[Bug 94478] Steam now segfaults with self built Mesa (used to work)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94478

            Bug ID: 94478
           Summary: Steam now segfaults with self built Mesa (used to
                    work)
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: sheepdestroyer at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

On fedora 23 64b, Intel HD3000 (SNB)

I used to be able to run Steam on my self built i686 git Mesa driver, but not
recently (few months).

I tried to build the simplest Mesa with default options, copying those of
official Fedora (copied from koji, is there a better way?), then about any mix
of FLAGS and arguments.

Steam runs on official Fedora Mesa builds but not on self built one anymore.
Reinstalling distro drivers does permit to run Steam again.

It's not a generic pb with my build config though, as any other i686 GL apps
run just fine.

What is the best way to compile an equivalent Mesa to the one available in
repo?
What changed in Fedora that self built drivers (with default options) used to
work but not anymore?

https://github.com/ValveSoftware/steam-for-linux/issues/4350
https://bugzilla.redhat.com/show_bug.cgi?id=1316505

---------------------------------------

[sheepdestroyer at sheepora ~] $ steam
Running Steam on fedora 23 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(1457571406)
Installing breakpad exception handler for appid(steam)/version(1457571406)
Installing breakpad exception handler for appid(steam)/version(1457571406)
assert_20160310200202_1.dmp[22400]: Uploading dump (out-of-process)
/tmp/dumps/assert_20160310200202_1.dmp
/home/sheepdestroyer/.local/share/Steam/steam.sh: line 756: 22394 Segmentation
fault      (core dumped) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
assert_20160310200202_1.dmp[22400]: Finished uploading minidump
(out-of-process): success = yes
assert_20160310200202_1.dmp[22400]: response:
CrashID=bp-9f7860f2-0a2f-4c4a-90e3-0ce112160310
assert_20160310200202_1.dmp[22400]: file
''/tmp/dumps/assert_20160310200202_1.dmp'', upload yes:
''CrashID=bp-9f7860f2-0a2f-4c4a-90e3-0ce112160310''
[sheepdestroyer at sheepora ~] $

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