https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105240
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- I thought it would be OK to just use the malloc configuration unconditionally within libstdc++, but it looks like I need to include the configure checks for mman.h and use mmap whenever possible. It might even be better to disable the std::stacktrace feature entirely if mmap isn't available, so we don't get these malloc leaks.
