[PR fortran/38507] Fix checks for valid GOTOs

[Tobias Schlüter]

Steve Kargl wrote:
> On Sat, Jan 03, 2009 at 06:20:31PM +0100, Paul Richard Thomas wrote:
>> Dear Tobi,
>>> Built and tested on i686-darwin.  Ok?
>> Yes indeed - it's OK by me.  This raises the question as to whether we
>> should wait for 4.5?  I guess that we could cite a virtual regression?
>>
> 
> Well, it fixes a fairly bad bug.  It may also fix a regression,
> but someone would need to check gfortran prior to Tobi's 
> original bitmap implementation of tracking labels.

Well, I know that the patch which introduced bitmaps (which was intended 
to be only a performance patch) reversed the logic from right to wrong. 
    The patch for PR17708 already introduced a wrong warning in 2004.

For the record, I don't think it's a bad bug, just a wrong warning, but 
the patch comes at low risk (at worst replacing a wrong warning by 
another wrong warning), but I'll leave it up to your to discretion 
whether to apply or not.

Cheers,
- Tobi
>