https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98378
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:9032d2b2414ed22e53a9980a51b835d3caf83c48 commit r11-6269-g9032d2b2414ed22e53a9980a51b835d3caf83c48 Author: Jakub Jelinek <ja...@redhat.com> Date: Sat Dec 19 12:46:40 2020 +0100 bswap: Fix up a thinko with empty CONSTRUCTORs [PR98378] The code I've added recently in find_bswap_or_nop for VECTOR CONSTRUCTORs is missing punt on an important case - namely empty CONSTRUCTORs, because in that case the loop will not initialize *n and the code after the loop will then use the uninitialized structure. 2020-12-19 Jakub Jelinek <ja...@redhat.com> PR tree-optimization/98378 * gimple-ssa-store-merging.c (find_bswap_or_nop): Punt if CONSTRUCTOR has no elements.
