https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94600
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Hans-Peter Nilsson <h...@gcc.gnu.org>: https://gcc.gnu.org/g:a4aca1edaf37d43b2b7e9111825837a7a317b1b0 commit r11-2045-ga4aca1edaf37d43b2b7e9111825837a7a317b1b0 Author: Hans-Peter Nilsson <h...@axis.com> Date: Sun Jul 5 20:50:52 2020 +0200 PR94600: fix volatile access to the whole of a compound object. The store to the whole of each volatile object was picked apart like there had been an individual assignment to each of the fields. Reads were added as part of that; see PR for details. The reads from volatile memory were a clear bug; individual stores questionable. A separate patch clarifies the docs. gcc: 2020-07-09 Richard Biener <rguent...@suse.de> PR middle-end/94600 * expr.c (expand_constructor): Make a temporary also if we're storing to volatile memory. gcc/testsuite: 2020-07-09 Hans-Peter Nilsson <h...@axis.com> PR middle-end/94600 * gcc.dg/pr94600-1.c, gcc.dg/pr94600-2.c, gcc.dg/pr94600-3.c, gcc.dg/pr94600-4.c, gcc.dg/pr94600-5.c, gcc.dg/pr94600-6.c, gcc.dg/pr94600-7.c, gcc.dg/pr94600-8.c: New tests.
