Re: Question on fixup_abnormal_edges

[Olivier Hainque <hainque at ACT-Europe dot FR>]

Thanks for the ultra prompt reply :)

Jan Hubicka wrote:
> >      for (e = bb->succ; e; e = e->succ_next)
> >        if (e->flags & EDGE_FALLTHRU)
> >          break;

> >  Is it expectable to have a null "e" after the loop, or is this a
> >  "should never happen" ?
> 
> It should never happen.

 OK, good to know.

> Where are you getting it?

 VMS, reproducible with a cross compiler hosted on Linux and targetted
 to alpha-dec-openvms7.1.

 The testcase is in Ada, with a compiler based on our internal GNAT tree
 and gcc 3.2. The problem only shows up with -O2 and backend inlining.
 Not an ideal combination ...

 I will attempt a build with the GNAT sources from the public GNAT tree and
 see if it reproduces, but this seems unlikely.

 I can investigate here, so clues as to what might have gone wrong would be
 appreciated. I understand this might not be easy with the only little
 information available at this point.
 
 Thanks again for your help,

 Kind Regards,
 
 Olivier