There's a merged pull request on the void-packages repository

gcc: backport omp false positive fix
https://github.com/void-linux/void-packages/pull/16166

Description:
This fixes gcc not marking constants emitted into assembly as shared which would result in strange build errors such as:

```
$ gcc -fopenmp test-openmp.c
test-openmp.c: In function ‘testfunc’:
test-openmp.c:10:15: error: ‘*.LC0’ not specified in enclosing ‘parallel’
   10 |         float k[3] = { 0.1f, 0.1f, 0.1f } ;
      |               ^
test-openmp.c:7:9: error: enclosing ‘parallel’
    7 | #pragma omp parallel for default(none) shared(f)
      |         ^~~
```

This happens only sometimes and not on all platforms and seems to mostly come down to luck.

Not bumping crosstoolchains for now, as that would be too intensive on the builders right now. If we encounter this somewhere we should bump cross as well.