[Patch, Fortran] PR32359 OpenMP threadprivate: SAVE is implied by explicit initialization

[Tobias Burnus]

:ADDPATCH fortran:

threadprivate requires variables which are static (C slang; Fortran:
SAVE); but sym->attr.save is only set when the SAVE attribute or
statement has been used. However, variables are also static when an
explicit initialization expression has been used. Additionally, the "
SAVE " statement was not honoured, which I almost forgot to check.

I think the reason that sym->attr.save is not set is to allow for a
"SAVE :: variable" statement afterwards.

Build and check-gfortran and check-libgomp tested on
x86_64-unknown-linux-gnu
Ok for the trunk?

Tobias
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