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Re: [PATCH] Add testcase for PR83252 (was Re: patch to fix PR80818)
- From: Jakub Jelinek <jakub at redhat dot com>
- To: Vladimir Makarov <vmakarov at redhat dot com>, Segher Boessenkool <segher at kernel dot crashing dot org>
- Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 5 Dec 2017 13:49:55 +0100
- Subject: Re: [PATCH] Add testcase for PR83252 (was Re: patch to fix PR80818)
- Authentication-results: sourceware.org; auth=none
- References: <c5cb9cb6-be94-2472-563c-e3234c7bfb70@redhat.com> <20171204105201.GM2353@tucnak>
- Reply-to: Jakub Jelinek <jakub at redhat dot com>
On Mon, Dec 04, 2017 at 11:52:01AM +0100, Jakub Jelinek wrote:
> On Wed, Nov 29, 2017 at 05:21:22PM -0500, Vladimir Makarov wrote:
> > The following patch fixes
> >
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80818
> >
> > The patch was successfully tested and bootstrapped on x86_64. The patch
> > has no test because it is hard to check the problem. I checked manually
>
> This changed fixed PR83252 which has a reasonably small testcase.
> I've further reduced it using creduce (with -O0 -W{,maybe-}uninitialized
> and/or -fsanitize=undefined checking, plus test that it succeeds with
> r255258 and fails with r255257). Can you please double check if the
> testcase represents the same issue you were working on or if your change
> merely made the bug latent again?
Unfortunately, it broke again with r255377. Vladimir, could you please have
a look at this PR?
Jakub