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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107291] New: [12/13 Regression] ICE in build_comparison_op,
 at cp/method.cc:1461
Date: Mon, 17 Oct 2022 11:17:37 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-on-invalid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: asolokha at gmx dot com
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107291

            Bug ID: 107291
           Summary: [12/13 Regression] ICE in build_comparison_op, at
                    cp/method.cc:1461
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

g++ 13.0.0 20221016 snapshot (g:6366e3e8847af98d4728d55951534769d034d02a) I=
CEs
when compiling the following testcase, extracted from
test/CXX/class/class.compare/class.compare.default/p1.cpp from the flang 15=
.0.1
test suite, w/ -std=3Dc++20:

struct S4;
bool operator=3D=3D(S4 const &, S4 const &) =3D default;

% g++-13 -std=3Dc++20 -c ean6w24q.cpp
ean6w24q.cpp:2:6: error: defaulted 'bool operator=3D=3D(const S4&, const S4=
&)' is
not a friend of 'S4'
    2 | bool operator=3D=3D(S4 const &, S4 const &) =3D default;
      |      ^~~~~~~~
ean6w24q.cpp: In function 'constexpr bool operator=3D=3D(const S4&, const S=
4&)':
ean6w24q.cpp:2:6: internal compiler error: in build_comparison_op, at
cp/method.cc:1461
0x6eb1f1 build_comparison_op(tree_node*, bool, int)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/method.cc:1461
0xa8dc5e synthesize_method(tree_node*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/method.cc:1823
0xa34889 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/decl.cc:8594
0xb2ef94 cp_parser_init_declarator
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/parser.cc:22895
0xb06cc9 cp_parser_simple_declaration
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/parser.cc:15284
0xb3a9a1 cp_parser_declaration
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/parser.cc:14970
0xb3b4e9 cp_parser_toplevel_declaration
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/parser.cc:14991
0xb3b4e9 cp_parser_translation_unit
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/parser.cc:5076
0xb3b4e9 c_parse_file()
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/cp=
/parser.cc:48860
0xc7bab1 c_common_parse_file()
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/c-=
family/c-opts.cc:1247=