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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/102760] ICE: in decompose, at wide-int.h:984
Date: Fri, 15 Oct 2021 03:12:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102760

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |minor
           Keywords|                            |ice-checking
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-10-15
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is a types which are not the same issue.

(gdb) p debug_tree(*expr_p)
 <init_expr 0x7ffff737de88
    type <integer_type 0x7ffff725f5e8 int public SI
        size <integer_cst 0x7ffff7244f78 constant 32>
        unit-size <integer_cst 0x7ffff7244f90 constant 4>
        align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff725f5e8 precision:32 min <integer_cst 0x7ffff7244f30 -2147483648> max
<integer_cst 0x7ffff7244f48 2147483647>
        pointer_to_this <pointer_type 0x7ffff7267a80>>
    side-effects
    arg:0 <ssa_name 0x7ffff724fe10 type <integer_type 0x7ffff725f5e8 int>

        def_stmt _2 =3D _1 & -128;
        version:2>
    arg:1 <bit_and_expr 0x7ffff737de60 type <integer_type 0x7ffff725f5e8 in=
t>

        arg:0 <ssa_name 0x7ffff724fdc8 type <integer_type 0x7ffff725f3f0 ch=
ar>

            def_stmt _1 =3D *type;
            version:1>
        arg:1 <integer_cst 0x7ffff7263420 constant -128>>
    t.c:3:18 start: t.c:3:18 finish: t.c:3:31>

This shows up in GCC 11 (with checking enabled).=