[Bug target/47951] New: [4.6 Regression] web.c:union_match_dups segmentation fault for bfin

["Stuart.Henderson at analog dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47951

           Summary: [4.6 Regression] web.c:union_match_dups segmentation
                    fault for bfin
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: Stuart.Henderson@analog.com


bfin-uclinux fails to build libgfortran due to a seg fault in union_match_dups
in web.c

Looks like this is the blackfin version of:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43742

which was caused by:
http://gcc.gnu.org/viewcvs?view=revision&revision=158187

i'm not sure what the guilty pattern is though.

/home/shender/gnu/toolchain/gcc_build-4.6/./gcc/xgcc
-B/home/shender/gnu/toolchain/gcc_build-4.6/./gcc/
-B/home/shender/gnu/toolchain/bfin-uclinux/bfin-uclinux/bin/
-B/home/shender/gnu/toolchain/bfin-uclinux/bfin-uclinux/lib/ -isystem
/home/shender/gnu/toolchain/bfin-uclinux/bfin-uclinux/include -isystem
/home/shender/gnu/toolchain/bfin-uclinux/bfin-uclinux/sys-include
-DHAVE_CONFIG_H -I. -I/home/shender/gnu/toolchain/gcc-4.6/libgfortran
-iquote/home/shender/gnu/toolchain/gcc-4.6/libgfortran/io
-I/home/shender/gnu/toolchain/gcc-4.6/libgfortran/../gcc
-I/home/shender/gnu/toolchain/gcc-4.6/libgfortran/../gcc/config -I../.././gcc
-D_GNU_SOURCE -std=gnu99 -ftree-vectorize -funroll-loops -g -O1 -c
/home/shender/gnu/toolchain/gcc-4.6/libgfortran/generated/matmul_i1.c -o
matmul_i1.o
/home/shender/gnu/toolchain/gcc-4.6/libgfortran/generated/matmul_i1.c: In
function ÃâËmatmul_i1Ãââ:
/home/shender/gnu/toolchain/gcc-4.6/libgfortran/generated/matmul_i1.c:374:1:
internal compiler error: Segmentation fault