Comment 5 for bug 972648

I can send you further similar examples in case you need them:

Starting program: /usr/lib/gcc/x86_64-linux-gnu/4.6/cc1plus -quiet -I . -I .. -I /mnt/linux-data-on-win7/Sage/sage-5.0.beta11-gcc-4.6.3-1ubuntu3/local -I /mnt/linux-data-on-win7/Sage/sage-5.0.beta11-gcc-4.6.3-1ubuntu3/local/include -I /mnt/linux-data-on-win7/Sage/sage-5.0.beta11-gcc-4.6.3-1ubuntu3/local/include -I /mnt/linux-data-on-win7/Sage/sage-5.0.beta11-gcc-4.6.3-1ubuntu3/local/include -imultilib . -imultiarch x86_64-linux-gnu -D_GNU_SOURCE -D HONORS_CXXFLAGS -D HONORS_CPPFLAGS -D NDEBUG -D OM_NDEBUG -D x86_64_Linux -D HAVE_CONFIG_H /data/tmp/kspoly.ii -march=corei7-avx -mcx16 -msahf -mno-movbe -maes -mpclmul -mpopcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-tbm -mavx -msse4.2 -msse4.1 --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=3072 -mtune=corei7-avx -quiet -dumpbase kspoly.cc -auxbase kspoly -g -g -g -O3 -O2 -O3 -fno-strict-aliasing -fPIC -fno-implicit-templates -fstack-protector -o /data/tmp/kspoly.s -frandom-seed=0

Program received signal SIGSEGV, Segmentation fault.
0x00000000006b903e in gsi_for_stmt ()
(gdb) bt
#0 0x00000000006b903e in gsi_for_stmt ()
#1 0x00000000004904ef in ?? ()
#2 0x0000000000865c73 in ?? ()
#3 0x0000000000732779 in execute_one_pass ()
#4 0x0000000000732a35 in execute_pass_list ()
#5 0x0000000000732a47 in execute_pass_list ()
#6 0x00000000007ffc11 in tree_rest_of_compilation ()
#7 0x000000000094440f in ?? ()
#8 0x00000000009460ba in cgraph_optimize ()
#9 0x00000000009464ba in cgraph_finalize_compilation_unit ()
#10 0x00000000004f7af1 in cp_write_global_declarations ()
#11 0x00000000007c447e in toplev_main ()
#12 0x00007ffff6f4376d in __libc_start_main ()
   from /lib/x86_64-linux-gnu/libc.so.6
#13 0x000000000049f889 in _start ()
(gdb)

(This one is also from Singular 3-1-3-3.)