Re: optimization/9301: [regression] [mips-linux] gcc 3.2.1 SEGV in try_forward_edges

Re: optimization/9301: [regression] [mips-linux] gcc 3.2.1 SEGV in try_forward_edges

[cgd]

The following reply was made to PR optimization/9301; it has been noted by GNATS.

From: cgd@broadcom.com
To: rsandifo@sources.redhat.com
Cc: gcc-bugs@gcc.gnu.org,
	gcc-prs@gcc.gnu.org,
	nobody@gcc.gnu.org,
	gcc-gnats@gcc.gnu.org,
	rsandifo@sources.redhat.com
Subject: Re: optimization/9301: [regression] [mips-linux] gcc 3.2.1 SEGV
 in try_forward_edges
Date: 31 Mar 2003 12:07:23 -0800

 At 31 Mar 2003 19:18:26 -0000, rsandifo@sources.redhat.com wrote:
 >     Do you know if this is still a problem?
 >
 >     I can't reproduce it with the head of gcc-3_2-branch using
 >     an i686-pc-linux-gnu cross mipsel-linux-gnu compiler (tried
 >     -EB -O2 as well as -O2).  I can't reproduce with gcc 3.3
 >     or trunk either.
 >     
 >     I'll try a native compiler as well as a pristine 3.2.1 build.
 
 I just tried 3.2.2 (plus local mods) and it seems to work fine.
 
 the patch:
 
 > 2003-02-03  Eric Botcazou  <ebotcazou@libertysurf.fr>
 > 
 >       PR ice-on-legal-code/9493
 >       * cfgcleanup.c (try_forward_edges): Check for null insn.
 
 might have done it; i dunno i didn't analyze it further.
 
 i looked at a .o that resulted from compiling the file, it looked OK
 (as far as I could tell, on a quick read).
 
 
 Now that it works, IMO this test should be thrown into the testsuite
 as a compilation test.
 
 
 
 chris
 

Re: optimization/9301: [regression] [mips-linux] gcc 3.2.1 SEGV in try_forward_edges

[rsandifo]

Synopsis: [regression] [mips-linux] gcc 3.2.1 SEGV in try_forward_edges

State-Changed-From-To: feedback->closed
State-Changed-By: rsandifo
State-Changed-When: Mon Mar 31 20:36:15 2003
State-Changed-Why:
    Yes, reverting the fix for 9493 does cause the bug to resurface.
    I've installed the test case as suggested.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9301

Re: optimization/9301: [regression] [mips-linux] gcc 3.2.1 SEGV in try_forward_edges

[rsandifo]

Synopsis: [regression] [mips-linux] gcc 3.2.1 SEGV in try_forward_edges

Responsible-Changed-From-To: unassigned->rsandifo
Responsible-Changed-By: rsandifo
Responsible-Changed-When: Mon Mar 31 19:18:26 2003
Responsible-Changed-Why:
    mine
State-Changed-From-To: open->feedback
State-Changed-By: rsandifo
State-Changed-When: Mon Mar 31 19:18:26 2003
State-Changed-Why:
    Do you know if this is still a problem?
    
    I can't reproduce it with the head of gcc-3_2-branch using
    an i686-pc-linux-gnu cross mipsel-linux-gnu compiler (tried
    -EB -O2 as well as -O2).  I can't reproduce with gcc 3.3
    or trunk either.
    
    I'll try a native compiler as well as a pristine 3.2.1 build.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9301