[Bug target/58442] New: bootstrapping vax crashes on NetBSD

["martin at netbsd dot org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58442

            Bug ID: 58442
           Summary: bootstrapping vax crashes on NetBSD
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: martin at netbsd dot org

During stage1 build of libstc++ this call dies with a segfault:

Reading symbols from /usr/pkgobj/lang/gcc48/work/build/gcc/cc1plus...done.
(gdb) run -quiet -nostdinc++ -v -I
/usr/pkgobj/lang/gcc48/work/gcc-4.8.1/libstdc++-v3/../libgcc -I
/usr/pkgobj/lang/gcc48/work/build/vax--netbsdelf/libstdc++-v3/include/vax--netbsdelf
-I /usr/pkgobj/lang/gcc48/work/build/vax--netbsdelf/libstdc++-v3/include -I
/usr/pkgobj/lang/gcc48/work/gcc-4.8.1/libstdc++-v3/libsupc++ -I
/usr/pkg/include -I /usr/include -iprefix
/usr/pkgobj/lang/gcc48/work/build/gcc/../lib/gcc/vax--netbsdelf/4.8.1/ -isystem
/usr/pkgobj/lang/gcc48/work/build/./gcc/include -isystem
/usr/pkgobj/lang/gcc48/work/build/./gcc/include-fixed -D _GLIBCXX_SHARED -D PIC
-D _GLIBCXX_SHARED -isystem /usr/pkg/gcc48/vax--netbsdelf/include -isystem
/usr/pkg/gcc48/vax--netbsdelf/sys-include
../../../../../gcc-4.8.1/libstdc++-v3/src/c++98/locale-inst.cc -quiet -dumpbase
locale-inst.cc -auxbase-strip locale-inst.o -g -O2 -O1 -Wall -Wextra
-Wwrite-strings -Wcast-qual -Wabi -version -fno-implicit-templates
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections
-frandom-seed=locale-inst.lo -fgcse -fgcse-after-reload -fPIC -o
/var/tmp//ccj04DGQ.s
[..]
GNU C++ (GCC) version 4.8.1 (vax--netbsdelf)
        compiled by GNU C version 4.1.3 20080704 prerelease (NetBSD nb3
20111107), GMP version 5.0.1, MPFR version 3.1.2, MPC version 1.0.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: e5b251aee23ceb19ee70c90a0aeb9824

Program received signal SIGSEGV, Segmentation fault.
0x0092cdb0 in recog_1 (x0=0x7e1b1a5c, insn=0x7e1b26c0, 
    pnum_clobbers=0x0, 2115705436, 2115708608, 0)
    at ../../gcc-4.8.1/gcc/config/vax/vax.md:417
(gdb) bt
#0  0x0092cdb0 in recog_1 (x0=0x7e1b1a5c, insn=0x7e1b26c0, 
    pnum_clobbers=0x0, 2115705436, 2115708608, 0)
    at ../../gcc-4.8.1/gcc/config/vax/vax.md:417
#1  0x0092f180 in recog_2 (x0=0x7e1b1a5c, insn=0x7e1b26c0, 
    pnum_clobbers=0x0, 2115705436, 2115708608, 0)
    at ../../gcc-4.8.1/gcc/config/vax/vax.md:529
#2  0x00932c1c in recog (x0=0x7e1b1a5c, insn=0x7e1b26c0, 
    pnum_clobbers=0x0, 2115705436, 2115708608, 0)
    at ../../gcc-4.8.1/gcc/config/vax/vax.md:1462
#3  0x0066f5e3 in recog_memoized (insn=0x7e1b26c0, 2115708608)
    at ../../gcc-4.8.1/gcc/recog.h:155
#4  0x0066f83c in extract_insn (insn=0x7e1b26c0, 2115708608)
    at ../../gcc-4.8.1/gcc/recog.c:2148
#5  0x005066d1 in instantiate_virtual_regs_in_insn (
    insn=0x7e1b26c0, 2115708608) at ../../gcc-4.8.1/gcc/function.c:1561
#6  0x00507cd3 in instantiate_virtual_regs ()
    at ../../gcc-4.8.1/gcc/function.c:1928
#7  0x00646f2f in execute_one_pass (pass=0xef6974, 15690100)
    at ../../gcc-4.8.1/gcc/passes.c:2330
#8  0x00647108 in execute_pass_list (pass=0xef6974, 15690100)
    at ../../gcc-4.8.1/gcc/passes.c:2378
#9  0x0064713d in execute_pass_list (pass=0xef7194, 15692180)
    at ../../gcc-4.8.1/gcc/passes.c:2379
(gdb) list
412                           (match_operand:VAXint 2 "general_operand"
"nrmT,nrmT")))]
413       ""
414       "@
415        sub<VAXint:isfx>2 %2,%0
416        sub<VAXint:isfx>3 %2,%1,%0")
417     
418     (define_expand "subdi3"
419       [(set (match_operand:DI 0 "nonimmediate_operand" "=g")
420             (minus:DI (match_operand:DI 1 "general_operand" "g")
421                       (match_operand:DI 2 "general_operand" "g")))]
(gdb) p debug_rtx(x0)
(set (zero_extract:SI (subreg:SI (reg/v:DI 71 [ __s ]) 4)
        (const_int 8 [0x8])
        (const_int 0 [0]))
    (subreg:SI (reg:DI 108) 4))