https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86950
Bug ID: 86950
Summary: internal compiler error: unexpected expression
‘void()’ of kind cast_expr
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
template <typename T>
auto f(T) -> decltype(void(), 1) { }
int
main ()
{
f(0);
}
0x8d1e01 cxx_eval_constant_expression
/home/mpolacek/src/gcc/gcc/cp/constexpr.c:4861
0x8cf490 cxx_eval_constant_expression
/home/mpolacek/src/gcc/gcc/cp/constexpr.c:4485
0x8d451e cxx_eval_outermost_constant_expr
/home/mpolacek/src/gcc/gcc/cp/constexpr.c:4970
0x8d7368 maybe_constant_value(tree_node*, tree_node*)
/home/mpolacek/src/gcc/gcc/cp/constexpr.c:5197
0xa6b7b9 check_narrowing(tree_node*, tree_node*, int, bool)
/home/mpolacek/src/gcc/gcc/cp/typeck2.c:909
0xa2b0c2 finish_decltype_type(tree_node*, bool, int)
/home/mpolacek/src/gcc/gcc/cp/semantics.c:8917
0x9ab936 cp_parser_decltype
/home/mpolacek/src/gcc/gcc/cp/parser.c:14296
0x9adcdf cp_parser_simple_type_specifier
/home/mpolacek/src/gcc/gcc/cp/parser.c:17197
0x9a7d95 cp_parser_type_specifier
/home/mpolacek/src/gcc/gcc/cp/parser.c:16982
0x9a8b62 cp_parser_type_specifier_seq
/home/mpolacek/src/gcc/gcc/cp/parser.c:21253
0x9a8d81 cp_parser_type_id_1
/home/mpolacek/src/gcc/gcc/cp/parser.c:21099
0x9a4977 cp_parser_trailing_type_id
/home/mpolacek/src/gcc/gcc/cp/parser.c:21192
0x9a4977 cp_parser_late_return_type_opt
/home/mpolacek/src/gcc/gcc/cp/parser.c:21017
0x9a4977 cp_parser_direct_declarator
/home/mpolacek/src/gcc/gcc/cp/parser.c:20189
0x9a4977 cp_parser_declarator
/home/mpolacek/src/gcc/gcc/cp/parser.c:20019
0x9b2891 cp_parser_init_declarator
/home/mpolacek/src/gcc/gcc/cp/parser.c:19535
0x9b960a cp_parser_single_declaration
/home/mpolacek/src/gcc/gcc/cp/parser.c:27432
0x9b974c cp_parser_template_declaration_after_parameters
/home/mpolacek/src/gcc/gcc/cp/parser.c:27034
0x9b9fee cp_parser_explicit_template_declaration
/home/mpolacek/src/gcc/gcc/cp/parser.c:27271
0x9b9fee cp_parser_template_declaration_after_export
/home/mpolacek/src/gcc/gcc/cp/parser.c:27290
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with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
