Use lifetime analysis for checking mismatching containers (#2456)
* Use lifetimes to check for mismatching containers * Fix error messages * Format * Remove unused variables * Fix configuration and track iterators through algorithms * Fix iterator value types in qt config * Fix library issue with QStringList * Remove unused functions * Fix cppcheck errors
This commit is contained in:
Paul Fultz II
Daniel Marjamäki
parent
0cd2935dc7
commit
42d44f02a2
11
cfg/qt.cfg
11
cfg/qt.cfg
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@ -4839,7 +4839,7 @@
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</arg>
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</function>
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<!-- ##### Container ##### -->
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<container id="qtContainer" opLessAllowed="false" itEndPattern="> :: iterator|const_iterator">
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<container id="qtContainer" endPattern="> !!::" opLessAllowed="false" itEndPattern="> :: iterator|const_iterator">
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<type templateParameter="0"/>
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<size>
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<function name="append" action="push"/>
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@ -4873,6 +4873,7 @@
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<function name="pop_front" action="pop"/>
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<function name="removeAll" action="change"/>
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<function name="removeAt" action="pop"/>
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<function name="removeDuplicates" action="change"/>
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<function name="removeFirst" action="pop"/>
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<function name="removeLast" action="pop"/>
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<function name="takeAt" action="pop"/>
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@ -5000,12 +5001,8 @@
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<function name="crend" yields="end-iterator"/>
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</access>
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</container>
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<!-- TODO: Inheriting from qtList also inherits from qtContainer which sets "<type templateParameter="0"/>". This is not correct, but seems to do no harm. Currently this can not be unset. -->
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<container id="qtStringList" startPattern="QStringList" inherits="qtList" opLessAllowed="true" itEndPattern=":: iterator|const_iterator|reverse_iterator|const_reverse_iterator">
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<size>
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<function name="removeDuplicates" action="change"/>
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</size>
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</container>
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<!-- Treat QStringList as QList<QString> since we can't remove the template parameter when we inherit. -->
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<define name="QStringList" value="QList<QString>" />
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<define name="Q_ARG(type, data)" value="QArgument<type >(#type, data)"/>
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<!-- TODO: Enable when ticket 8479 got fixed
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<define name="Q_D(Class)" value="Class##Private * const d = d_func()"/>
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226
lib/checkstl.cpp
226
lib/checkstl.cpp
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@ -274,23 +274,6 @@ void CheckStl::iteratorsError(const Token* tok, const Token* containerTok, const
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"Same iterator is used with containers '" + containerName + "' that are defined in different scopes.", CWE664, false);
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}
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void CheckStl::iteratorsCmpError(const Token* cmpOperatorTok, const Token* containerTok1, const Token* containerTok2, const std::string& containerName1, const std::string& containerName2)
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{
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std::list<const Token*> callstack = { cmpOperatorTok, containerTok1, containerTok2 };
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reportError(callstack, Severity::error, "iteratorsCmp1",
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"$symbol:" + containerName1 + "\n"
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"$symbol:" + containerName2 + "\n"
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"Comparison of iterators from containers '" + containerName1 + "' and '" + containerName2 + "'.", CWE664, false);
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}
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void CheckStl::iteratorsCmpError(const Token* cmpOperatorTok, const Token* containerTok1, const Token* containerTok2, const std::string& containerName)
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{
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std::list<const Token*> callstack = { cmpOperatorTok, containerTok1, containerTok2 };
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reportError(callstack, Severity::error, "iteratorsCmp2",
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"$symbol:" + containerName + "\n"
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"Comparison of iterators from containers '" + containerName + "' that are defined in different scopes.", CWE664, false);
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}
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// Error message used when dereferencing an iterator that has been erased..
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void CheckStl::dereferenceErasedError(const Token *erased, const Token* deref, const std::string &itername, bool inconclusive)
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{
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@ -359,24 +342,6 @@ enum OperandPosition {
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Right
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};
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static const Token* findIteratorContainer(const Token* start, const Token* end, nonneg int id)
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{
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const Token* containerToken = nullptr;
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for (const Token* tok = start; tok != end; tok = tok->next()) {
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if (Token::Match(tok, "%varid% = %name% . %name% (", id)) {
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// Iterator is assigned to value
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if (tok->tokAt(5)->valueType() && tok->tokAt(5)->valueType()->type == ValueType::Type::ITERATOR) {
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containerToken = tok->tokAt(2);
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}
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} else if (Token::Match(tok, "%varid% = %name% (", id)) {
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// Prevent FP: iterator is assigned to something
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// TODO: Fix it in future
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containerToken = nullptr;
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}
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}
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return containerToken;
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}
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static bool isVector(const Token* tok)
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{
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if (!tok)
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@ -400,8 +365,6 @@ void CheckStl::iterators()
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if (iteratorId != 0)
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iteratorScopeBeginInfo[iteratorId] = var->nameToken();
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}
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// Storage to save found comparison problems to avoid duplicate error messages
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std::set<const Token*> foundOperatorErrors;
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for (const Variable* var : symbolDatabase->variableList()) {
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bool inconclusiveType=false;
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@ -439,16 +402,8 @@ void CheckStl::iterators()
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invalidationScope = nullptr;
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}
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// Is comparison expression?
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// Check whether iterator compared against different container or iterator of different container?
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if (tok2->isComparisonOp() && tok2->astOperand1() && tok2->astOperand2() &&
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(foundOperatorErrors.find(tok2) == foundOperatorErrors.end()) &&
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compareIteratorAgainstDifferentContainer(tok2, containerToken, iteratorId, iteratorScopeBeginInfo)) {
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foundOperatorErrors.insert(tok2);
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}
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// Is the iterator used in a insert/erase operation?
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else if (Token::Match(tok2, "%name% . insert|erase ( *| %varid% )|,", iteratorId) && !isVector(tok2)) {
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if (Token::Match(tok2, "%name% . insert|erase ( *| %varid% )|,", iteratorId) && !isVector(tok2)) {
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const Token* itTok = tok2->tokAt(4);
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if (itTok->str() == "*") {
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if (tok2->strAt(2) == "insert")
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@ -579,65 +534,17 @@ void CheckStl::iterators()
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}
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}
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bool CheckStl::compareIteratorAgainstDifferentContainer(const Token* operatorTok, const Token* containerTok, const nonneg int iteratorId, const std::map<int, const Token*>& iteratorScopeBeginInfo)
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{
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if (!containerTok)
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return false;
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const Token *otherOperand = nullptr;
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OperandPosition operandPosition;
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if (operatorTok->astOperand1()->varId() == iteratorId) {
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otherOperand = operatorTok->astOperand2();
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operandPosition = OperandPosition::Right;
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} else if (operatorTok->astOperand2()->varId() == iteratorId) {
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otherOperand = operatorTok->astOperand1();
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operandPosition = OperandPosition::Left;
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}
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if (!otherOperand)
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return false;
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const Token * const otherExprPart = otherOperand->tokAt(-3);
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if (Token::Match(otherExprPart, "%name% . end|rend|cend|crend ( )") && otherExprPart->varId() != containerTok->varId()) {
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const std::string& firstContainerName = getContainerName(containerTok);
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const std::string& secondContainerName = getContainerName(otherExprPart);
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if (firstContainerName != secondContainerName) {
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if (operandPosition == OperandPosition::Right)
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iteratorsError(operatorTok, containerTok, firstContainerName, secondContainerName);
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else
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iteratorsError(operatorTok, containerTok, secondContainerName, firstContainerName);
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} else {
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iteratorsError(operatorTok, containerTok, firstContainerName);
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}
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return true;
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} else {
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const int otherId = otherOperand->varId();
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auto it = iteratorScopeBeginInfo.find(otherId);
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if (it != iteratorScopeBeginInfo.end()) {
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const Token* otherContainerToken = findIteratorContainer(it->second, operatorTok->astOperand1(), otherId);
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if (otherContainerToken && otherContainerToken->varId() != containerTok->varId()) {
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const std::string& firstContainerName = getContainerName(containerTok);
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const std::string& secondContainerName = getContainerName(otherContainerToken);
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if (firstContainerName != secondContainerName) {
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if (operandPosition == OperandPosition::Right)
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iteratorsCmpError(operatorTok, containerTok, otherContainerToken, firstContainerName, secondContainerName);
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else
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iteratorsCmpError(operatorTok, containerTok, otherContainerToken, secondContainerName, firstContainerName);
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} else {
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iteratorsCmpError(operatorTok, containerTok, otherContainerToken, firstContainerName);
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}
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return true;
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}
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}
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}
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return false;
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}
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// Error message for bad iterator usage..
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void CheckStl::mismatchingContainersError(const Token *tok)
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void CheckStl::mismatchingContainersError(const Token* tok1, const Token* tok2)
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{
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reportError(tok, Severity::error, "mismatchingContainers", "Iterators of different containers are used together.", CWE664, false);
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const std::string expr1(tok1 ? tok1->expressionString() : std::string("v1"));
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const std::string expr2(tok2 ? tok2->expressionString() : std::string("v2"));
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reportError(tok1,
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Severity::error,
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"mismatchingContainers",
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"Iterators of different containers '" + expr1 + "' and '" + expr2 + "' are used together.",
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CWE664,
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false);
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}
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void CheckStl::mismatchingContainerExpressionError(const Token *tok1, const Token *tok2)
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@ -679,18 +586,6 @@ static const std::string pattern1x1_1 = "%name% . " + iteratorBeginFuncPattern +
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static const std::string pattern1x1_2 = "%name% . " + iteratorEndFuncPattern + " ( ) ,|)";
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static const std::string pattern2 = pattern1x1_1 + pattern1x1_2;
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static const Variable *getContainer(const Token *argtok)
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{
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while (argtok && argtok->astOperand1())
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argtok = argtok->astOperand1();
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if (!Token::Match(argtok, "%var% . begin|end|rbegin|rend ( )")) // TODO: use Library yield
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return nullptr;
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const Variable *var = argtok->variable();
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if (var && Token::simpleMatch(var->typeStartToken(), "std ::"))
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return var;
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return nullptr;
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}
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static const Token * getIteratorExpression(const Token * tok)
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{
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if (!tok)
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@ -715,6 +610,40 @@ static const Token * getIteratorExpression(const Token * tok)
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return nullptr;
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}
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bool CheckStl::checkIteratorPair(const Token* tok1, const Token* tok2)
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{
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if (!tok1)
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return false;
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if (!tok2)
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return false;
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ValueFlow::Value val1 = getLifetimeObjValue(tok1);
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ValueFlow::Value val2 = getLifetimeObjValue(tok2);
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if (val1.tokvalue && val2.tokvalue && val1.lifetimeKind == val2.lifetimeKind) {
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if (val1.lifetimeKind == ValueFlow::Value::LifetimeKind::Lambda)
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return false;
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if (isSameExpression(true, false, val1.tokvalue, val2.tokvalue, mSettings->library, false, false))
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return false;
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if (val1.tokvalue->expressionString() == val2.tokvalue->expressionString())
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iteratorsError(tok1, val1.tokvalue, val1.tokvalue->expressionString());
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else
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mismatchingContainersError(val1.tokvalue, val2.tokvalue);
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return true;
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}
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const Token* iter1 = getIteratorExpression(tok1);
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const Token* iter2 = getIteratorExpression(tok2);
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if (iter1 && iter2 && !isSameExpression(true, false, iter1, iter2, mSettings->library, false, false)) {
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mismatchingContainerExpressionError(iter1, iter2);
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return true;
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}
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return false;
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}
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struct ArgIteratorInfo {
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const Token* tok;
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const Library::ArgumentChecks::IteratorInfo* info;
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};
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void CheckStl::mismatchingContainers()
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{
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// Check if different containers are used in various calls of standard functions
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@ -722,75 +651,50 @@ void CheckStl::mismatchingContainers()
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for (const Scope * scope : symbolDatabase->functionScopes) {
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for (const Token* tok = scope->bodyStart->next(); tok != scope->bodyEnd; tok = tok->next()) {
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if (Token::Match(tok, "%comp%|-")) {
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const Token * iter1 = getIteratorExpression(tok->astOperand1());
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const Token * iter2 = getIteratorExpression(tok->astOperand2());
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if (iter1 && iter2 && !isSameExpression(true, false, iter1, iter2, mSettings->library, false, false)) {
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mismatchingContainerExpressionError(iter1, iter2);
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if (checkIteratorPair(tok->astOperand1(), tok->astOperand2()))
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continue;
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}
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}
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if (!Token::Match(tok, "%name% ( !!)"))
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continue;
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const Token * const ftok = tok;
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const Token * firstArg = nullptr;
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const std::vector<const Token *> args = getArguments(ftok);
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if (args.size() < 2)
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continue;
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std::map<const Variable *, int> containerNr;
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// Group args together by container
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std::map<int, std::vector<ArgIteratorInfo>> containers;
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for (int argnr = 1; argnr <= args.size(); ++argnr) {
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const Library::ArgumentChecks::IteratorInfo *i = mSettings->library.getArgIteratorInfo(ftok, argnr);
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if (!i)
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continue;
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const Token * const argTok = args[argnr - 1];
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if (i->first) {
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firstArg = argTok;
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}
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if (i->last && firstArg && argTok && isSameExpression(true, false, firstArg, argTok, mSettings->library, false, false)) {
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sameIteratorExpressionError(firstArg);
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}
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const Variable *c = getContainer(argTok);
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if (c) {
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std::map<const Variable *, int>::const_iterator it = containerNr.find(c);
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if (it == containerNr.end()) {
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for (it = containerNr.begin(); it != containerNr.end(); ++it) {
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if (it->second == i->container) {
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mismatchingContainersError(argTok);
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break;
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}
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}
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containerNr[c] = i->container;
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} else if (it->second != i->container) {
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mismatchingContainersError(argTok);
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}
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} else {
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if (i->last && firstArg && argTok) {
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const Token * iter1 = getIteratorExpression(firstArg);
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const Token * iter2 = getIteratorExpression(argTok);
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if (iter1 && iter2 && !isSameExpression(true, false, iter1, iter2, mSettings->library, false, false)) {
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mismatchingContainerExpressionError(iter1, iter2);
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containers[i->container].push_back({argTok, i});
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}
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// Lambda is used to escape the nested loops
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[&] {
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for (const auto& p : containers) {
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const std::vector<ArgIteratorInfo>& cargs = p.second;
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for (ArgIteratorInfo iter1 : cargs) {
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for (ArgIteratorInfo iter2 : cargs) {
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if (iter1.tok == iter2.tok)
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continue;
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if (iter1.info->first && iter2.info->last &&
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isSameExpression(true, false, iter1.tok, iter2.tok, mSettings->library, false, false))
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sameIteratorExpressionError(iter1.tok);
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if (checkIteratorPair(iter1.tok, iter2.tok))
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return;
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}
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}
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}
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}
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const int ret = mSettings->library.returnValueContainer(ftok);
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if (ret != -1 && Token::Match(ftok->next()->astParent(), "==|!=")) {
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const Token *parent = ftok->next()->astParent();
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const Token *other = (parent->astOperand1() == ftok->next()) ? parent->astOperand2() : parent->astOperand1();
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const Variable *c = getContainer(other);
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if (c) {
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const std::map<const Variable *, int>::const_iterator it = containerNr.find(c);
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if (it == containerNr.end() || it->second != ret)
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mismatchingContainersError(other);
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}
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}
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}();
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}
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}
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for (const Variable *var : symbolDatabase->variableList()) {
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if (var && var->isStlStringType() && Token::Match(var->nameToken(), "%var% (") && Token::Match(var->nameToken()->tokAt(2), pattern2.c_str())) {
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if (var->nameToken()->strAt(2) != var->nameToken()->strAt(8)) {
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mismatchingContainersError(var->nameToken());
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mismatchingContainersError(var->nameToken(), var->nameToken()->tokAt(2));
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}
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}
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}
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@ -111,6 +111,8 @@ public:
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void invalidContainer();
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bool checkIteratorPair(const Token* tok1, const Token* tok2);
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/**
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* Mismatching containers:
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* std::find(foo.begin(), bar.end(), x)
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@ -195,9 +197,7 @@ private:
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void iteratorsError(const Token* tok, const std::string& containerName1, const std::string& containerName2);
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void iteratorsError(const Token* tok, const Token* containerTok, const std::string& containerName1, const std::string& containerName2);
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void iteratorsError(const Token* tok, const Token* containerTok, const std::string& containerName);
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void iteratorsCmpError(const Token* cmpOperatorTok, const Token* containerTok1, const Token* containerTok2, const std::string& containerName1, const std::string& containerName2);
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void iteratorsCmpError(const Token* cmpOperatorTok, const Token* containerTok1, const Token* containerTok2, const std::string& containerName);
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void mismatchingContainersError(const Token* tok);
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void mismatchingContainersError(const Token* tok1, const Token* tok2);
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void mismatchingContainerExpressionError(const Token *tok1, const Token *tok2);
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void sameIteratorExpressionError(const Token *tok);
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void stlBoundariesError(const Token* tok);
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@ -220,8 +220,6 @@ private:
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void useStlAlgorithmError(const Token *tok, const std::string &algoName);
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bool compareIteratorAgainstDifferentContainer(const Token* operatorTok, const Token* containerTok, const nonneg int iteratorId, const std::map<int, const Token*>& iteratorScopeBeginInfo);
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void getErrorMessages(ErrorLogger* errorLogger, const Settings* settings) const OVERRIDE {
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ErrorPath errorPath;
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CheckStl c(nullptr, settings, errorLogger);
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@ -230,10 +228,8 @@ private:
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c.iteratorsError(nullptr, "container1", "container2");
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c.iteratorsError(nullptr, nullptr, "container0", "container1");
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c.iteratorsError(nullptr, nullptr, "container");
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c.iteratorsCmpError(nullptr, nullptr, nullptr, "container1", "container2");
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c.iteratorsCmpError(nullptr, nullptr, nullptr, "container");
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c.invalidContainerError(nullptr, nullptr, nullptr, errorPath);
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c.mismatchingContainersError(nullptr);
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c.mismatchingContainersError(nullptr, nullptr);
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c.mismatchingContainerExpressionError(nullptr, nullptr);
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c.sameIteratorExpressionError(nullptr);
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c.dereferenceErasedError(nullptr, nullptr, "iter", false);
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|
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@ -3612,7 +3612,20 @@ static void valueFlowLifetimeFunction(Token *tok, TokenList *tokenlist, ErrorLog
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{
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if (!Token::Match(tok, "%name% ("))
|
||||
return;
|
||||
if (Token::Match(tok->tokAt(-2), "std :: ref|cref|tie|front_inserter|back_inserter")) {
|
||||
int returnContainer = settings->library.returnValueContainer(tok);
|
||||
if (returnContainer >= 0) {
|
||||
std::vector<const Token *> args = getArguments(tok);
|
||||
for (int argnr = 1; argnr <= args.size(); ++argnr) {
|
||||
const Library::ArgumentChecks::IteratorInfo *i = settings->library.getArgIteratorInfo(tok, argnr);
|
||||
if (!i)
|
||||
continue;
|
||||
if (i->container != returnContainer)
|
||||
continue;
|
||||
const Token * const argTok = args[argnr - 1];
|
||||
LifetimeStore{argTok, "Passed to '" + tok->str() + "'.", ValueFlow::Value::LifetimeKind::Iterator} .byVal(
|
||||
tok->next(), tokenlist, errorLogger, settings);
|
||||
}
|
||||
} else if (Token::Match(tok->tokAt(-2), "std :: ref|cref|tie|front_inserter|back_inserter")) {
|
||||
for (const Token *argtok : getArguments(tok)) {
|
||||
LifetimeStore{argtok, "Passed to '" + tok->str() + "'.", ValueFlow::Value::LifetimeKind::Object} .byRef(
|
||||
tok->next(), tokenlist, errorLogger, settings);
|
||||
|
|
|
|||
|
|
@ -40,7 +40,7 @@ QString::iterator QString3()
|
|||
{
|
||||
QString qstring1;
|
||||
QString qstring2;
|
||||
// cppcheck-suppress iterators2
|
||||
// cppcheck-suppress mismatchingContainers
|
||||
for (QString::iterator it = qstring1.begin(); it != qstring2.end(); ++it)
|
||||
{}
|
||||
|
||||
|
|
@ -126,12 +126,12 @@ QList<int>::iterator QList3()
|
|||
{
|
||||
QList<int> qlist1;
|
||||
QList<int> qlist2;
|
||||
// cppcheck-suppress iterators2
|
||||
// cppcheck-suppress mismatchingContainers
|
||||
for (QList<int>::iterator it = qlist1.begin(); it != qlist2.end(); ++it)
|
||||
{}
|
||||
|
||||
QList<int>::iterator it = qlist1.begin();
|
||||
// TODO: cppcheck-suppress returnDanglingLifetime
|
||||
// cppcheck-suppress returnDanglingLifetime
|
||||
return it;
|
||||
}
|
||||
|
||||
|
|
@ -162,12 +162,12 @@ QLinkedList<int>::iterator QLinkedList3()
|
|||
{
|
||||
QLinkedList<int> intQLinkedList1;
|
||||
QLinkedList<int> intQLinkedList2;
|
||||
// cppcheck-suppress iterators2
|
||||
// cppcheck-suppress mismatchingContainers
|
||||
for (QLinkedList<int>::iterator it = intQLinkedList1.begin(); it != intQLinkedList2.end(); ++it)
|
||||
{}
|
||||
|
||||
QLinkedList<int>::iterator it = intQLinkedList1.begin();
|
||||
// TODO: cppcheck-suppress returnDanglingLifetime
|
||||
// cppcheck-suppress returnDanglingLifetime
|
||||
return it;
|
||||
}
|
||||
|
||||
|
|
@ -219,7 +219,7 @@ QStringList::iterator QStringList2()
|
|||
{
|
||||
QStringList qstringlist1;
|
||||
QStringList qstringlist2;
|
||||
// cppcheck-suppress iterators2
|
||||
// cppcheck-suppress mismatchingContainers
|
||||
for (QStringList::iterator it = qstringlist1.begin(); it != qstringlist2.end(); ++it)
|
||||
{}
|
||||
|
||||
|
|
@ -273,12 +273,12 @@ QVector<int>::iterator QVector2()
|
|||
{
|
||||
QVector<int> qvector1;
|
||||
QVector<int> qvector2;
|
||||
// cppcheck-suppress iterators2
|
||||
// cppcheck-suppress mismatchingContainers
|
||||
for (QVector<int>::iterator it = qvector1.begin(); it != qvector2.end(); ++it)
|
||||
{}
|
||||
|
||||
QVector<int>::iterator it = qvector1.begin();
|
||||
// TODO cppcheck-suppress returnDanglingLifetime
|
||||
// cppcheck-suppress returnDanglingLifetime
|
||||
return it;
|
||||
}
|
||||
|
||||
|
|
@ -326,12 +326,12 @@ QStack<int>::iterator QStack2()
|
|||
{
|
||||
QStack<int> qstack1;
|
||||
QStack<int> qstack2;
|
||||
// cppcheck-suppress iterators2
|
||||
// cppcheck-suppress mismatchingContainers
|
||||
for (QStack<int>::iterator it = qstack1.begin(); it != qstack2.end(); ++it)
|
||||
{}
|
||||
|
||||
QStack<int>::iterator it = qstack1.begin();
|
||||
// TODO cppcheck-suppress returnDanglingLifetime
|
||||
// cppcheck-suppress returnDanglingLifetime
|
||||
return it;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -312,7 +312,7 @@ wxString::iterator wxString_test3()
|
|||
{
|
||||
wxString wxString1;
|
||||
wxString wxString2;
|
||||
// cppcheck-suppress iterators2
|
||||
// cppcheck-suppress mismatchingContainers
|
||||
for (wxString::iterator it = wxString1.begin(); it != wxString2.end(); ++it)
|
||||
{}
|
||||
|
||||
|
|
|
|||
177
test/teststl.cpp
177
test/teststl.cpp
|
|
@ -357,21 +357,23 @@ private:
|
|||
void iterator1() {
|
||||
check("void f()\n"
|
||||
"{\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" for (list<int>::iterator it = l1.begin(); it != l2.end(); ++it)\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" for (std::list<int>::iterator it = l1.begin(); it != l2.end(); ++it)\n"
|
||||
" { }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:5]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void f()\n"
|
||||
"{\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" for (list<int>::iterator it = l1.begin(); l2.end() != it; ++it)\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" for (std::list<int>::iterator it = l1.begin(); l2.end() != it; ++it)\n"
|
||||
" { }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:5]: (error) Same iterator is used with different containers 'l2' and 'l1'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l2' and 'l1' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("struct C { std::list<int> l1; void func(); };\n"
|
||||
"void C::func() {\n"
|
||||
|
|
@ -385,79 +387,82 @@ private:
|
|||
// Same check with reverse iterator
|
||||
check("void f()\n"
|
||||
"{\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" for (list<int>::const_reverse_iterator it = l1.rbegin(); it != l2.rend(); ++it)\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" for (std::list<int>::const_reverse_iterator it = l1.rbegin(); it != l2.rend(); ++it)\n"
|
||||
" { }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:5]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator2() {
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" list<int>::iterator it = l1.begin();\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" std::list<int>::iterator it = l1.begin();\n"
|
||||
" while (it != l2.end())\n"
|
||||
" {\n"
|
||||
" ++it;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:6] -> [test.cpp:5]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" list<int>::iterator it = l1.begin();\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" std::list<int>::iterator it = l1.begin();\n"
|
||||
" while (l2.end() != it)\n"
|
||||
" {\n"
|
||||
" ++it;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:6] -> [test.cpp:5]: (error) Same iterator is used with different containers 'l2' and 'l1'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:6]: (error) Iterators of different containers 'l2' and 'l1' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator3() {
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" list<int>::iterator it = l1.begin();\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" std::list<int>::iterator it = l1.begin();\n"
|
||||
" l2.insert(it, 0);\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:6]: (error) Same iterator is used with different containers 'l1' and 'l2'.\n", errout.str());
|
||||
|
||||
check("void foo() {\n" // #5803
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" list<int>::iterator it = l1.begin();\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" std::list<int>::iterator it = l1.begin();\n"
|
||||
" l2.insert(it, l1.end());\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("", errout.str());
|
||||
|
||||
check("void foo() {\n" // #7658
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" list<int>::iterator it = l1.begin();\n"
|
||||
" list<int>::iterator end = l1.end();\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" std::list<int>::iterator it = l1.begin();\n"
|
||||
" std::list<int>::iterator end = l1.end();\n"
|
||||
" l2.insert(it, end);\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("", errout.str());
|
||||
|
||||
// only warn for insert when there are preciself 2 arguments.
|
||||
check("void foo() {\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" list<int>::iterator it = l1.begin();\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" std::list<int>::iterator it = l1.begin();\n"
|
||||
" l2.insert(it);\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("", errout.str());
|
||||
check("void foo() {\n"
|
||||
" list<int> l1;\n"
|
||||
" list<int> l2;\n"
|
||||
" list<int>::iterator it = l1.begin();\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2;\n"
|
||||
" std::list<int>::iterator it = l1.begin();\n"
|
||||
" l2.insert(it,0,1);\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("", errout.str());
|
||||
|
|
@ -485,7 +490,8 @@ private:
|
|||
" std::vector<int> ints2;\n"
|
||||
" std::vector<int>::iterator it = std::find(ints1.begin(), ints2.end(), 22);\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'ints1' and 'ints2' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator6() {
|
||||
|
|
@ -516,7 +522,8 @@ private:
|
|||
" std::vector<int> ints2;\n"
|
||||
" std::vector<int>::iterator it = std::inplace_merge(ints1.begin(), std::advance(ints1.rbegin(), 5), ints2.end());\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'ints1' and 'ints2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -534,7 +541,8 @@ private:
|
|||
" std::vector<int> ints2;\n"
|
||||
" std::vector<int>::iterator it = std::find_first_of(ints1.begin(), ints2.end(), ints1.begin(), ints1.end());\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'ints1' and 'ints2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -542,7 +550,8 @@ private:
|
|||
" std::vector<int> ints2;\n"
|
||||
" std::vector<int>::iterator it = std::find_first_of(ints1.begin(), ints1.end(), ints2.begin(), ints1.end());\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'ints2' and 'ints1' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -550,7 +559,8 @@ private:
|
|||
" std::vector<int> ints2;\n"
|
||||
" std::vector<int>::iterator it = std::find_first_of(foo.bar.begin(), foo.bar.end()-6, ints2.begin(), ints1.end());\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'ints2' and 'ints1' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -569,10 +579,11 @@ private:
|
|||
" const std::string fp1 = std::string(a.begin(), a.end());\n"
|
||||
" const std::string tp2(a.begin(), a.end());\n"
|
||||
"}");
|
||||
ASSERT_EQUALS(// TODO "[test.cpp:2]: (error) Iterators of different containers are used together.\n"
|
||||
// TODO "[test.cpp:3]: (error) Iterators of different containers are used together.\n"
|
||||
"[test.cpp:4]: (error) Iterators of different containers are used together.\n"
|
||||
"[test.cpp:5]: (error) Iterators of different containers are used together.\n", errout.str());
|
||||
ASSERT_EQUALS( // TODO "[test.cpp:2]: (error) Iterators of different containers are used together.\n"
|
||||
// TODO "[test.cpp:3]: (error) Iterators of different containers are used together.\n"
|
||||
"[test.cpp:4]: (error) Iterators of different containers 'tp3' and 'a' are used together.\n"
|
||||
"[test.cpp:5]: (error) Iterators of different containers 'tp4' and 'b' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator9() {
|
||||
|
|
@ -640,7 +651,8 @@ private:
|
|||
" if (it != s2.end()) continue;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:5]: (error) Same iterator is used with different containers 's1' and 's2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 's1' and 's2' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator11() {
|
||||
|
|
@ -662,7 +674,8 @@ private:
|
|||
" std::map<int, int>::const_iterator it = map1.find(123);\n"
|
||||
" if (it == map2.end()) { }"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:4]: (error) Same iterator is used with different containers 'map1' and 'map2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:4]: (error) Iterators of different containers 'map1' and 'map2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void f() {\n"
|
||||
" std::map<int, int> map1;\n"
|
||||
|
|
@ -670,7 +683,8 @@ private:
|
|||
" std::map<int, int>::const_iterator it = map1.find(123);\n"
|
||||
" if (map2.end() == it) { }"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:4]: (error) Same iterator is used with different containers 'map2' and 'map1'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'map2' and 'map1' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void f(std::string &s) {\n"
|
||||
" int pos = s.find(x);\n"
|
||||
|
|
@ -692,7 +706,8 @@ private:
|
|||
" while (it!=a.end())\n"
|
||||
" ++it;\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:8]: (error) Same iterator is used with different containers 't' and 'a'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:8]: (error) Iterators of different containers 't' and 'a' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
// #4062
|
||||
check("void f() {\n"
|
||||
|
|
@ -753,7 +768,8 @@ private:
|
|||
" ++it1;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5] -> [test.cpp:6]: (error) Comparison of iterators from containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -766,7 +782,8 @@ private:
|
|||
" ++it2;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6] -> [test.cpp:5]: (error) Comparison of iterators from containers 'l2' and 'l1'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:6]: (error) Iterators of different containers 'l2' and 'l1' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -779,21 +796,22 @@ private:
|
|||
" ++it1;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6] -> [test.cpp:5]: (error) Comparison of iterators from containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:6]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
" std::list<int> l1;\n"
|
||||
" std::list<int> l2(10, 4);\n"
|
||||
" std::list<int>::iterator it1 = l1.begin();\n"
|
||||
" std::list<int>::iterator it2 = l2.find(4);\n"
|
||||
" std::set<int> l1;\n"
|
||||
" std::set<int> l2(10, 4);\n"
|
||||
" std::set<int>::iterator it1 = l1.begin();\n"
|
||||
" std::set<int>::iterator it2 = l2.find(4);\n"
|
||||
" while (it1 != it2)\n"
|
||||
" {\n"
|
||||
" ++it1;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6] -> [test.cpp:5]: (error) Comparison of iterators from containers 'l1' and 'l2'.\n", errout.str());
|
||||
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator17() {
|
||||
|
|
@ -809,7 +827,8 @@ private:
|
|||
" ++it1;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:5] -> [test.cpp:7]: (error) Comparison of iterators from containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -854,7 +873,8 @@ private:
|
|||
" ++it1;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:5] -> [test.cpp:9]: (error) Comparison of iterators from containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator18() {
|
||||
|
|
@ -920,9 +940,10 @@ private:
|
|||
" }\n"
|
||||
" }\n"
|
||||
"}");
|
||||
TODO_ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:4]: (error) Same iterator is used with containers 'l1' that are defined in different scopes.\n",
|
||||
"[test.cpp:7] -> [test.cpp:4]: (error) Same iterator is used with containers 'l1' that are defined in different scopes.\n[test.cpp:7]: (error) Dangerous comparison using operator< on iterator.\n",
|
||||
errout.str());
|
||||
TODO_ASSERT_EQUALS(
|
||||
"[test.cpp:7] -> [test.cpp:4]: (error) Same iterator is used with containers 'l1' that are defined in different scopes.\n",
|
||||
"[test.cpp:7] -> [test.cpp:7]: (error) Same iterator is used with containers 'l1' that are defined in different scopes.\n[test.cpp:7]: (error) Dangerous comparison using operator< on iterator.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -936,7 +957,9 @@ private:
|
|||
" }\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:4] -> [test.cpp:7]: (error) Comparison of iterators from containers 'l1' that are defined in different scopes.\n", errout.str());
|
||||
ASSERT_EQUALS(
|
||||
"[test.cpp:8] -> [test.cpp:4]: (error) Same iterator is used with containers 'l1' that are defined in different scopes.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -950,8 +973,9 @@ private:
|
|||
" }\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:4] -> [test.cpp:7]: (error) Comparison of iterators from containers 'l1' that are defined in different scopes.\n", errout.str());
|
||||
|
||||
ASSERT_EQUALS(
|
||||
"[test.cpp:8] -> [test.cpp:7]: (error) Same iterator is used with containers 'l1' that are defined in different scopes.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator20() {
|
||||
|
|
@ -967,7 +991,8 @@ private:
|
|||
" ++it1;\n"
|
||||
" }\n"
|
||||
"}");
|
||||
TODO_ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:7]: (error) Same iterator is used with different containers 'l2' and 'l1'.\n", "", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:6]: (error) Iterators of different containers 'l2' and 'l1' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("std::list<int> l3;\n"
|
||||
"std::list<int>::iterator bar()\n"
|
||||
|
|
@ -1004,8 +1029,9 @@ private:
|
|||
" {\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6] -> [test.cpp:5]: (error) Comparison of iterators from containers 'l1' and 'l2'.\n"
|
||||
"[test.cpp:10] -> [test.cpp:6] -> [test.cpp:5]: (error) Comparison of iterators from containers 'l2' and 'l1'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n"
|
||||
"[test.cpp:6]: (error) Iterators of different containers 'l2' and 'l1' are used together.\n",
|
||||
errout.str());
|
||||
|
||||
check("void foo()\n"
|
||||
"{\n"
|
||||
|
|
@ -1017,7 +1043,8 @@ private:
|
|||
" {\n"
|
||||
" }\n"
|
||||
"}");
|
||||
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:6] -> [test.cpp:5]: (error) Comparison of iterators from containers 'l1' and 'l2'.\n", errout.str());
|
||||
ASSERT_EQUALS("[test.cpp:5]: (error) Iterators of different containers 'l1' and 'l2' are used together.\n",
|
||||
errout.str());
|
||||
}
|
||||
|
||||
void iterator22() { // #7107
|
||||
|
|
@ -1453,9 +1480,9 @@ private:
|
|||
ASSERT_EQUALS("", errout.str());
|
||||
|
||||
// #2101
|
||||
check("void f(vector< list<int> > &ints, unsigned int i)\n"
|
||||
check("void f(vector< std::list<int> > &ints, unsigned int i)\n"
|
||||
"{\n"
|
||||
" list<int>::iterator it;\n"
|
||||
" std::list<int>::iterator it;\n"
|
||||
" for(it = ints[i].begin(); it != ints[i].end(); it++) {\n"
|
||||
" if (*it % 2)\n"
|
||||
" it = ints[i].erase(it);\n"
|
||||
|
|
@ -1717,11 +1744,11 @@ private:
|
|||
}
|
||||
|
||||
void eraseAssign2() {
|
||||
check("void f(list<int> &ints)\n"
|
||||
check("void f(std::list<int> &ints)\n"
|
||||
"{\n"
|
||||
" for (list<int>::iterator it = ints.begin(); it != ints.end();) {\n"
|
||||
" for (std::list<int>::iterator it = ints.begin(); it != ints.end();) {\n"
|
||||
" if (*it == 123) {\n"
|
||||
" list<int>::iterator copy = it;\n"
|
||||
" std::list<int>::iterator copy = it;\n"
|
||||
" ++copy;\n"
|
||||
" ints.erase(it);\n"
|
||||
" it = copy;\n"
|
||||
|
|
|
|||
Loading…
Reference in New Issue