https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83834
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- There's no "correct" answer, the exact form of the demangled string is somewhat arbitrary, especially for lambdas as there is no way to say that name in C++. The libstdc++ linker script clearly expected the old form, but we can adjust the script if needed.