https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123638
Bug ID: 123638
Summary: [ICE] segfault defaulted operator<=> for an enum
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: thiago at kde dot org
Target Milestone: ---
Simple testcase:
#include <compare>
enum class LogLevelVerbosity : char { };
std::strong_ordering operator<=>(LogLevelVerbosity a, LogLevelVerbosity b)
noexcept = default;
Output:
<stdin>:3:87: internal compiler error: Segmentation fault
0x28c699d internal_error(char const*, ...)
/home/tjmaciei/src/gcc/gcc/diagnostic-global-context.cc:787
0x15055af crash_signal
/home/tjmaciei/src/gcc/gcc/toplev.cc:325
0x7f6cf124290f ???
/usr/src/debug/glibc-2.42/signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0xdf8164 strip_array_types(tree_node*)
/home/tjmaciei/src/gcc/gcc/tree.h:5137
0xdf8164 cp_type_quals(tree_node const*)
/home/tjmaciei/src/gcc/gcc/cp/typeck.cc:11946
0xdeb8dd cp_build_qualified_type(tree_node*, int, int)
/home/tjmaciei/src/gcc/gcc/cp/tree.cc:1503
0xdfab9d same_type_ignoring_top_level_qualifiers_p(tree_node*, tree_node*)
/home/tjmaciei/src/gcc/gcc/cp/typeck.cc:1795
0xdfab9d same_type_ignoring_top_level_qualifiers_p(tree_node*, tree_node*)
/home/tjmaciei/src/gcc/gcc/cp/typeck.cc:1787
0xc5379b early_check_defaulted_comparison
/home/tjmaciei/src/gcc/gcc/cp/method.cc:1245
0xc5379b defaultable_fn_check(tree_node*)
/home/tjmaciei/src/gcc/gcc/cp/method.cc:3883
0xbea01b cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int,
cp_decomp*)
/home/tjmaciei/src/gcc/gcc/cp/decl.cc:9541
0xd19a0a cp_parser_init_declarator
/home/tjmaciei/src/gcc/gcc/cp/parser.cc:25453
0xd1caaf cp_parser_simple_declaration
/home/tjmaciei/src/gcc/gcc/cp/parser.cc:17262
0xd29f38 cp_parser_declaration
/home/tjmaciei/src/gcc/gcc/cp/parser.cc:16885
0xd2b46b cp_parser_toplevel_declaration
/home/tjmaciei/src/gcc/gcc/cp/parser.cc:16906
0xd2b46b cp_parser_translation_unit
/home/tjmaciei/src/gcc/gcc/cp/parser.cc:5560
0xd2b46b c_parse_file()
/home/tjmaciei/src/gcc/gcc/cp/parser.cc:56343
0xe9dfb1 c_common_parse_file()
/home/tjmaciei/src/gcc/gcc/c-family/c-opts.cc:1422
Please submit a full bug report, with preprocessed source.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Happens to GCC 15 too.
Clang output:
error: invalid parameter type for non-member defaulted three-way comparison
operator; found 'LogLevelVerbosity', expected class or reference to a constant
class
