Direct and indirect memory leaks

[Alan Garny]

Hi @fbergmann,

I have a very simple piece of code to check whether a file is a COMBINE archive:

bool isCombineArchive(const std::string &pFileName)
{
    // Try to retrieve a COMBINE archive.

    auto combineArchive = libcombine::CombineArchive();
    auto res = combineArchive.initializeFromArchive(pFileName);

    if (res) {
        combineArchive.cleanUp();
    }

    return res;
}

It works as expected, but... it leaks memory. Here is a summary of the different traces that I am getting:

operator new(unsigned long)
zipper::Unzipper::Unzipper(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (unzipper.cpp:488)
libcombine::CombineArchive::initializeFromArchive(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) (combinearchive.cpp:62)



operator new(unsigned long)
zipper::Unzipper::Unzipper(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (unzipper.cpp:492)
libcombine::CombineArchive::initializeFromArchive(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) (combinearchive.cpp:62)



operator new(unsigned long)
zipper::Unzipper::Unzipper(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (unzipper.cpp:487)
libcombine::CombineArchive::initializeFromArchive(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) (combinearchive.cpp:62)



operator new(unsigned long)
libcombine::CaListOfContents::createObject(libsbml::XMLInputStream&) (CaListOfContents.cpp:309)
libcombine::CaOmexManifest::createObject(libsbml::XMLInputStream&) (CaOmexManifest.cpp:477)
libcombine::CaBase::read(libsbml::XMLInputStream&) (CaBase.cpp:2242)
libcombine::CaReader::readInternal(char const*, bool) (CaReader.cpp:228)
libcombine::CaReader::readOMEXFromString(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (CaReader.cpp:135)
readOMEXFromString (CaReader.cpp:376)
libcombine::CombineArchive::initializeFromArchive(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) (combinearchive.cpp:89)

As you can tell, the last trace refers to a memory leak in libCombine itself while the others to memory leaks in zipper. I checked the official zipper and it looks like the memory leaks have been fixed. So, it ought to be as simple as upgrading your version of zipper? (I wanted to create an issue at https://github.com/fbergmann/zipper, but I can't...?!)

I am just getting started with libCombine and I am going to ignore whatever memory leaks it generates. Still, it would be nice to have them fixed, if possible.

Cheers, Alan.

[Frank Bergmann]

i've created a new release that should have resolved the issue. thanks for letting me know

[Alan Garny]

Thanks @fbergmann, I can confirm that the memory leaks are now gone. Feel free to close this issue.

[Frank Bergmann]

thank you again