[Patch, Fortran] PR fortran/45776: More variable definition checks

[Daniel Kraft]

And another update.  The last patch segfaulted for INQUIRE with 
transfers, because in this case code->ext.dt was NULL.  I added a check 
for that, since this is also not "reading".  Changed is only the 
resolve_transfer part (and I regard the change as trivial).

Starting a new regtest now ;)  Ok if successful?

Yours,
Daniel

Daniel Kraft wrote:
> Here's an updated patch with the suggestions and IRC discussion 
> incorporated -- earlier than I expected, but anyways ;)
> 
> What do you think about the new solution?  I will run a fresh regtest 
> tomorrow, but at least the io_*, write_*, read_* and namelist_* tests 
> seem to pass.  Ok?
> 
> Yours,
> Daniel
> 
> Daniel Kraft wrote:
>> Hi,
>>
>> the attached patch implements the missing IO related variable 
>> definition checks (which is now PR 45776).  Except the LOCK/UNLOCK 
>> cases which can not yet be implemented because locks are not yet in 
>> gfortran, the full list of variable definition contexts of F2008, 
>> 16.6.7 should be implemented with that.
>>
>> It fixes some accepts-invalid cases that my last patch created, but 
>> also adds some checks that were missing before it.  As a bonus, it 
>> adds a F2008 check when using NEWUNIT (which was missing before).
>>
>> As I'm not really familiar with the IO related data-structures, I left 
>> two XXX comments in the patch asking for possible better solutions 
>> (when they exist), please take a look at them.
>>
>> Regression testing on GNU/Linux-x86-32.  Ok for trunk if no failures?
> 
> 


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