[Bug c/68349] New: ice in decompose_normal_address with -O2 at tlanal.c:6086

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68349

            Bug ID: 68349
           Summary: ice in decompose_normal_address with -O2 at
                    tlanal.c:6086
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 36708
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36708&action=edit
C source code

I used gcc trunk dated 20151114 to compile the attached C code.

The compiler said

$ ../results/bin/gcc -c -O2 bug245.c
findhyphen.c: In function ‘DoHyphens’:
findhyphen.c:291:1: internal compiler error: in decompose_normal_address, at
rtlanal.c:6086

0xaeec83 decompose_normal_address
    ../../src/trunk/gcc/rtlanal.c:6086
0xaeec83 decompose_address(address_info*, rtx_def**, machine_mode, unsigned
char, rtx_code)
    ../../src/trunk/gcc/rtlanal.c:6163
0x9b8355 process_address_1
    ../../src/trunk/gcc/lra-constraints.c:2874
0x9b8355 process_address
    ../../src/trunk/gcc/lra-constraints.c:3133