https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109031
--- Comment #21 from Martin Liška <marxin at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #20) > Well, cvise reduction of runtime testcases is always problematic, and trying > to ensure > the reduction doesn't introduce uninitialized var uses which weren't there > before (perhaps with checking for new -Wmaybe-uninitialized -Wuninitialized > warnings or even all -Wall -W warnings; or perhaps with > -ftrivial-var-init=something) as well as using some timeout on the execution > because the execution could very well loop forever is minimum what needs to > be done. Yes, one can mitigate that with -fsanitize=undefined,address, I used that time to time for csmith test-cases.