https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61071
--- Comment #5 from Krzysztof Kundzicz <athantor+gccbugzilla at athi dot pl> --- (In reply to Johannes Altmanninger from comment #4) > I can't reproduce this on Arch Linux, perhaps it is fixed by now? > > Linux 5.2.2 > gcc 9.1.0 > gdb 8.3 > glibc 2.29 > binutils 2.32 Just increase the `t` array size to 63 and and it's broken again. Same setup, newer kernel.