
|
|
|
|
" struct KEY *tmp = 0;\n"
|
|
|
|
" struct KEY k;\n"
|
|
|
|
"\n"
|
|
|
|
" if (condition) {\n"
|
|
|
|
" tmp = &k;\n"
|
|
|
|
" } else {\n"
|
|
|
|
" }\n"
|
|
|
|
" f(tmp);\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
2015-01-30 19:29:37 +01:00
|
|
|
|
|
|
|
// Don't warn about references (#6399)
|
|
|
|
checkDeadPointer("void f() {\n"
|
|
|
|
" wxAuiToolBarItem* former_hover = NULL;\n"
|
|
|
|
" for (i = 0, count = m_items.GetCount(); i < count; ++i) {\n"
|
|
|
|
" wxAuiToolBarItem& item = m_items.Item(i);\n"
|
|
|
|
" former_hover = &item;\n"
|
|
|
|
" }\n"
|
|
|
|
" if (former_hover != pitem)\n"
|
|
|
|
" dosth();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
|
|
checkDeadPointer("void f() {\n"
|
|
|
|
" wxAuiToolBarItem* former_hover = NULL;\n"
|
|
|
|
" for (i = 0, count = m_items.GetCount(); i < count; ++i) {\n"
|
|
|
|
" wxAuiToolBarItem item = m_items.Item(i);\n"
|
|
|
|
" former_hover = &item;\n"
|
|
|
|
" }\n"
|
|
|
|
" if (former_hover != pitem)\n"
|
|
|
|
" dosth();\n"
|
|
|
|
"}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:7]: (error) Dead pointer usage. Pointer 'former_hover' is dead if it has been assigned '&item' at line 5.\n", errout.str());
|
2015-01-21 16:26:27 +01:00
|
|
|
}
|
2015-01-23 17:29:18 +01:00
|
|
|
|
|
|
|
void uninitvar_posix_types() {
|
|
|
|
checkUninitVarB("blkcnt_t* f() {blkcnt_t *b; return b;}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:1]: (error) Uninitialized variable: b\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVarB("blkcnt_t f() {blkcnt_t b; return b;}");
|
|
|
|
ASSERT_EQUALS("[test.cpp:1]: (error) Uninitialized variable: b\n", errout.str());
|
2015-01-26 08:35:22 +01:00
|
|
|
|
|
|
|
// dirent
|
|
|
|
checkUninitVarB("char f() { dirent d; return d.d_name[0]; }");
|
|
|
|
ASSERT_EQUALS("[test.cpp:1]: (error) Uninitialized variable: d\n", errout.str());
|
|
|
|
|
|
|
|
checkUninitVarB("ino_t f2() { dirent d; return d.d_ino; }");
|
|
|
|
ASSERT_EQUALS("[test.cpp:1]: (error) Uninitialized variable: d\n", errout.str());
|
2015-01-23 17:29:18 +01:00
|
|
|
}
|
2010-10-31 12:31:11 +01:00
|
|
|
};
|
|
|
|
|
|
|
|
REGISTER_TEST(TestUninitVar)
|