https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104449
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:f5b1fcfd69c7a09f661ebec1341f3df34aec4ead commit r10-10679-gf5b1fcfd69c7a09f661ebec1341f3df34aec4ead Author: Jakub Jelinek <ja...@redhat.com> Date: Sat Feb 12 19:17:44 2022 +0100 asan: Fix up address sanitizer instrumentation of __builtin_alloca* if it can throw [PR104449] With -fstack-check* __builtin_alloca* can throw and the asan instrumentation of this builtin wasn't prepared for that case. The following patch fixes that by replacing the builtin with the replacement builtin and emitting any further insns on the fallthru edge. I haven't touched the hwasan code which most likely suffers from the same problem. 2022-02-12 Jakub Jelinek <ja...@redhat.com> PR sanitizer/104449 * asan.c: Include tree-eh.h. (handle_builtin_alloca): Handle the case when __builtin_alloca or __builtin_alloca_with_align can throw. * gcc.dg/asan/pr104449.c: New test. * g++.dg/asan/pr104449.C: New test. (cherry picked from commit f0c7367b8802c47efaad87b1f2126fe6350d8b47)
