https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79399
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Ah, ok then. Note that e.g. vectors use unsigned int for length, so as long as you need more than 4G elements in any vector, the game is over, but probably testcase of this size doesn't reach that even close. Anyway, thanks for the report. Can you try yourself with the #c3 patch?