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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/105853] New: ice in pieces_addr constructor
Date: Sun, 05 Jun 2022 07:12:40 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105853

            Bug ID: 105853
           Summary: ice in pieces_addr constructor
           Product: gcc
           Version: 12.0
            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 53086
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D53086&action=3Dedit
C source code

The attached C code does this:

$ ../results/bin/gcc -c -w -march=3Dbdver2 bug818.c
during RTL pass: expand
lib/packets.c: In function =E2=80=98compose_nd_ns=E2=80=99:
lib/packets.c:1701:5: internal compiler error: Segmentation fault
0xdad1c9 crash_signal(int)
        /home/dcb/gcc/working/gcc/../../trunk.git/gcc/toplev.cc:322
0x955a4d pieces_addr::pieces_addr(rtx_def*, bool, rtx_def* (*)(void*, void*,
long, fixed_size_mode), void*)
        /home/dcb/gcc/working/gcc/../../trunk.git/gcc/expr.cc:996
0x955a4d op_by_pieces_d::op_by_pieces_d(unsigned int, rtx_def*, bool, rtx_d=
ef*,
bool, rtx_def* (*)(void*, void*, l
ong, fixed_size_mode), void*, unsigned long, unsigned int, bool, bool)
        /home/dcb/gcc/working/gcc/../../trunk.git/gcc/expr.cc:1174

The code seems to break sometime between git hash 919822adc923b00e
and aec868578d851576.

I will have my usual go at reducing the code.=