440 lines
17 KiB
C++
440 lines
17 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2016 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 "config.h"
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#include "cppcheck.h"
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#include "settings.h"
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#include "suppressions.h"
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#include "testsuite.h"
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#include "threadexecutor.h"
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#include <cstddef>
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#include <list>
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#include <map>
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#include <string>
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#include <utility>
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#include <vector>
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class TestSuppressions : public TestFixture {
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public:
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TestSuppressions() : TestFixture("TestSuppressions") {
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}
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private:
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void run() {
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TEST_CASE(suppressionsBadId1);
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TEST_CASE(suppressionsDosFormat); // Ticket #1836
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TEST_CASE(suppressionsFileNameWithColon); // Ticket #1919 - filename includes colon
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TEST_CASE(suppressionsGlob);
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TEST_CASE(suppressionsFileNameWithExtraPath);
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TEST_CASE(suppressionsSettings);
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TEST_CASE(suppressionsMultiFile);
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TEST_CASE(suppressionsPathSeparator);
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TEST_CASE(inlinesuppress_unusedFunction); // #4210 - unusedFunction
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TEST_CASE(globalsuppress_unusedFunction); // #4946
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TEST_CASE(suppressionWithRelativePaths); // #4733
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TEST_CASE(suppressingSyntaxErrors); // #7076
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TEST_CASE(suppressingSyntaxErrorsInline); // #5917
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}
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void suppressionsBadId1() const {
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Suppressions suppressions;
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std::istringstream s1("123");
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ASSERT_EQUALS("Failed to add suppression. Invalid id \"123\"", suppressions.parseFile(s1));
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std::istringstream s2("obsoleteFunctionsrand_r");
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ASSERT_EQUALS("", suppressions.parseFile(s2));
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}
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void suppressionsDosFormat() const {
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Suppressions suppressions;
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std::istringstream s("abc\r\ndef\r\n");
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ASSERT_EQUALS("", suppressions.parseFile(s));
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ASSERT_EQUALS(true, suppressions.isSuppressed("abc", "test.cpp", 1));
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ASSERT_EQUALS(true, suppressions.isSuppressed("def", "test.cpp", 1));
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}
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void suppressionsFileNameWithColon() const {
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Suppressions suppressions;
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std::istringstream s("errorid:c:\\foo.cpp\nerrorid:c:\\bar.cpp:12");
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ASSERT_EQUALS("", suppressions.parseFile(s));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "c:/foo.cpp", 1111));
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ASSERT_EQUALS(false, suppressions.isSuppressed("errorid", "c:/bar.cpp", 10));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "c:/bar.cpp", 12));
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}
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void suppressionsGlob() const {
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// Check for syntax errors in glob
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{
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Suppressions suppressions;
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std::istringstream s("errorid:**.cpp\n");
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ASSERT_EQUALS("Failed to add suppression. Syntax error in glob.", suppressions.parseFile(s));
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}
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// Check that globbing works
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{
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Suppressions suppressions;
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std::istringstream s("errorid:x*.cpp\nerrorid:y?.cpp\nerrorid:test.c*");
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ASSERT_EQUALS("", suppressions.parseFile(s));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "xyz.cpp", 1));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "xyz.cpp.cpp", 1));
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ASSERT_EQUALS(false, suppressions.isSuppressed("errorid", "abc.cpp", 1));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "ya.cpp", 1));
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ASSERT_EQUALS(false, suppressions.isSuppressed("errorid", "y.cpp", 1));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "test.c", 1));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "test.cpp", 1));
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}
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// Check that both a filename match and a glob match apply
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{
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Suppressions suppressions;
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std::istringstream s("errorid:x*.cpp\nerrorid:xyz.cpp:1\nerrorid:a*.cpp:1\nerrorid:abc.cpp:2");
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ASSERT_EQUALS("", suppressions.parseFile(s));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "xyz.cpp", 1));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "xyz.cpp", 2));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "abc.cpp", 1));
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "abc.cpp", 2));
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}
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}
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void suppressionsFileNameWithExtraPath() const {
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// Ticket #2797
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Suppressions suppressions;
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suppressions.addSuppression("errorid", "./a.c", 123);
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ASSERT_EQUALS(true, suppressions.isSuppressed("errorid", "a.c", 123));
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}
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void reportSuppressions(const Settings &settings, const std::map<std::string, std::string> &files) {
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// make it verbose that this check is disabled
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const bool unusedFunctionCheck = false;
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if (settings.jointSuppressionReport) {
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for (std::map<std::string, std::string>::const_iterator i = files.begin(); i != files.end(); ++i) {
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reportUnmatchedSuppressions(settings.nomsg.getUnmatchedLocalSuppressions(i->first, unusedFunctionCheck));
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}
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}
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reportUnmatchedSuppressions(settings.nomsg.getUnmatchedGlobalSuppressions(unusedFunctionCheck));
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}
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// Check the suppression
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unsigned int checkSuppression(const char code[], const std::string &suppression = emptyString) {
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std::map<std::string, std::string> files;
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files["test.cpp"] = code;
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return checkSuppression(files, suppression);
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}
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// Check the suppression for multiple files
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unsigned int checkSuppression(std::map<std::string, std::string> &files, const std::string &suppression = emptyString) {
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// Clear the error log
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errout.str("");
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CppCheck cppCheck(*this, true);
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Settings& settings = cppCheck.settings();
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settings.inlineSuppressions = true;
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settings.addEnabled("information");
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settings.jointSuppressionReport = true;
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if (!suppression.empty()) {
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std::string r = settings.nomsg.addSuppressionLine(suppression);
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ASSERT_EQUALS("", r);
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}
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unsigned int exitCode = 0;
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for (std::map<std::string, std::string>::const_iterator file = files.begin(); file != files.end(); ++file) {
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exitCode |= cppCheck.check(file->first, file->second);
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}
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cppCheck.analyseWholeProgram();
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reportSuppressions(settings, files);
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return exitCode;
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}
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unsigned int checkSuppressionThreads(const char code[], const std::string &suppression = emptyString) {
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errout.str("");
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output.str("");
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std::map<std::string, std::size_t> files;
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files["test.cpp"] = 1;
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Settings settings;
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settings.jobs = 1;
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settings.inlineSuppressions = true;
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settings.addEnabled("information");
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if (!suppression.empty()) {
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ASSERT_EQUALS("", settings.nomsg.addSuppressionLine(suppression));
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}
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ThreadExecutor executor(files, settings, *this);
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for (std::map<std::string, std::size_t>::const_iterator i = files.begin(); i != files.end(); ++i)
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executor.addFileContent(i->first, code);
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unsigned int exitCode = executor.check();
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std::map<std::string, std::string> files_for_report;
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for (std::map<std::string, std::size_t>::const_iterator file = files.begin(); file != files.end(); ++file)
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files_for_report[file->first] = "";
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reportSuppressions(settings, files_for_report);
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return exitCode;
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}
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void runChecks(unsigned int (TestSuppressions::*check)(const char[], const std::string &)) {
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// check to make sure the appropriate error is present
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(this->*check)("void f() {\n"
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" int a;\n"
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" a++;\n"
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"}\n",
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"");
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ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: a\n", errout.str());
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// suppress uninitvar globally
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(this->*check)("void f() {\n"
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" int a;\n"
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" a++;\n"
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"}\n",
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"uninitvar");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar globally, without error present
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(this->*check)("void f() {\n"
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" int a;\n"
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" b++;\n"
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"}\n",
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"uninitvar");
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ASSERT_EQUALS("[*]: (information) Unmatched suppression: uninitvar\n", errout.str());
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// suppress uninitvar for this file only
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(this->*check)("void f() {\n"
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" int a;\n"
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" a++;\n"
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"}\n",
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"uninitvar:test.cpp");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar for this file only, without error present
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(this->*check)("void f() {\n"
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" int a;\n"
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" b++;\n"
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"}\n",
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"uninitvar:test.cpp");
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ASSERT_EQUALS("[test.cpp]: (information) Unmatched suppression: uninitvar\n", errout.str());
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// suppress all for this file only
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(this->*check)("void f() {\n"
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" int a;\n"
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" a++;\n"
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"}\n",
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"*:test.cpp");
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ASSERT_EQUALS("", errout.str());
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// suppress all for this file only, without error present
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(this->*check)("void f() {\n"
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" int a;\n"
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" b++;\n"
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"}\n",
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"*:test.cpp");
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ASSERT_EQUALS("[test.cpp]: (information) Unmatched suppression: *\n", errout.str());
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// suppress uninitvar for this file and line
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(this->*check)("void f() {\n"
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" int a;\n"
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" a++;\n"
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"}\n",
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"uninitvar:test.cpp:3");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar for this file and line, without error present
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(this->*check)("void f() {\n"
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" int a;\n"
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" b++;\n"
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"}\n",
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"uninitvar:test.cpp:3");
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ASSERT_EQUALS("[test.cpp:3]: (information) Unmatched suppression: uninitvar\n", errout.str());
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// suppress uninitvar inline
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(this->*check)("void f() {\n"
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" int a;\n"
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" // cppcheck-suppress uninitvar\n"
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" a++;\n"
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"}\n",
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"");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar inline
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(this->*check)("void f() {\n"
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" int a;\n"
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" // cppcheck-suppress uninitvar\n"
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"\n"
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" a++;\n"
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"}\n",
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"");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar inline
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(this->*check)("void f() {\n"
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" int a;\n"
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" /* cppcheck-suppress uninitvar */\n"
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" a++;\n"
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"}\n",
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"");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar inline
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(this->*check)("void f() {\n"
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" int a;\n"
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" /* cppcheck-suppress uninitvar */\n"
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"\n"
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" a++;\n"
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"}\n",
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"");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar inline, with asm before (#6813)
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(this->*check)("void f() {\n"
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" __asm {\n"
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" foo\n"
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" }"
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" int a;\n"
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" // cppcheck-suppress uninitvar\n"
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" a++;\n"
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"}",
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"");
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ASSERT_EQUALS("", errout.str());
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// suppress uninitvar inline, without error present
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(this->*check)("void f() {\n"
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" int a;\n"
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" // cppcheck-suppress uninitvar\n"
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" b++;\n"
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"}\n",
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"");
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ASSERT_EQUALS("[test.cpp:4]: (information) Unmatched suppression: uninitvar\n", errout.str());
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// #5746 - exitcode
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ASSERT_EQUALS(1U,
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(this->*check)("int f() {\n"
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" int a; return a;\n"
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"}\n",
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""));
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ASSERT_EQUALS(0U,
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(this->*check)("int f() {\n"
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" int a; return a;\n"
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"}\n",
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"uninitvar"));
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}
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void suppressionsSettings() {
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runChecks(&TestSuppressions::checkSuppression);
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if (ThreadExecutor::isEnabled())
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runChecks(&TestSuppressions::checkSuppressionThreads);
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}
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void suppressionsMultiFile() {
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std::map<std::string, std::string> files;
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files["abc.cpp"] = "void f() {\n"
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"}\n";
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files["xyz.cpp"] = "void f() {\n"
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" int a;\n"
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" a++;\n"
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"}\n";
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// suppress uninitvar for this file and line
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checkSuppression(files, "uninitvar:xyz.cpp:3");
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ASSERT_EQUALS("", errout.str());
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}
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void suppressionsPathSeparator() const {
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Suppressions suppressions;
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suppressions.addSuppressionLine("*:test\\*");
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ASSERT_EQUALS(true, suppressions.isSuppressed("someid", "test/foo/bar.cpp", 142));
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suppressions.addSuppressionLine("abc:include/1.h");
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ASSERT_EQUALS(true, suppressions.isSuppressed("abc", "include\\1.h", 142));
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}
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void inlinesuppress_unusedFunction() const { // #4210, #4946 - wrong report of "unmatchedSuppression" for "unusedFunction"
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Suppressions suppressions;
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suppressions.addSuppression("unusedFunction", "test.c", 3U);
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ASSERT_EQUALS(true, !suppressions.getUnmatchedLocalSuppressions("test.c", true).empty());
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ASSERT_EQUALS(false, !suppressions.getUnmatchedGlobalSuppressions(true).empty());
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ASSERT_EQUALS(false, !suppressions.getUnmatchedLocalSuppressions("test.c", false).empty());
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ASSERT_EQUALS(false, !suppressions.getUnmatchedGlobalSuppressions(false).empty());
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}
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void globalsuppress_unusedFunction() const { // #4946 - wrong report of "unmatchedSuppression" for "unusedFunction"
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Suppressions suppressions;
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suppressions.addSuppressionLine("unusedFunction:*");
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ASSERT_EQUALS(false, !suppressions.getUnmatchedLocalSuppressions("test.c", true).empty());
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ASSERT_EQUALS(true, !suppressions.getUnmatchedGlobalSuppressions(true).empty());
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ASSERT_EQUALS(false, !suppressions.getUnmatchedLocalSuppressions("test.c", false).empty());
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ASSERT_EQUALS(false, !suppressions.getUnmatchedGlobalSuppressions(false).empty());
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}
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void suppressionWithRelativePaths() {
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// Clear the error log
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errout.str("");
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CppCheck cppCheck(*this, true);
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Settings& settings = cppCheck.settings();
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settings.addEnabled("style");
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settings.inlineSuppressions = true;
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settings.relativePaths = true;
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settings.basePaths.push_back("/somewhere");
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const char code[] =
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"struct Point\n"
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"{\n"
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" // cppcheck-suppress unusedStructMember\n"
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" int x;\n"
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" // cppcheck-suppress unusedStructMember\n"
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" int y;\n"
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"};";
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cppCheck.check("/somewhere/test.cpp", code);
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ASSERT_EQUALS("",errout.str());
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}
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void suppressingSyntaxErrors() { // syntaxErrors should be suppressable (#7076)
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std::map<std::string, std::string> files;
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files["test.cpp"] = "if if\n";
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checkSuppression(files, "syntaxError:test.cpp:1");
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ASSERT_EQUALS("", errout.str());
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}
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void suppressingSyntaxErrorsInline() { // syntaxErrors should be suppressable (#5917)
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std::map<std::string, std::string> files;
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files["test.cpp"] = "double result(0.0);\n"
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"_asm\n"
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"{\n"
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" // cppcheck-suppress syntaxError\n"
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" push EAX ; save EAX for callers \n"
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" mov EAX,Real10 ; get the address pointed to by Real10\n"
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" fld TBYTE PTR [EAX] ; load an extended real (10 bytes)\n"
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" fstp QWORD PTR result ; store a double (8 bytes)\n"
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" pop EAX ; restore EAX\n"
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"}";
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checkSuppression(files, "");
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ASSERT_EQUALS("", errout.str());
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}
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};
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REGISTER_TEST(TestSuppressions)
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