[Bug fortran/27553] Testsuite ICE with -Wunused-labels

[sgk at troutmask dot apl dot washington dot edu]

------- Comment #2 from sgk at troutmask dot apl dot washington dot edu  2006-05-11 19:23 -------
Subject: Re:  Testsuite ICE with -Wunused-labels

On Thu, May 11, 2006 at 06:46:22PM -0000, fxcoudert at gcc dot gnu dot org
wrote:
> The ICE is due to -Wunused-labels. We try to issue a warning about the label
> (already marked as an error because it contains a non-numeric character) being
> unused, but said label has no locus (because the parser errored out before
> assigning it.
> 
> Steve, I'm adding you in the CC list since you were the one who rewrote that
> codepath a few months ago, IIRC.
> 
> I propose we strengthen the errorn in that case and also for the "Too many
> digits" and "Zero is not a valid label", by the following patch:
> 
> Index: parse.c
> ===================================================================
> --- parse.c     (revision 113671)
> +++ parse.c     (working copy)
> @@ -439,6 +439,7 @@
>           if (!gfc_is_whitespace (c))
>             gfc_error_now ("Non-numeric character in statement label at %C");
> 
> +         return ST_NONE;
>         }
>        else
>         {
> 

Yes, the above looks correct; otherwise, we fall through to
the decode_statement() call.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27553