[Bug target/78695] [7 Regression] ICE (segfault) on powerpc64le-linux-gnu

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78695

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-12-08
                 CC|                            |trippels at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #9 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Confirmed with -fstack-protector:

Program received signal SIGSEGV, Segmentation fault.
0x0000000010cf2918 in find_alignment_op (insn=0x3fffaf641a00,
base_reg=0x3fffaf580300) at ../../gcc/gcc/config/rs6000/rs6000.c:41445
41445         rtx_insn *and_insn = DF_REF_INSN (base_def_link->ref);
(gdb) l
41440
41441         struct df_link *base_def_link = DF_REF_CHAIN (base_use);
41442         if (!base_def_link || base_def_link->next)
41443           break;
41444
41445         rtx_insn *and_insn = DF_REF_INSN (base_def_link->ref);
41446         and_operation = alignment_mask (and_insn);
41447         if (and_operation != 0)
41448           break;
41449       }
(gdb) p base_def_link->ref->base->insn_info
$1 = (df_insn_info *) 0x0