VSE: BLI_assert fails while rendering strip with changed font #75822
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Reference: blender/blender#75822
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System Information
Operating system: Windows-10-10.0.14393-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.19
Blender Version
Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-04-17 09:30, hash:
40d90456ea
Worked: unknown
Short description of error
On Windows VSE fails the
BLI_assert(BLI_thread_is_main())
assert atBKE_sequencer_text_font_load
when trying to render a sequence with a text strip that has it's font changed. Debug build will crash, release build will ignore the assert and continue without any issues. Not sure if this is a bug orBLI_assert
s are somehow optional.Exact steps for others to reproduce the error
Result: Debug build will crash, release build will ignore the assert and work fine.
Stack Trace (ucrtbased.dll thread)
Added subscriber: @VincentBlankfield
Added subscribers: @iss, @mano-wii
Changed status from 'Needs Triage' to: 'Confirmed'
I can confirm.
The assert was introduced in
b3dbe176
Added subscriber: @F0Burny
This comment was removed by @F0Burny
This has nothing to do with this report.
Please submit new report if you want to report bug https://developer.blender.org/maniphest/task/edit/form/2/
Added subscriber: @ao2
FYI the original bug about text strips can be reproduced with the blender 2.82.a binary shipped in Debian unstable:
I will report on the Debian bug tracker too, but maybe this is enough to bring the priority back to high here?
I can attach a minimal reproducing .blend if necessary, but other devs may not have the same fonts as me.
Thanks, Antonio
I don't think you need to report this to Debian tracker. it's Blender bug and it's being handled here already.
Unless this is crashing regular release (not debug) builds, I don't see reason to increase priority.
I intended to post to Debian tracker to ask two things:
Does that make sense?
Thanks, Antonio
Added subscriber: @Sergey
I am not sure if they would be able to answer this though. Perhaps it would be better asking our platform maintainer - assert shouldn't crash non-debug build AFAIK. I am not able to test this really unfortunately, but this may be bug on it's own. Can you bring some light on this @Sergey?
I am not sure how this would work as well. There are number of fixes daily, many of them "more important" than this fix would be.
In any case if this is in scope of Debian bugtracker go ahead.
Looking at the build logs - [x] it seems that the dh builder script passed build type of None. This makes it so release-specific flags are not appended to the common
CFLAGS
, resulting toNDEBUG
not defined, which makesasserts()
to run. Please submit this issue to the Debian BTS.Thank you for the initial investigation @sergey.
I filed the Debian report with a little more background and asked for the opinion of the Debian maintainer:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962074