- Fixed false positive when passing pointer to typeof()
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@ -344,11 +344,11 @@ bool CheckNullPointer::isPointerDeRef(const Token *tok, bool &unknown)
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prev = prev->link()->previous();
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// Dereferencing pointer..
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if (prev->str() == "*" && (Token::Match(prev->previous(), "return|throw|;|{|}|:|[|(|,") || prev->previous()->isOp()) && !Token::Match(prev->tokAt(-2), "sizeof|decltype"))
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if (prev->str() == "*" && (Token::Match(prev->previous(), "return|throw|;|{|}|:|[|(|,") || prev->previous()->isOp()) && !Token::Match(prev->tokAt(-2), "sizeof|decltype|typeof"))
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return true;
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// read/write member variable
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if (!Token::simpleMatch(prev->previous(), "& (") && !Token::Match(prev->previous(), "sizeof|decltype (") && prev->str() != "&" && Token::Match(tok->next(), ". %var%")) {
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if (!Token::simpleMatch(prev->previous(), "& (") && !Token::Match(prev->previous(), "sizeof|decltype|typeof (") && prev->str() != "&" && Token::Match(tok->next(), ". %var%")) {
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if (tok->strAt(3) != "(")
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return true;
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unknown = true;
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@ -623,8 +623,8 @@ void CheckNullPointer::nullPointerStructByDeRefAndChec()
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tok1 = tok1->next();
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}
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// dereference in function call (but not sizeof|decltype)
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else if ((Token::Match(tok1->tokAt(-2), "%var% ( %var% . %var%") && !Token::Match(tok1->tokAt(-2), "sizeof|decltype ( %var% . %var%")) ||
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// dereference in function call (but not sizeof|decltype|typeof)
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else if ((Token::Match(tok1->tokAt(-2), "%var% ( %var% . %var%") && !Token::Match(tok1->tokAt(-2), "sizeof|decltype|typeof ( %var% . %var%")) ||
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Token::Match(tok1->previous(), ", %var% . %var%")) {
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// Is the function return value taken by the pointer?
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bool assignment = false;
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@ -1071,7 +1071,7 @@ void CheckNullPointer::nullPointerByCheckAndDeRef()
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break;
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// parameters to sizeof are not dereferenced
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if (Token::Match(tok2, "decltype|sizeof")) {
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if (Token::Match(tok2, "decltype|sizeof|typeof")) {
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if (tok2->strAt(1) != "(")
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tok2 = tok2->next();
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else
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@ -1161,7 +1161,7 @@ void CheckNullPointer::nullConstantDereference()
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tok = scope->function->token; // Check initialization list
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for (; tok != scope->classEnd; tok = tok->next()) {
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if (Token::Match(tok, "sizeof|decltype|typeid ("))
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if (Token::Match(tok, "sizeof|decltype|typeid|typeof ("))
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tok = tok->next()->link();
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else if (Token::simpleMatch(tok, "* 0")) {
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@ -1679,6 +1679,11 @@ private:
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" itoa(x,NULL,10);\n"
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"}");
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ASSERT_EQUALS("[test.cpp:2]: (error) Null pointer dereference\n", errout.str());
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check("void f() {\n"
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" typeof(*NULL) y;\n"
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"}", true);
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ASSERT_EQUALS("", errout.str());
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}
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void gcc_statement_expression() {
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