Re: bootstrap/9382: AIX 5.2 ../../gcc-20030120/gcc/libgcc2.c:1161: internal compiler error: in extract_insn, at recog.c:2175

[John Ruttenberg <rutt@chezrutt.com>]

The following reply was made to PR bootstrap/9382; it has been noted by GNATS.

From: John Ruttenberg <rutt@chezrutt.com>
To: gcc-gnats@gcc.gnu.org, glebourgeois@amadeus.net, gcc-bugs@gcc.gnu.org,
   nobody@gcc.gnu.org, gcc-prs@gcc.gnu.org
Cc:  
Subject: Re: bootstrap/9382: AIX 5.2 ../../gcc-20030120/gcc/libgcc2.c:1161: internal compiler error: in extract_insn, at recog.c:2175
Date: Mon, 24 Mar 2003 12:11:12 -0500

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9382
 
 I have some more information about this.  It seems to happen or not depending
 on which compiler I use to bootstrap.  With 3.2.1 (binary from UCLA) and 2.9
 (binary form IBM), I encounter the problem.  With 2.95.3 (I bootstrapped), I
 do not encounter the problem.
 
 The fact that the problem can be reproduced with two different bootstrap
 compilers from such different releases leads me to suspect that perhaps there
 is some uninitialized variable involved.  Or some other cause of undefined
 behavior.
 
 I don't know that much aboug gcc internals, but perhaps I can narrow down a
 little further somehow.  But it will be time consuming and it would be good to
 know if anyone knows anything about this before I expend any energy on it.