Re: target/10580: [3.3] [powerpc] ICE with -O -Wunreachable-code

Re: target/10580: [3.3] [powerpc] ICE with -O -Wunreachable-code

[doko]

Synopsis: [3.3] [powerpc] ICE with -O -Wunreachable-code

State-Changed-From-To: feedback->closed
State-Changed-By: doko
State-Changed-When: Thu May  1 15:24:07 2003
State-Changed-Why:
    Fixed in 3.3 CVS 20030429

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10580

Re: target/10580: [3.3] [powerpc] ICE with -O -Wunreachable-code

[bangerth]

Synopsis: [3.3] [powerpc] ICE with -O -Wunreachable-code

State-Changed-From-To: open->feedback
State-Changed-By: bangerth
State-Changed-When: Thu May  1 14:01:46 2003
State-Changed-Why:
    Could you possibly try with the latest CVS versions? Jason
    fixed a bug that looks suspiciously similar yesterday or
    the day before.
    
    W.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10580

target/10580: [3.3] [powerpc] ICE with -O -Wunreachable-code

[Matthias Klose]

>Number:         10580
>Category:       target
>Synopsis:       [3.3] [powerpc] ICE with -O -Wunreachable-code
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Thu May 01 13:56:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     "Robertson, Evin C" <ECR1120@MAIL.ECU.EDU>
>Release:        
>Organization:
The Debian Project
>Environment:
>Description:
[ Reported to the Debian BTS as report #189702.
  Please CC 189702@bugs.debian.org on replies.
  Log of report can be found at http://bugs.debian.org/189702 ]
	

behaviour seen with 3.3 CVS 20030427, not with 3.4 CVS 20030302

gcc segfaults sometimes on PPC when run with -O -Wunreachable-code

Attached code sample is from bison output.  Does not seem to happen
with the same version on x86.

$ gcc -c -O -Wunreachable-code test.c
test.c: In function `yystpcpy':
test.c:14: internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


char * yystpcpy(char *yydest, const char *yysrc)
{
  char *yyd = yydest;
  const char *yys = yysrc;

  while ((*yyd++ = *yys++) != '\0')
      ;

  return yyd - 1;
}
>How-To-Repeat:
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: