https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96722
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <[email protected]>: https://gcc.gnu.org/g:a5b15fcb954ba63d58f0daa700281aba33b5f24a commit r11-2840-ga5b15fcb954ba63d58f0daa700281aba33b5f24a Author: Jakub Jelinek <[email protected]> Date: Tue Aug 25 13:49:40 2020 +0200 gimple: Ignore *0 = {CLOBBER} in path isolation [PR96722] Clobbers of MEM_REF with NULL address are just fancy nops, something we just ignore and don't emit any code for it (ditto for other clobbers), they just mark end of life on something, so we shouldn't infer from those that there is some UB. 2020-08-25 Jakub Jelinek <[email protected]> PR tree-optimization/96722 * gimple.c (infer_nonnull_range): Formatting fix. (infer_nonnull_range_by_dereference): Return false for clobber stmts. * g++.dg/opt/pr96722.C: New test.
