https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107561
--- Comment #25 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:04b0a7b1a6d9e0f3782888f1ebf187c26690038b commit r13-6943-g04b0a7b1a6d9e0f3782888f1ebf187c26690038b Author: Richard Biener <rguent...@suse.de> Date: Wed Mar 29 13:49:24 2023 +0200 tree-optimization/107561 - reduce -Wstringop-overflow false positives The following tells pointer-query to prefer a zero size when we are querying for the size range for a write into an object we've determined is of zero size. That avoids diagnostics about really varying size arguments that just get a meaningful range for example because they are multiplied by an element size. I've adjusted only one call to get_size_range since that's what I have a testcase for. PR tree-optimization/107561 * gimple-ssa-warn-access.cc (get_size_range): Add flags argument and pass it on. (check_access): When querying for the size range pass SR_ALLOW_ZERO when the known destination size is zero. * g++.dg/pr71488.C: Remove XFAILed bogus diagnostic again. * g++.dg/warn/Warray-bounds-16.C: Likewise.
