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

[John David Anglin]

It appears that the addition of the following patch

Mon Apr  7 15:56:30 CEST 2003  Jan Hubicka  <jh@suse.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.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)