Trying to start Darktable (https://www.darktable.org/, with OpenCL forcibly enabled through opencl_disable_drivers_blacklist=true in .config/darktable/darktablerc since it’s now blacklisted) results in segfault. There is a report at https://bugs.archlinux.org/task/54399, and another at https://bugzilla.redhat.com/show_bug.cgi?id=1460400#c10, both provide backtraces. Please tell if you need more infos, trying more debugging steps, etc.
This bug goes away when compiling Beignet 1.3.1 with LLVM 3.9 (I was testing with 1.3.1 + LLVM 4.0 before). I cannot test it under Beignet 1.3.2 compiled with either LLVM 3.9 or LLVM 5.0 because I get this instead: Beignet: self-test failed: (3, 7, 5) + (5, 7, 3) returned (6, 7, 5) See README.md or http://www.freedesktop.org/wiki/Software/Beignet/ Beignet: disabling non-working device
The "self-test failed" message in 1.3.2 is probably https://bugs.freedesktop.org/show_bug.cgi?id=102137 - see there for a fix.
Adding this fix results in Darktable crashing again…
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