cmake/nc_sanitizer.cmake

option (SANITIZER "enable sanitizers" OFF)

if (SANITIZER)
    append_compile_flag("-fsanitize=undefined")
    append_compile_flag("-fsanitize=address")
    append_compile_flag("-fsanitize=leak")

    append_compile_flag("--param max-gcse-memory=167772160")

    # Don't enable pointer-compare as https://github.com/google/sanitizers/issues/1324
    # states it isn't production-ready and it results in some link errors under (at least) gcc-11.3
    #   eg, undefined reference to 'std::__cxx11::basic_stringbuf<char, std::char_traits<char>, std::allocator<char> >::_M_high_mark()
    # See also: https://github.com/cms-sw/cmssw/issues/36480
    #
    #append_compile_flag("-fsanitize=pointer-compare")
    append_compile_flag("-fsanitize=pointer-subtract")

    add_definitions("-D_GLIBCXX_SANITIZE_VECTOR")
endif()