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Re: [Patch, Fortran] PR35203 - reject dummies with VALUE + OPTIONAL


Tobias Burnus wrote:
Having a dummy which has VALUE and OPTIONAL attribute does not work in
gfortran, but is valid Fortran 9x/200x; to be more precise: One cannot
distinguish an absent argument (argument == NULL) from an argument
of value 0 (argument == 0). Without VALUE this is easy: arg == NULL
vs. *arg == 0.

One has therefore to do the same as for character variables: A hidden
argument needs to be passed.

This patch takes the simple route by simply rejecting such dummies.

OK for the trunk?

Please don't use gfc_error for shortcomings in the compiler. ICEing or gfc_internal_error is much more appropriate for something where the compiler is at fault.


- Tobi


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