[Bug regression/52515] New: [4.8 Regression]: build fails on cris-elf in unwind-dw2.c

["hp at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52515

             Bug #: 52515
           Summary: [4.8 Regression]: build fails on cris-elf in
                    unwind-dw2.c
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: build, ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hp@gcc.gnu.org
                CC: rsandifo@gcc.gnu.org
              Host: x86_64-unknown-linux-gnu
            Target: cris-axis-elf


Created attachment 26844
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26844
repeat with e.g. cc1 -fpreprocessed unwind-dw2.i -O2 -o unwind-dw2.s

A patch in the revision range (last_known_working:first_known_failing)
184997:185014 caused the build for cris-elf to fail as follows:

/tmp/hpautotest-gcc1/cris-elf/gccobj/./gcc/xgcc
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/./gcc/ -nostdinc
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/newlib/ -isystem
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/newlib/targ-include -isystem
/tmp/hpautotest-gcc1/gcc/newlib/libc/include
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libgloss/cris
-L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libgloss/libnosys
-L/tmp/hpautotest-gcc1/gcc/libgloss/cris
-B/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/bin/
-B/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/lib/ -isystem
/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/include -isystem
/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/sys-include    -g -O2 -march=v10
-mbest-lib-options -O2  -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include   -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -Dinhibit_libc  -I. -I. -I../../.././gcc
-I/tmp/hpautotest-gcc1/gcc/libgcc -I/tmp/hpautotest-gcc1/gcc/libgcc/.
-I/tmp/hpautotest-gcc1/gcc/libgcc/../gcc
-I/tmp/hpautotest-gcc1/gcc/libgcc/../include  -DHAVE_CC_TLS -DUSE_EMUTLS -o
unwind-dw2.o -MT unwind-dw2.o -MD -MP -MF unwind-dw2.dep -fexceptions -c
/tmp/hpautotest-gcc1/gcc/libgcc/unwind-dw2.c 
In file included from /tmp/hpautotest-gcc1/gcc/libgcc/unwind-dw2.c:36:0:
/tmp/hpautotest-gcc1/gcc/libgcc/unwind-pe.h: In function 'read_sleb128':
/tmp/hpautotest-gcc1/gcc/libgcc/unwind-pe.h:174:1: internal compiler error:
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [unwind-dw2.o] Error 1
make[4]: Leaving directory
`/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/v10/libgcc'

Preprocessed unwind-dw2.c attached.

Author of one or more suspect patches in revision range CC:ed.