[Bug fortran/12918] New: internal compiler error: in final_scan_insn, at final.c:2407 during GCC build

["green at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12918

           Summary: internal compiler error: in final_scan_insn, at
                    final.c:2407 during GCC build
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: green at redhat dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: v850-elf

The tree-ssa v850-elf toolchain fails to build.  The problem is triggered
while building fortran libraries.

opt/spindazzle/gnutools/build-X-v850-elf/gcc/xgcc
-B/opt/spindazzle/gnutools/build-X-v850-elf/gcc/ -nostdinc
-B/opt/spindazzle/gnutools/build-X-v850-elf/v850-elf/newlib/ -isystem
/opt/spindazzle/gnutools/build-X-v850-elf/v850-elf/newlib/targ-include -isystem
/opt/spindazzle/gnutools/src/HEAD-2003-11-05/newlib/libc/include
-B/opt/spindazzle/gnutools/HEAD-2003-11-05/H-i686-pc-linux-gnulibc2.3/v850-elf/bin/
-B/opt/spindazzle/gnutools/HEAD-2003-11-05/H-i686-pc-linux-gnulibc2.3/v850-elf/lib/
-isystem
/opt/spindazzle/gnutools/HEAD-2003-11-05/H-i686-pc-linux-gnulibc2.3/v850-elf/include
-isystem
/opt/spindazzle/gnutools/HEAD-2003-11-05/H-i686-pc-linux-gnulibc2.3/v850-elf/sys-include
-L/opt/spindazzle/gnutools/build-X-v850-elf/ld -c -DSkip_f2c_Undefs
-DAllow_TYQUAD -I. -I../../../../../src/HEAD-2003-11-05/libf2c/libI77 -I..
-I../../../../../src/HEAD-2003-11-05/libf2c/libI77/.. -DHAVE_CONFIG_H -W -Wall
-O2 -fno-builtin -g -O2 -mv850e
../../../../../src/HEAD-2003-11-05/libf2c/libI77/rsne.c -o rsne.o
../../../../../src/HEAD-2003-11-05/libf2c/libI77/rsne.c: In function `mk_hashtab':
 
../../../../../src/HEAD-2003-11-05/libf2c/libI77/rsne.c:85: warning: 'x0' might
be used uninitialized in this function
../../../../../src/HEAD-2003-11-05/libf2c/libI77/rsne.c: In function `x_rsne':
 
../../../../../src/HEAD-2003-11-05/libf2c/libI77/rsne.c:274: warning: 'dn' might
be used uninitialized in this function
../../../../../src/HEAD-2003-11-05/libf2c/libI77/rsne.c:274: warning: 'dn0'
might be used uninitialized in this function
../../../../../src/HEAD-2003-11-05/libf2c/libI77/rsne.c:577: internal compiler
error: in final_scan_insn, at final.c:2407
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.