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From: "uecker at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/113492] ICE: in composite_type_internal, at c/c-typeck.cc:557
 with -std=c2x -funsigned-bitfields since r14-6808
Date: Sat, 20 Jan 2024 12:34:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113492

--- Comment #10 from uecker at gcc dot gnu.org ---
Removing the assertion is enough to fix it. But the cause is strange. We
somehow get two unsigned types in DECL_BIT_FIELD_TYPE which should be the s=
ame
but are not, e.g:

 <integer_type 0x7f6dad774738 public unsigned SI
    size <integer_cst 0x7f6dad624198 type <integer_type 0x7f6dad6220a8
bitsizetype> constant 32>
    unit-size <integer_cst 0x7f6dad6241b0 type <integer_type 0x7f6dad622000
sizetype> constant 4>
    align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f6dad774738 precision:32 min <integer_cst 0x7f6dad77ebe8 0> max <integer=
_cst
0x7f6dad769270 4294967295>>
 <integer_type 0x7f6dad622690 unsigned int public unsigned SI
    size <integer_cst 0x7f6dad624198 type <integer_type 0x7f6dad6220a8
bitsizetype> constant 32>
    unit-size <integer_cst 0x7f6dad6241b0 type <integer_type 0x7f6dad622000
sizetype> constant 4>
    align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f6dad622690 precision:32 min <integer_cst 0x7f6dad6241c8 0> max <integer=
_cst
0x7f6dad624180 4294967295>
    pointer_to_this <pointer_type 0x7f6dad632690>>=