Bug#1030716: openldap: password/sha2 produces incorrect SHA256

[Ryan Tandy]

Thanks for the patch and info.

One additional data point: openldap 2.5.13 in bullseye-backports (gcc 
10.2.1-6) seems to be OK.

I looked briefly at the assembly with/without -fno-strict-aliasing and 
noted a difference somewhere around sha2.c:609. It doesn't look 
obviously wrong to me -- buffer is an array of uint8_t, which AFAIK 
should be aliasing-safe...

The freeze is near and I don't have time for further investigation right 
now, so for now I'm just uploading your patch (with the autopkgtest 
marked superficial). Thanks a lot for providing the patch.

Thanks
Ryan