[Patch, fortran] PR25098 - Variable as actual argument for procedure dummy argument allowed

[Paul Thomas]

tobi,

>> The detection of the error is effected in interface.c.  If the actual
>> argument is a variable and the formal argument flavor is procedure, the
>> only way in which this cannot be an error is if the procedure is
>> already compiled but not declared in the current namespace.  This is
>
>
> Can you add a comment indicating where this is found in the 
> standard?   I find this quite surprising, and couldn't find it while 
> looking  briefly.

I realise that I am uncertain about which part you could not find in the 
standard. 12.4.1.2 deals with actual arguments associated with dummy 
procedures.  It, of course, requires that a dummy procedure is 
associated with an actual procedure, which has to be the specific name 
of an external, module, dummy or intrinsic procedure.  A gsym, 
identifies the specific name of an external procedure.  I guess that the 
point you are making is that this is not mandated by the standard?

> I think it would be cleaner if you issue the error in  
> compare_parameter (passing it the locus).
>
I have attached a new version of the patch that is reorganised, as you 
suggest; it looks tidier than I anticipated!

It regtests on FC5/Athlon1700. OK for trunk and, when the time is ripe, 4.1?

Thanks

Paul
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