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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/94734] [10 Regression] Program crashes when compiled with -O2 since r10-1892-gb9ef6a2e04bfd013
Date: Fri, 24 Apr 2020 09:22:00 +0000	[thread overview]
Message-ID: <bug-94734-4-1XX6iewbmg@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-94734-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94734

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #13)
> Even better.

Note none of the committed testcases would be handled with this.  There's
also the issue of store data races (not sure if the notrap handling is
correct there, it looks like not) - for auto variables that would not
be an issue (but would need to be checked extra).  A dominating store
to the same location isn't enough to prove validity either since
that might be inside a different protected region.

  parent reply	other threads:[~2020-04-24  9:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-23 17:17 [Bug c/94734] New: Program crashes when compiled with GCC 10 john+gcc at hogberg dot online
2020-04-23 18:12 ` [Bug c/94734] " john+gcc at hogberg dot online
2020-04-23 19:19 ` [Bug tree-optimization/94734] [10 Regression] Program crashes when compiled with -O2 since r10-1892-gb9ef6a2e04bfd013 marxin at gcc dot gnu.org
2020-04-23 21:24 ` law at redhat dot com
2020-04-23 23:24 ` jakub at gcc dot gnu.org
2020-04-23 23:25 ` jakub at gcc dot gnu.org
2020-04-24  0:48 ` law at redhat dot com
2020-04-24  5:20 ` jakub at gcc dot gnu.org
2020-04-24  7:52 ` rguenth at gcc dot gnu.org
2020-04-24  7:55 ` rguenth at gcc dot gnu.org
2020-04-24  8:34 ` jakub at gcc dot gnu.org
2020-04-24  8:59 ` jakub at gcc dot gnu.org
2020-04-24  9:03 ` rguenther at suse dot de
2020-04-24  9:09 ` jakub at gcc dot gnu.org
2020-04-24  9:19 ` jakub at gcc dot gnu.org
2020-04-24  9:22 ` rguenth at gcc dot gnu.org [this message]
2020-04-24  9:29 ` jakub at gcc dot gnu.org
2020-04-24 10:37 ` jakub at gcc dot gnu.org
2020-04-24 22:10 ` cvs-commit at gcc dot gnu.org
2020-04-24 22:24 ` jakub at gcc dot gnu.org

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