https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94907
Bug ID: 94907
Summary: ICE: Segmentation fault (in check_return_expr)
Product: gcc
Version: 10.0
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: ---
gcc-10.1.0-RC20200430 ICEs when compiling the following testcase, extracted
from test/CXX/class/class.compare/class.compare.default/p4.cpp from the clang
10.0.0 test suite, w/ -std=c++2a:
namespace std {
struct strong_ordering {
};
}
struct E;
struct D {
virtual std::strong_ordering operator<=>(const struct E&) const = 0;
};
struct E : D {
std::strong_ordering operator<=>(const E&) const override = default;
};
% g++-10.1.0 -std=c++2a -c wwmk0dwc.cpp
wwmk0dwc.cpp: In member function 'virtual constexpr std::strong_ordering
E::operator<=>(const E&) const':
wwmk0dwc.cpp:12:24: internal compiler error: Segmentation fault
12 | std::strong_ordering operator<=>(const E&) const override = default;
| ^~~~~~~~
0xfed34f crash_signal
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/toplev.c:328
0xa8008a check_return_expr(tree_node*, bool*)
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/typeck.c:9924
0xa32b5f finish_return_stmt(tree_node*)
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/semantics.c:956
0x964803 build_comparison_op
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/method.c:1445
0x9652d9 synthesize_method(tree_node*)
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/method.c:1550
0x892e02 check_bases_and_members
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/class.c:6002
0x89725b finish_struct_1(tree_node*)
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/class.c:7216
0x898ca4 finish_struct(tree_node*, tree_node*)
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/class.c:7520
0x99abb3 cp_parser_class_specifier_1
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:23881
0x99cc5b cp_parser_class_specifier
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:24180
0x99cc5b cp_parser_type_specifier
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:17711
0x99dd65 cp_parser_decl_specifier_seq
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:14359
0x99e804 cp_parser_simple_declaration
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:13613
0x9c8ff2 cp_parser_declaration
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:13433
0x9c978f cp_parser_translation_unit
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:4734
0x9c978f c_parse_file()
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/cp/parser.c:43975
0xae268b c_common_parse_file()
/var/tmp/portage/sys-devel/gcc-10.1.0_rc20200430/work/gcc-10.1.0-RC-20200430/gcc/c-family/c-opts.c:1190
