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

[cgd at broadcom dot com]

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

From: cgd at broadcom dot com
To: rsandifo at sources dot redhat dot com
Cc: gcc-bugs at gcc dot gnu dot org,
	gcc-prs at gcc dot gnu dot org,
	nobody at gcc dot gnu dot org,
	gcc-gnats at gcc dot gnu dot org,
	rsandifo at sources dot redhat dot 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 at sources dot redhat dot 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 at libertysurf dot 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