[Patch?, fortran] PRs 31197, 31258 and 31879 - character things

[Tobias Schlüter]

Paul Richard Thomas wrote:
> Being aware that the stage 1 cut-off is with us, I wanted to know what
> you would like me to do with the attached, noting that:

I don't think this is at all affected by the staging of the compiler. 
Bugs may be fixed all the way into stage 3.

A minor possible enhancement: you could move the checks for ts.type == 
BT_CHARACTER and ref != NULL into gfc_resolve_substring_charlen, saving 
you the need to spell this out everytime you call the function.  I've 
not looked at the details of the patch.

Cheers,
- Tobi