Added testio.cpp (I forgot to add it in previous commit)
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PKEuS
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aebedfb123
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829a52dc51
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/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2012 Daniel Marjamäki and Cppcheck team.
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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 "checkio.h"
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#include "testsuite.h"
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#include "tokenize.h"
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#include <sstream>
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extern std::ostringstream errout;
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class TestIO : public TestFixture {
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public:
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TestIO() : TestFixture("TestIO")
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{ }
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private:
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void run() {
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TEST_CASE(coutCerrMisusage);
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TEST_CASE(fflushOnInputStreamTest);
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TEST_CASE(testScanf1); // Scanf without field limiters
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TEST_CASE(testScanf2);
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TEST_CASE(testScanf3);
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TEST_CASE(testScanf4);
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TEST_CASE(testScanfArgument);
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TEST_CASE(testPrintfArgument);
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}
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void check(const char code[]) {
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// Clear the error buffer..
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errout.str("");
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Settings settings;
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settings.addEnabled("style");
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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, "test.cpp");
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// Check..
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CheckIO checkIO(&tokenizer, &settings, this);
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checkIO.checkWrongPrintfScanfArguments();
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// Simplify token list..
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tokenizer.simplifyTokenList();
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checkIO.checkCoutCerrMisusage();
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checkIO.checkFflushOnInputStream();
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checkIO.invalidScanf();
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}
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void coutCerrMisusage() {
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check(
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"void foo() {\n"
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" std::cout << std::cout;\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (error) Invalid usage of output stream: '<< std::cout'.\n", errout.str());
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check(
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"void foo() {\n"
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" std::cout << \"xyz\" << std::cout;\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (error) Invalid usage of output stream: '<< std::cout'.\n", errout.str());
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check(
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"void foo(int i) {\n"
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" std::cout << i << std::cerr;\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (error) Invalid usage of output stream: '<< std::cerr'.\n", errout.str());
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check(
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"void foo() {\n"
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" std::cout << \"xyz\";\n"
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" std::cout << \"xyz\";\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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check(
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"void foo() {\n"
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" std::cout << std::cout.good();\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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check(
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"void foo() {\n"
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" MACRO(std::cout <<, << std::cout)\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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}
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void fflushOnInputStreamTest() {
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check("void foo()\n"
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"{\n"
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" fflush(stdin);\n"
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"}\n");
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ASSERT_EQUALS("[test.cpp:3]: (error) fflush() called on input stream \"stdin\" may result in undefined behaviour\n", errout.str());
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check("void foo()\n"
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"{\n"
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" fflush(stdout);\n"
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"}\n");
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ASSERT_EQUALS("", errout.str());
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}
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void testScanf1() {
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check("#include <stdio.h>\n"
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"int main(int argc, char **argv)\n"
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"{\n"
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" int a, b;\n"
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" FILE *file = fopen(\"test\", \"r\");\n"
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" b = fscanf(file, \"aa %ds\", &a);\n"
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" c = scanf(\"aa %ds\", &a);\n"
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" b = fscanf(file, \"aa%%ds\", &a);\n"
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" fclose(file);\n"
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" return b;\n"
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"}");
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ASSERT_EQUALS("[test.cpp:8]: (warning) fscanf format string has 0 parameters but 1 are given\n"
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"[test.cpp:6]: (warning) scanf without field width limits can crash with huge input data\n"
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"[test.cpp:7]: (warning) scanf without field width limits can crash with huge input data\n", errout.str());
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}
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void testScanf2() {
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check("#include <stdio.h>\n"
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"int main(int argc, char **argv)\n"
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"{\n"
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" int a, b;\n"
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" FILE *file = fopen(\"test\", \"r\");\n"
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" b = fscanf(file, \"aa%%%ds\", &a);\n"
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" c = scanf(\"aa %%%ds\", &a);\n"
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" b = fscanf(file, \"aa%%ds\", &a);\n"
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" fclose(file);\n"
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" return b;\n"
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"}");
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ASSERT_EQUALS("[test.cpp:8]: (warning) fscanf format string has 0 parameters but 1 are given\n"
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"[test.cpp:6]: (warning) scanf without field width limits can crash with huge input data\n"
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"[test.cpp:7]: (warning) scanf without field width limits can crash with huge input data\n", errout.str());
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}
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void testScanf3() {
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check("#include <stdio.h>\n"
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"int main(int argc, char **argv)\n"
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"{\n"
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" char a[32];\n"
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" int b, c;\n"
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" FILE *file = fopen(\"test\", \"r\");\n"
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" c = fscanf(file, \"%[^ ] %d\n\", a, &b);\n"
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" fclose(file);\n"
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" return c;\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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check("#include <stdio.h>\n"
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"int main(int argc, char **argv)\n"
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"{\n"
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" char a[32];\n"
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" int b;\n"
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" FILE *file = fopen(\"test\", \"r\");\n"
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" b = fscanf(file, \"%[^ \n\", a);\n"
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" fclose(file);\n"
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" return b;\n"
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"}");
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ASSERT_EQUALS("[test.cpp:7]: (warning) fscanf format string has 0 parameters but 1 are given\n", errout.str());
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}
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void testScanf4() {
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check("void f() {\n"
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" char c;\n"
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" scanf(\"%c\", &c);\n"
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"}");
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ASSERT_EQUALS("", errout.str());
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}
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void testScanfArgument() {
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check("void foo() {\n"
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" scanf(\"%1d\", &foo);\n"
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" sscanf(bar, \"%1d\", &foo);\n"
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" scanf(\"%1u%1u\", &foo, bar());\n"
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" scanf(\"%*1x %1x %29s\", &count, KeyName);\n" // #3373
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" fscanf(f, \"%7ms\", &ref);\n" // #3461
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" sscanf(ip_port, \"%*[^:]:%d\", &port);\n" // #3468
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"}");
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ASSERT_EQUALS("", errout.str());
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check("void foo() {\n"
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" scanf(\"\", &foo);\n"
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" scanf(\"%1d\", &foo, &bar);\n"
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" fscanf(bar, \"%1d\", &foo, &bar);\n"
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" scanf(\"%*1x %1x %29s\", &count, KeyName, foo);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (warning) scanf format string has 0 parameters but 1 are given\n"
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"[test.cpp:3]: (warning) scanf format string has 1 parameters but 2 are given\n"
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"[test.cpp:4]: (warning) fscanf format string has 1 parameters but 2 are given\n"
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"[test.cpp:5]: (warning) scanf format string has 2 parameters but 3 are given\n", errout.str());
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check("void foo() {\n"
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" scanf(\"%1d\");\n"
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" scanf(\"%1u%1u\", bar());\n"
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" sscanf(bar, \"%1d%1d\", &foo);\n"
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" scanf(\"%*1x %1x %29s\", &count);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (error) scanf format string has 1 parameters but only 0 are given\n"
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"[test.cpp:3]: (error) scanf format string has 2 parameters but only 1 are given\n"
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"[test.cpp:4]: (error) sscanf format string has 2 parameters but only 1 are given\n"
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"[test.cpp:5]: (error) scanf format string has 2 parameters but only 1 are given\n", errout.str());
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}
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void testPrintfArgument() {
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check("void foo() {\n"
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" printf(\"%u\");\n"
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" printf(\"%u%s\", 123);\n"
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" printf(\"%u%s%d\", 0, bar());\n"
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" printf(\"%u%%%s%d\", 0, bar());\n"
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" printf(\"%udfd%%dfa%s%d\", 0, bar());\n"
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" fprintf(stderr,\"%u%s\");\n"
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" snprintf(str,10,\"%u%s\");\n"
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" sprintf(string1, \"%-*.*s\", 32, string2);\n" // #3364
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" snprintf(a, 9, \"%s%d\", \"11223344\");\n" // #3655
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (error) printf format string has 1 parameters but only 0 are given\n"
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"[test.cpp:3]: (error) printf format string has 2 parameters but only 1 are given\n"
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"[test.cpp:4]: (error) printf format string has 3 parameters but only 2 are given\n"
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"[test.cpp:5]: (error) printf format string has 3 parameters but only 2 are given\n"
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"[test.cpp:6]: (error) printf format string has 3 parameters but only 2 are given\n"
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"[test.cpp:7]: (error) fprintf format string has 2 parameters but only 0 are given\n"
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"[test.cpp:8]: (error) snprintf format string has 2 parameters but only 0 are given\n"
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"[test.cpp:9]: (error) sprintf format string has 3 parameters but only 2 are given\n"
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"[test.cpp:10]: (error) snprintf format string has 2 parameters but only 1 are given\n", errout.str());
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check("void foo(char *str) {\n"
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" printf(\"\", 0);\n"
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" printf(\"%u\", 123, bar());\n"
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" printf(\"%u%s\", 0, bar(), 43123);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (warning) printf format string has 0 parameters but 1 are given\n"
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"[test.cpp:3]: (warning) printf format string has 1 parameters but 2 are given\n"
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"[test.cpp:4]: (warning) printf format string has 2 parameters but 3 are given\n", errout.str());
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check("void foo(char *str) {\n"
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" printf(\"%u\", 0);\n"
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" printf(\"%u%s\", 123, bar());\n"
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" printf(\"%u%s%d\", 0, bar(), 43123);\n"
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" printf(\"%u%%%s%d\", 0, bar(), 43123);\n"
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" printf(\"%udfd%%dfa%s%d\", 0, bar(), 43123);\n"
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" printf(\"%\"PRId64\"\n\", 123);\n"
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" fprintf(stderr,\"%\"PRId64\"\n\", 123);\n"
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" snprintf(str,10,\"%\"PRId64\"\n\", 123);\n"
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" fprintf(stderr, \"error: %m\n\");\n" // #3339
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" printf(\"string: %.*s\n\", len, string);\n" // #3311
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" fprintf(stderr, \"%*cText.\n\", indent, ' ');\n" // #3313
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" sprintf(string1, \"%*\", 32);\n" // #3364
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"}");
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ASSERT_EQUALS("", errout.str());
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check("void foo(char* s, const char* s2, std::string s3, int i) {\n"
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" printf(\"%s%s\", s, s2);\n"
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" printf(\"%s\", i);\n"
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" printf(\"%i%s\", i, i);\n"
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" printf(\"%s\", s3);\n"
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" printf(\"%s\", \"s4\");\n"
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" printf(\"%u\", s);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:3]: (warning) %s in format string (no. 1) requires a char* given in the argument list\n"
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"[test.cpp:4]: (warning) %s in format string (no. 2) requires a char* given in the argument list\n"
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"[test.cpp:5]: (warning) %s in format string (no. 1) requires a char* given in the argument list\n", errout.str());
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check("void foo(const int* cpi, const int ci, int i, int* pi, std::string s) {\n"
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" printf(\"%n\", cpi);\n"
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" printf(\"%n\", ci);\n"
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" printf(\"%n\", i);\n"
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" printf(\"%n\", pi);\n"
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" printf(\"%n\", s);\n"
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" printf(\"%n\", \"s4\");\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (warning) %n in format string (no. 1) requires a pointer to an non-const integer given in the argument list\n"
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"[test.cpp:3]: (warning) %n in format string (no. 1) requires a pointer to an non-const integer given in the argument list\n"
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"[test.cpp:4]: (warning) %n in format string (no. 1) requires a pointer to an non-const integer given in the argument list\n"
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"[test.cpp:6]: (warning) %n in format string (no. 1) requires a pointer to an non-const integer given in the argument list\n"
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"[test.cpp:7]: (warning) %n in format string (no. 1) requires a pointer to an non-const integer given in the argument list\n", errout.str());
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check("class foo {};\n"
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"void foo(const int* cpi, foo f, bar b, bar* bp, double d) {\n"
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" printf(\"%i\", f);\n"
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" printf(\"%c\", \"s4\");\n"
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" printf(\"%o\", d);\n"
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" printf(\"%i\", cpi);\n"
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" printf(\"%u\", b);\n"
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" printf(\"%u\", bp);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:3]: (warning) %i in format string (no. 1) requires an integer given in the argument list\n"
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"[test.cpp:4]: (warning) %c in format string (no. 1) requires an integer given in the argument list\n"
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"[test.cpp:5]: (warning) %o in format string (no. 1) requires an integer given in the argument list\n", errout.str());
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check("class foo {};\n"
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"void foo(const int* cpi, foo f, bar b, bar* bp, char c) {\n"
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" printf(\"%p\", f);\n"
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" printf(\"%p\", c);\n"
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" printf(\"%p\", bp);\n"
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" printf(\"%p\", cpi);\n"
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" printf(\"%p\", b);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:3]: (warning) %p in format string (no. 1) requires an integer or pointer given in the argument list\n"
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"[test.cpp:4]: (warning) %p in format string (no. 1) requires an integer or pointer given in the argument list\n", errout.str());
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check("class foo {};\n"
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"void foo(const int* cpi, foo f, bar b, bar* bp, double d) {\n"
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" printf(\"%e\", f);\n"
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" printf(\"%E\", \"s4\");\n"
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" printf(\"%f\", cpi);\n"
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" printf(\"%G\", bp);\n"
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" printf(\"%f\", d);\n"
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" printf(\"%f\", b);\n"
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" printf(\"%f\", (float)cpi);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:3]: (warning) %e in format string (no. 1) requires a floating point number given in the argument list\n"
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"[test.cpp:4]: (warning) %E in format string (no. 1) requires a floating point number given in the argument list\n"
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"[test.cpp:5]: (warning) %f in format string (no. 1) requires a floating point number given in the argument list\n"
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"[test.cpp:6]: (warning) %G in format string (no. 1) requires a floating point number given in the argument list\n", errout.str());
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check("class foo;\n"
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"void foo(foo f) {\n"
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" printf(\"%u\", f);\n"
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" printf(\"%f\", f);\n"
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" printf(\"%p\", f);\n"
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"}");
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TODO_ASSERT_EQUALS("[test.cpp:3]: (warning) %u in format string (no. 1) requires an integer given in the argument list\n"
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"[test.cpp:4]: (warning) %f in format string (no. 1) requires an integer given in the argument list\n"
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"[test.cpp:5]: (warning) %p in format string (no. 1) requires an integer given in the argument list\n", "", errout.str());
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}
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};
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REGISTER_TEST(TestIO)
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