[PATCH] Fortran: improve checks of NULL without MOLD as actual argument [PR104819]

[Jerry D]

On 2/29/24 12:56 PM, Harald Anlauf wrote:
> Dear all,
> 
> here's a first patch addressing issues with NULL as actual argument:
> if the dummy is assumed-rank or assumed length, MOLD shall be present.
> 
> There is also an interp on interoperability of c_sizeof and NULL
> pointers, for which we have a partially incorrect testcase
> (gfortran.dg/pr101329.f90) which gets fixed.
> 
> See https://j3-fortran.org/doc/year/22/22-101r1.txt for more.
> 
> Furthermore, nested NULL()s are now handled.
> 
> Regtested on x86_64-pc-linux-gnu.  OK for mainline?
> 
> I consider this part as safe and would like to backport to 13-branch.
> Objections?
> 
> Thanks,
> Harald
> 
Looks good to me. I think backport is OK as well.

Jerry -