[Bug middle-end/25869] New: [4.2 regression] MMIX broken: ICE compiling __divti3

hp at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Fri Jan 20 04:47:00 GMT 2006


Last known to work with: "Tue Jan 17 02:44:03 UTC 2006 (revision 109801M)".
Known to fail with: "Fri Jan 20 03:42:13 UTC 2006 (revision 110017M)".

/home/hp/combined/mmixware-sim/./gcc/xgcc
-B/home/hp/combined/mmixware-sim/./gcc/ -nostdinc
-B/home/hp/combined/mmixware-sim/mmix\
-knuth-mmixware/newlib/ -isystem
/home/hp/combined/mmixware-sim/mmix-knuth-mmixware/newlib/targ-include -isystem
/home/hp/combine\
d/combined/newlib/libc/include -B/usr/local/mmix-knuth-mmixware/bin/
-B/usr/local/mmix-knuth-mmixware/lib/ -isystem /usr/local/mm\
ix-knuth-mmixware/include -isystem /usr/local/mmix-knuth-mmixware/sys-include
-L/home/hp/combined/mmixware-sim/./ld -O2  -O2 -g -\
O2  -DIN_GCC -DCROSS_COMPILE   -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem\
 ./include  -mlibfuncs -O2 -g  -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED
-Dinhibit_libc -I. -I. -I/home/hp/combined/combined/gcc -I/h\
ome/hp/combined/combined/gcc/. -I/home/hp/combined/combined/gcc/../include
-I/home/hp/combined/combined/gcc/../libcpp/include  -I\
/home/hp/combined/combined/gcc/../libdecnumber -I../libdecnumber -DL_divdi3
-fexceptions -fnon-call-exceptions -c /home/hp/combin\
ed/combined/gcc/libgcc2.c -o libgcc/./_divdi3.o
/home/hp/combined/combined/gcc/libgcc2.c: In function '__divti3':
/home/hp/combined/combined/gcc/libgcc2.c:1056: internal compiler error:
Segmentation fault

gdb session shows a SEGV in df_chain_unlink:
Program received signal SIGSEGV, Segmentation fault.
0x0819bffc in df_chain_unlink (dflow=0x84aa3f8, ref=0x8507480, link=0x84fd06c)
    at /home/hp/combined/combined/gcc/df-problems.c:110
110:         chain = chain->next;
(gdb) p chain
$1 = (struct df_link *) 0xafafafaf

df-problems.c activists CC:ed.


-- 
           Summary: [4.2 regression] MMIX broken: ICE compiling __divti3
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, build
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hp at gcc dot gnu dot org
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: mmix-knuth-mmixware


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25869



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