Re: optimization/10024: [3.4 regression] [HP-PA] inline optimization ICE

["John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>]

The following reply was made to PR optimization/10024; it has been noted by GNATS.

From: "John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>
To: zack at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org, jh at suse dot cz,
   tausq at debian dot org
Cc:  
Subject: Re: optimization/10024: [3.4 regression] [HP-PA] inline optimization ICE
Date: Mon, 7 Apr 2003 19:18:51 -0400 (EDT)

 It appears that the addition of the following patch
 
 Mon Apr  7 15:56:30 CEST 2003  Jan Hubicka  <jh at suse dot cz>
 
         PR opt/10024
 	Revert Zack's change
 	* cfglayout.c (cfg_layout_redirect_edge):
 	Redirect any branch edges unified with the fallthru one.
 	* cfgrtl.c (force_nonfallthru_and_redirect):  Do not special
 	case fallthru edges when called via cfglayout.c
 
 causes gcc.c-torture/compile/20030405-1.c to fail on
 hppa2.0w-hp-hpux11.11 on the 3.3 branch at -O2 and above.
 
 <http://gcc.gnu.org/ml/gcc-testresults/2003-04/msg00438.html>.
 
 The test passed in my previous build.
 
 Running under gdb, the crash occurs at the spot mentioned by Zack
 in the audit trail:
 
 Starting program: /xxx/gnu/gcc-3.3/objdir/gcc/testsuite/../cc1 -O2 /xxx/gnu/gcc-3.3/gcc/gcc/testsuite/gcc.c-torture/compile/20030405-1.c
 warning: Unable to find __d_pid symbol in object file.
 warning: Suggest linking with /opt/langtools/lib/end.o.
 warning: GDB will be unable to track shl_load/shl_unload calls
  fixfloor fixtoi ftofix fixtof fixdiv itofix foo
 Program received signal SIGSEGV, Segmentation fault.
 force_nonfallthru_and_redirect (e=0x4008a000, target=0x40089a60)
     at ../../gcc/gcc/cfgrtl.c:961
 961               b->probability = prob;
 (gdb) p b
 $1 = 0x0
 
 Dave
 -- 
 J. David Anglin                                  dave dot anglin at nrc-cnrc dot gc dot ca
 National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)