[PATCH, libgfortran] PR24794 namelist input of character array

[Jerry DeLisle]

:REVIEWPATCH fortran:

Jerry DeLisle wrote:
> As a follow-on I will check that all other types are handled correctly 
> in this situation, not just character types.
>

After studying the F95 standard and trying some more test cases I have found
that I need to revise this patch to return a "NULL".  I was thrown off track 
because I was comparing results with ifort which initializes variables that are 
"undefined".  gfortran does not do that.

The attached is the corrected patch which gives the correct behavior and a 
corrected test case.  The other two test cases (namelist_14.f90 and 
namelist_15.f90) remain the same as my previous submission.  I have also looked 
at integer, real, and logical cases and those are working OK.

Sorry for the iteration.  Regression tested again and NIST tested OK.

OK for trunk?  OK for 4.0-branch?

Regards,

Jerry
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