GCC miscompiling Mesa causing issues in other software
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	smt
	Jan 7 2019, 4:48 PM

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I've been having some trouble with Godot and it turns out other people on distros like Arch reported similar stuff and they say there's an issue with Mesa - I don't know exactly what it is but there's a lot of information from other issues and bug reports, I'm wondering if this is a thing we could have fixed in Mesa? it seems other distros have done similar:

https://github.com/godotengine/godot/issues/24340#issuecomment-450727177
https://github.com/godotengine/godot/issues/23423#issuecomment-435877238
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914366
https://bodhi.fedoraproject.org/updates/FEDORA-2018-bcdb732491

Currently at least for me Godot will often freeze up and I'm sure there's impacts in other programs too, I wish I could be more specific but I don't know exactly what the issue is unfortunately, just that it seems to be with Mesa

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smt created this task.Jan 7 2019, 4:48 PM

Herald added a project: Lacks Project. · View Herald TranscriptJan 7 2019, 4:48 PM

Alexander88207 added a subscriber: Alexander88207.Jan 7 2019, 8:38 PM

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if i understood it right, it's mesa? and why doesn't anyone report it to mesa?

I have no idea, I tried to read through all the issues and reports in other distros and I'm still not sure what exactly the issue is, but it seems like all of the distros found some way to fix whatever is causing it, I've tried finding other places it's an issue in but the only one that's consistent for me is Godot freezing up

Just try to submit the bug here

ah I wasn't sure if that was the right place, it seems like it is and I found someone else submitting it there too (https://bugs.freedesktop.org/show_bug.cgi?id=109229) if it's not a distro thing I suppose I can close this, was just confused seeing so many distros get fixes out for it

They fixed by reverting Mesa to an older release. Subsequent releases of Mesa were reported to function with Godot, your issue is likely elsewhere seeing as we're on the 18.3.1

The issue is GCC breaking Mesa, according to the bug reports, this commit fixes it.

https://github.com/gcc-mirror/gcc/commit/5e0169b96bd4dad2c998f79d09e5dff07fb41e9a

Will need to be moved to git

• sunnyflunk renamed this task from Mesa causing issues in other software to GCC miscompiling Mesa causing issues in other software.Jan 7 2019, 9:55 PM

DataDrake triaged this task as Normal priority.Jan 20 2019, 1:41 PM

DataDrake moved this task from Backlog to Package Fixes on the Software board.

I think this can be closed. The commit linked by @sunnyflunk is dated November 2018, while our current GCC version is from February 2019, thus it should include the fix.

• sunnyflunk closed this task as Resolved.Jul 1 2019, 11:31 PM

• sunnyflunk claimed this task.

GCC miscompiling Mesa causing issues in other softwareClosed, ResolvedPublicActions

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GCC miscompiling Mesa causing issues in other software
Closed, ResolvedPublic
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