[patch, Fortran] Fix some string temporaries

[Thomas Koenig]

Am 18.07.2016 um 20:58 schrieb Mikael Morin:

>> Unfortunately not.  The original code (before I lifted out the
>> functionality) sometimes had GFC_DEP_ERROR at the end of the
>> function, which was then removed by
>>
>>   return fin_dep == GFC_DEP_OVERLAP;
>>
> That is very strange, there is an assert just a few lines before, that
> fin_dep != GFC_DEP_ERROR.

This is not the only return statement.

For example, look at

@@ -2215,7 +2268,7 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gf
           /* Exactly matching and forward overlapping ranges don't cause a
              dependency.  */
           if (fin_dep < GFC_DEP_BACKWARD)
-           return 0;
+           return fin_dep;

A GFC_DEP_ERROR could 'escape' here.

I didn't change the logic (at least not intentionally), I just made
it more visible.

Regards

	Thomas