[Webkit-unassigned] [Bug 230318] REGRESSION(r282220): [GCC] Several flaky crashes on media/track/cue tests

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230318

Carlos Alberto Lopez Perez <clopez at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|REGRESSION(r282220):        |REGRESSION(r282220): [GCC]
                   |[GTK][WPE] Several flaky    |Several flaky crashes on
                   |crashes on media/track/cue  |media/track/cue tests
                   |tests                       |

--- Comment #2 from Carlos Alberto Lopez Perez <clopez at igalia.com> ---
(In reply to Carlos Alberto Lopez Perez from comment #0)
> 
> What intrigues me is that this tests are not crashing on the Debug bots,
> only on the Release ones.
> I wonder if the crash may be caused by some optimization that GCC does and
> Clang doesn't. I will try to check this further later.

Confirmed.

Tested to build:

 1. WebKitGTK Release at r282220 with GCC 10.2.0  (flatpak SDK)
 2. WebKitGTK Debug at r282220 with GCC 10.2.0  (flatpak SDK)
 3. WebKitGTK Release at r282220 with Clang 11.1.0 (flatpak SDK)


The crash is only reproducible with 1. (GCC+Release). With Clang or GCC Debug (no optimizations) the crash is not reproducible.

So this is either undefined behaviour on the code or a bug in GCC

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20210916/e8a90844/attachment.htm>