[Bug bootstrap/51796] New: [4.7 regression] internal compiler error: in distribute_notes, at combine.c:13285 for libgomp/alloc.c on m68k-linux

["mikpe at it dot uu.se" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51796

             Bug #: 51796
           Summary: [4.7 regression] internal compiler error: in
                    distribute_notes, at combine.c:13285 for
                    libgomp/alloc.c on m68k-linux
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikpe@it.uu.se


Created attachment 26276
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26276
preprocessed source for libgomp/alloc.c

Bootstrapping gcc-4.7-20120107 on m68k-linux fails during
all-stage1-target-libgomp with:

/mnt/scratch/objdir47/./gcc/xgcc -B/mnt/scratch/objdir47/./gcc/
-B/mnt/scratch/install47/m68k-unknown-linux-gnu/bin/
-B/mnt/scratch/install47/m68k-unknown-linux-gnu/lib/ -isystem
/mnt/scratch/install47/m68k-unknown-linux-gnu/include -isystem
/mnt/scratch/install47/m68k-unknown-linux-gnu/sys-include -DHAVE_CONFIG_H -I.
-I/mnt/scratch/gcc-4.7-20120107/libgomp
-I/mnt/scratch/gcc-4.7-20120107/libgomp/config/posix
-I/mnt/scratch/gcc-4.7-20120107/libgomp -Wall -Werror -pthread
-ftls-model=initial-exec -g -O2 -MT alloc.lo -MD -MP -MF .deps/alloc.Tpo -c
/mnt/scratch/gcc-4.7-20120107/libgomp/alloc.c -o alloc.o
/mnt/scratch/gcc-4.7-20120107/libgomp/alloc.c: In function 'gomp_malloc':
/mnt/scratch/gcc-4.7-20120107/libgomp/alloc.c:40:1: internal compiler error: in
distribute_notes, at combine.c:13285

The previous weekly snapshot, gcc-4.7-20111231, built fine (once r182819 was
backported to fix PR51725)