[OpenBLAS] add new patch to fix zdot crash

[inkydragon]

xref: JuliaLang/julia#42397

Things to discuss: Whether the patch needs to be ported to an older version.

[staticfloat]

Thanks @inkydragon! Can you just try symlinking these patches over into the 0.3.12 directories as well? It sounds like this patch is already present in 0.3.13, so no need to patch there, right?

[inkydragon]

Can you just try symlinking these patches over into the 0.3.12 directories as well?

Oh, that was a mistake on my part. I had already confirmed that v0.3.12 did not have this issue when I git bisected it.
40963#issuecomment
The description in JuliaLang/julia#42397 has also been updated.

Now I've made further confirmation.

• After a quick git checkout test, v0.3.12 already contains this patch.

  git clone https://github.com/xianyi/OpenBLAS.git
  git checkout v0.3.12
  git status
  git cherry-pick b2053239fc3

• A local build v0.3.12 DLL compiled with Cygwin do not have this issue.
• Tests on the released v0.3.12 (OpenBLAS_jll.jl-v0.3.12+0) show no bugs

It sounds like this patch is already present in 0.3.13, so no need to patch there, right?

Yes.
You can confirm this by testing the DLL directly. OpenBLAS_jll.jl-v0.3.13+8

inky: Whether the patch needs to be ported to an older version.

What I mean is: do we need to apply patch to versions before 0.3.10. For example 0.3.9.

The ccall test shows:

• 0.3.5 Works fine
• 0.3.7 Works fine
• 0.3.9 Has this issue

[ViralBShah]

We definitely need it for 0.3.10 which is what ships with Julia 1.6 (which is likely to be the new LTS). I wouldn't worry about anything older.

[vchuravy]

Let's land this and we can add it to 0.3.9 when needed