https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96217
--- Comment #9 from LE GARREC Vincent <legarrec.vincent at gmail dot com> --- For the record : the bug I opened in glibc bugzilla : https://sourceware.org/bugzilla/show_bug.cgi?id=26260 Like gcc, glibc doesn't supports -O0