Unfortunately, there isn't much we can do from our side. Blender 2.79 has lots of optimizations and new features on OpenCL for AMD which requires decent compiler support. OpenCL compiler for older cards has some bugs which we can not resolve from our side, and AMD is not supporting compilers for older cards anymore.

Indeed same issues, will merge

Ummmm, ya, this is a bad thing....

I have a reproductible crash with fewer steps.
Create a particle system on default cube.
Change amount to 10 000.
Switch emit source to verts. -> crash

In 2.79 RC2, it appears that repeating step 4 causes the origin to asymptotically move closer towards the center.

This code has not been rewritten in Blender 2.8 as far as I know, can't assume this will be automatically fixed.

I am closing this because it is basically invalid with 2.8 development.

Closing due to no reply.

possibly related to T52439

Sorry but this bug was my fault: when adding inverted matrix, I initially forgot to test them with non textured hair and either missed that common use case or made a regression afterwards. Anys, the bug seems solved (for) now.

Thanks for such urgent fixing! It`s really a joy to use Blender :)

It indeed was not a bug in the actual 2.79 RC, so no need to backport this one. Also added test for this report.

Note the Blender version in the report is not the 2.79 RC build, it's a master build where confusingly the splash screen still shows "Release Candidate". So the crash might also be due to recent changes.

Here's ASAN debug build backtrace:

thanks for fixing!
I'll try to make valid bug report next time.

bah, looks like @Sergey Sharybin (sergey) was also triaging today! :P

Please follow our submission template and guidelines and make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, small and simple .blend and/or other files to do so if needed, etc.

Seems like rB556942ec0782c5641c removed Z pass for non-render image nodes, not sure why…

dark blue, elsyiun and science lab themes are affected by rBec228090257d8b742d43d9c52e077e4a9c9a0c50
thanks

Due to rBa7a5c20fbc8d: Fix T51955: Changing Auto-IK length crashes Blender (with new-depsgraph), it was skipping the initial update when starting the transform.