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TestMemleak: fixed problems with wrong linenumbers. This fixes ticket 79

This commit is contained in:
Daniel Marjamäki 2009-02-07 09:44:57 +00:00
parent e985b7970d
commit bb71f9e83e
2 changed files with 35 additions and 21 deletions
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19
src/checkmemoryleak.cpp
View File

@ -384,14 +384,14 @@ Token *CheckMemoryLeakClass::getcode(const Token *tok, std::list<const Token *>
if (parlevel == 0 && tok->str() == ";")
addtoken(";");
if (Token::Match(tok, std::string("[(;{}] " + varnameStr + " =").c_str()))
if (Token::Match(tok->previous(), std::string("[(;{}] " + varnameStr + " =").c_str()))
{
AllocType alloc = GetAllocationType(tok->tokAt(3));
AllocType alloc = GetAllocationType(tok->tokAt(2));
bool realloc = false;
if (alloc == No)
{
alloc = GetReallocationType(tok->tokAt(3));
alloc = GetReallocationType(tok->tokAt(2));
if (alloc != No)
{
addtoken("realloc");
@ -403,9 +403,9 @@ Token *CheckMemoryLeakClass::getcode(const Token *tok, std::list<const Token *>
// If "--all" hasn't been given, don't check classes..
if (alloc == New)
{
if (Token::Match(tok->tokAt(3), "new %type% [(;]"))
if (Token::Match(tok->tokAt(2), "new %type% [(;]"))
{
if (isclass(tok->tokAt(4)))
if (isclass(tok->tokAt(3)))
{
if (_settings._showAll)
all = true;
@ -433,7 +433,7 @@ Token *CheckMemoryLeakClass::getcode(const Token *tok, std::list<const Token *>
alloctype = alloc;
}
else if (MatchFunctionsThatReturnArg(tok, std::string(varname)))
else if (MatchFunctionsThatReturnArg(tok->previous(), std::string(varname)))
{
addtoken("use");
}
@ -1029,10 +1029,11 @@ void CheckMemoryLeakClass::simplifycode(Token *tok)
done = false;
}
// Reduce "[;{}] alloc ; dealloc ; !!dealloc" => "[;{}]"
if (Token::Match(tok2, "[;{}] alloc ; dealloc ; !!dealloc"))
// malloc - realloc => alloc ; dealloc ; alloc ;
// Reduce "[;{}] alloc ; dealloc ; alloc ;" => "[;{}] alloc ;"
if (Token::Match(tok2, "[;{}] alloc ; dealloc ; alloc ;"))
{
erase(tok2, tok2->tokAt(5));
erase(tok2->next(), tok2->tokAt(6));
done = false;
}

37
test/testmemleak.cpp
View File

@ -71,6 +71,8 @@ private:
TEST_CASE(simple9); // Bug 2435468 - member function "free"
TEST_CASE(simple10); // fclose in a if condition
TEST_CASE(alloc_alloc_1);
TEST_CASE(use1);
TEST_CASE(use2);
@ -300,6 +302,20 @@ private:
void alloc_alloc_1()
{
check("void foo()\n"
"{\n"
" char *str;\n"
" str = new char[10];\n"
" str = new char[20];\n"
" delete [] str;\n"
"}\n");
ASSERT_EQUALS(std::string("[test.cpp:5]: (error) Memory leak: str\n"), errout.str());
}
@ -840,7 +856,7 @@ private:
" while (!str);\n"
" return str;\n"
"}\n");
ASSERT_EQUALS(std::string("[test.cpp:5]: (error) Memory leak: str\n"), errout.str());
ASSERT_EQUALS(std::string("[test.cpp:6]: (error) Memory leak: str\n"), errout.str());
}
@ -1013,7 +1029,7 @@ private:
" }\n"
" delete [] p;\n"
"}\n", false);
ASSERT_EQUALS(std::string("[test.cpp:6]: (error) Mismatching allocation and deallocation: p\n"), errout.str());
ASSERT_EQUALS(std::string("[test.cpp:7]: (error) Mismatching allocation and deallocation: p\n"), errout.str());
}
@ -1522,7 +1538,6 @@ private:
" char *a = (char *)malloc(10);\n"
" a = realloc(a, 100);\n"
"}\n");
ASSERT_EQUALS(std::string("[test.cpp:5]: (error) Memory leak: a\n"), errout.str());
}
@ -1548,7 +1563,7 @@ private:
" free(a);\n"
"}\n");
ASSERT_EQUALS(std::string("[test.cpp:3]: (error) Memory leak: a\n"), errout.str());
ASSERT_EQUALS(std::string("[test.cpp:4]: (error) Memory leak: a\n"), errout.str());
check("void foo()\n"
"{\n"
@ -1764,15 +1779,13 @@ private:
void strcat_result_assignment()
{
check("#include <stdlib.h>\n"
"#include <string.h>\n"
"int main()\n"
check("void foo()\n"
"{\n"
"char *p = malloc(10);\n"
"p[0] = 0;\n"
"p = strcat( p, \"a\" );\n"
"free( p );\n"
"return 0;\n"
" char *p = malloc(10);\n"
" p[0] = 0;\n"
" p = strcat( p, \"a\" );\n"
" free( p );\n"
" return 0;\n"
"}");
ASSERT_EQUALS(std::string(""), errout.str());
}