[Bug c/23445] New: [4.1 Regression] ICE with -O1 -ftree-vrp -fdelete-null-pointer-checks

["bunk at stusta dot de" <gcc-bugzilla at gcc dot gnu dot org>]

I'm getting the ICE below when trying to compile the file fs/asfs/extents.c
Linux kernel 2.6.13-rc5-mm1 with a current CVS HEAD gcc.

As soon as I remove _one_ of the three options "-O1 -ftree-vrp
-fdelete-null-pointer-checks" the problem disappears.

<--  snip  -->

...
$ /TMP/test/gcc/install/bin/gcc -m32 -Wp,-MD,fs/asfs/.extents.o.d  -nostdinc
-isystem /TMP/test/gcc/install/lib/gcc/i686-pc-linux-gnu/4.1.0/include
-D__KERNEL__ -Iinclude  -Iinclude/asm-i386/mach-default   
-DKBUILD_BASENAME=extents -DKBUILD_MODNAME=asfs -c -o fs/asfs/extents.o
fs/asfs/extents.c  -O1 -ftree-vrp -fdelete-null-pointer-checks
fs/asfs/extents.c: In function 'asfs_deletebnode':
fs/asfs/extents.c:325: internal compiler error: in compare_name_with_value, at
tree-vrp.c:2963
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
$ 

<--  snip  -->

-- 
           Summary: [4.1 Regression] ICE with -O1 -ftree-vrp -fdelete-null-
                    pointer-checks
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bunk at stusta dot de
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23445