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The option --leak-check-heuristics=heur1,heur2,... can activate various heuristics to decrease the number of false positive "possible leaks" for C++ code. The available heuristics are detecting valid interior pointers to std::stdstring, to new[] allocated arrays with elements having destructors and to interior pointers pointing to an inner part of a C++ object using multiple inheritance. This fixes 280271 Valgrind reports possible memory leaks on still-reachable std::string This has been tested on x86/amd64/ppc32/ppc64. First performance measurements seems to show a neglectible impact on the leak search. More feedback welcome both on performance and functional aspects (false positive 'possibly leaked' rate decrease and/or false negative 'possibly leaked' rate increase). Note that the heuristic is not checking that the memory has been allocated with "new" or "new[]", as it is expected that in some cases, specific alloc fn are used for c++ objects instead of the standard new/new[]. If needed, we might add an option to check the alloc functions to be new/new[]. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13582
3 lines
117 B
Plaintext
3 lines
117 B
Plaintext
prog: leak_cpp_interior
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vgopts: --leak-check=summary --leak-check-heuristics=multipleinheritance,stdstring,newarray
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