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Fixed #2633 (False positive: Memory leak for tree node)

This commit is contained in:
Daniel Marjamäki 2011-03-07 20:17:52 +01:00
parent d678e4424c
commit 8e571c04e4
2 changed files with 44 additions and 4 deletions
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16
lib/checkmemoryleak.cpp
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@ -75,10 +75,18 @@ bool CheckMemoryLeak::isclass(const Tokenizer *_tokenizer, const Token *tok) con
if (tok->isStandardType())
return false;
std::ostringstream pattern;
pattern << "struct " << tok->str();
if (Token::findmatch(_tokenizer->tokens(), pattern.str().c_str()))
return false;
// return false if the type is a simple struct without member functions
const std::string pattern("struct " + tok->str() + " {");
const Token *tok2 = Token::findmatch(_tokenizer->tokens(), pattern.c_str());
if (tok2)
{
while (tok2 && tok2->str() != "}" && tok2->str() != "(")
tok2 = tok2->next();
// Simple struct => return false
if (tok2 && tok2->str() == "}")
return false;
}
return true;
}

32
test/testmemleak.cpp
View File

@ -285,6 +285,7 @@ private:
// detect leak in class member function..
TEST_CASE(class1);
TEST_CASE(class2);
TEST_CASE(autoptr1);
TEST_CASE(if_with_and);
@ -2518,6 +2519,37 @@ private:
ASSERT_EQUALS("[test.cpp:7]: (error) Memory leak: p\n", errout.str());
}
void class2()
{
check("class Fred {\n"
"public:\n"
" Fred() : rootNode(0) {}\n"
"\n"
"private:\n"
" struct Node {\n"
" Node(Node* p) {\n"
" parent = p;\n"
" if (parent) {\n"
" parent->children.append(this);\n"
" }\n"
" }\n"
"\n"
" ~Node() {\n"
" qDeleteAll(children);\n"
" }\n"
"\n"
" QList<Node*> children;\n"
" };\n"
"\n"
" Node rootNode;\n"
"\n"
" void f() {\n"
" Node* recordNode = new Node(&rootNode);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void autoptr1()
{