Memory leak : Added check "Using resource after it has been released"
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@ -1088,11 +1088,26 @@ void CheckMemoryLeakClass::CheckMemoryLeak_CheckScope( const TOKEN *Tok1, const
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AllocType alloctype = No;
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AllocType dealloctype = No;
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const TOKEN *result;
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TOKEN *tok = getcode( Tok1, callstack, varname, alloctype, dealloctype );
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// tok->printOut( "getcode result" );
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//tok->printOut( "getcode result" );
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// Simplify the code and check if freed memory is used..
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for ( TOKEN *tok2 = tok; tok2; tok2 = tok2->next() )
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{
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while ( TOKEN::Match(tok2, "[;{}] ;") )
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erase(tok2, tok2->tokAt(2));
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}
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if ( (result = TOKEN::findmatch(tok, "dealloc [;{}] use ;")) != NULL )
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{
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std::ostringstream errmsg;
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errmsg << _tokenizer->fileLine(result->tokAt(2)) << ": Using \"" << varname << "\" after it has been deallocated / released";
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_errorLogger->reportErr( errmsg.str() );
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}
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simplifycode( tok );
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// tok->printOut( "simplifycode result" );
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//tok->printOut( "simplifycode result" );
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// If the variable is not allocated at all => no memory leak
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if (TOKEN::findmatch(tok, "alloc") == 0)
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@ -1108,7 +1123,6 @@ void CheckMemoryLeakClass::CheckMemoryLeak_CheckScope( const TOKEN *Tok1, const
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return;
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}
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const TOKEN *result;
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if ( (result = TOKEN::findmatch(tok, "loop alloc ;")) != NULL )
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{
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MemoryLeak(result, varname, alloctype);
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@ -151,6 +151,8 @@ private:
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// TODO TEST_CASE( structmember1 );
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TEST_CASE( dealloc_use_1 ); // Deallocate and then use memory
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}
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@ -1361,6 +1363,21 @@ private:
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ASSERT_EQUALS( std::string("[test.cpp:5]: Memory leak: abc.a\n"), errout.str() );
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}
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void dealloc_use_1()
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{
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check( "void f()\n"
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"{\n"
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" char *s = new char[100];\n"
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" delete [] s;\n"
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" p = s;\n"
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"}\n" );
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ASSERT_EQUALS( std::string("[test.cpp:5]: Using \"s\" after it has been deallocated / released\n"), errout.str() );
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}
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};
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REGISTER_TEST( TestMemleak )
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