bootstrap/7770: m68k ICE during bootstrap

bootstrap/7770: m68k ICE during bootstrap

[cato]

>Number:         7770
>Category:       bootstrap
>Synopsis:       m68k ICE during bootstrap
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 29 20:16:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Krister Walfridsson
>Release:        gcc version 3.3 20020828 (experimental)
>Organization:
>Environment:
m68k-unknown-netbsdelf1.5ZC
>Description:
The compiler reports an ICE during bootstrap, when compiling unwind-dw2-fde.c:
../../gcc/gcc/unwind-dw2-fde.c: In function `init_object':
../../gcc/gcc/unwind-dw2-fde.c:924: internal compiler error: Internal compiler error in reg_overlap_mentioned_p, at rtlanal.c:1543

I have attached a .i file that reproduces the problem.
>How-To-Repeat:
./xgcc -B./ -O2 -c bug.i
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="bug.i"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="bug.i"
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Re: bootstrap/7770: m68k ICE during bootstrap

[kristerw]

Synopsis: m68k ICE during bootstrap

State-Changed-From-To: open->closed
State-Changed-By: kristerw
State-Changed-When: Sun Sep 22 10:09:22 2002
State-Changed-Why:
    "gcc version 3.3 20020920 (experimental)" does not ICE for this test program, so the bug seems to have been fixed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7770

Re: bootstrap/7770: m68k ICE during bootstrap

[Jason R Thorpe]

The following reply was made to PR bootstrap/7770; it has been noted by GNATS.

From: Jason R Thorpe <thorpej@wasabisystems.com>
To: cato@df.lth.se
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: bootstrap/7770: m68k ICE during bootstrap
Date: Thu, 29 Aug 2002 20:43:23 -0700

 On Fri, Aug 30, 2002 at 03:08:35AM -0000, cato@df.lth.se wrote:
 
  > The compiler reports an ICE during bootstrap, when compiling unwind-dw2-fde.c:
  > ../../gcc/gcc/unwind-dw2-fde.c: In function `init_object':
  > ../../gcc/gcc/unwind-dw2-fde.c:924: internal compiler error: Internal compiler error in reg_overlap_mentioned_p, at rtlanal.c:1543
  > 
  > I have attached a .i file that reproduces the problem.
 
 FWIW, I noticed the same problem when updating the vax-elf changes after
 not having had time to deal with them for a while..
 
 Curiously, Matt Thomas did NOT see the same problem with vax-elf.  He
 sent me the diffs he's using, and I am about to try and figure out what
 the difference is...
 
 -- 
         -- Jason R. Thorpe <thorpej@wasabisystems.com>