https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105600
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >One issue is it seems like I can't find a way to keep all the temporary files >required. -save-temps is the best option there. Also see https://gcc.gnu.org/wiki/A_guide_to_testcase_reduction#Reducing_LTO_bugs for maybe better help of reducing the testcase.