https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98899
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |10.3
Status|UNCONFIRMED |NEW
Summary|ICE: Illegal instruction: 4 |[10/11 Regression] ICE in
|"error: could not convert |tsubst_copy, at
|'<unparsed>' from |cp/pt.c:16198 since
|''<invalid tree code>'" on |r10-1280-g78f7607db4c53f8c
|macOS |
CC| |marxin at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
Last reconfirmed| |2021-02-01
Keywords| |ice-on-valid-code
Ever confirmed|0 |1
Known to work| |9.3.0
Known to fail| |10.2.0, 11.0
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Thank you for the bug report.
Reduce test-case:
$ cat pr98899.ii
template <int __v> struct integral_constant {
static constexpr int value = __v;
};
template <typename> struct conditional;
template <typename...> struct __and_;
template <typename _B1, typename _B2>
struct __and_<_B1, _B2> : conditional<_B1>::type {};
template <typename...>
struct __is_nt_constructible_impl : integral_constant<0> {};
template <typename... _Args>
struct is_nothrow_constructible
: __and_<int, __is_nt_constructible_impl<_Args...>> {};
template <typename> struct conditional {
typedef __is_nt_constructible_impl<> type;
};
class locale {
struct token {
enum {} typedef yytokentype;
};
template <typename Base> struct basic_symbol {
basic_symbol(typename Base::kind_type,
int) noexcept(is_nothrow_constructible<>::value);
};
struct by_kind {
typedef token::yytokentype kind_type;
};
struct symbol_type : basic_symbol<by_kind> {
int symbol_type_v;
symbol_type() : basic_symbol(token::yytokentype(), symbol_type_v) {}
};
};
$ g++ pr98899.ii -c -Werror
pr98899.ii: In instantiation of
‘locale::basic_symbol<Base>::basic_symbol(typename Base::kind_type, int) [with
Base = locale::by_kind; typename Base::kind_type =
locale::token::yytokentype]’:
pr98899.ii:29:69: required from here
pr98899.ii:21:5: internal compiler error: in tsubst_copy, at cp/pt.c:17205
21 | basic_symbol(typename Base::kind_type,
| ^~~~~~~~~~~~
0x6e0e47 tsubst_copy
/home/marxin/Programming/gcc/gcc/cp/pt.c:17205
0xb24f7e tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/marxin/Programming/gcc/gcc/cp/pt.c:20789
0xb28755 maybe_instantiate_noexcept(tree_node*, int)
/home/marxin/Programming/gcc/gcc/cp/pt.c:25592
0xb2833c maybe_instantiate_noexcept(tree_node*, int)
/home/marxin/Programming/gcc/gcc/cp/pt.c:25535
0xa194ca mark_used(tree_node*, int)
/home/marxin/Programming/gcc/gcc/cp/decl2.c:5610
0x9623a5 build_over_call
/home/marxin/Programming/gcc/gcc/cp/call.c:9351
0x95f722 build_new_method_call_1
/home/marxin/Programming/gcc/gcc/cp/call.c:10637
0x95f722 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
/home/marxin/Programming/gcc/gcc/cp/call.c:10712
0x960a86 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
/home/marxin/Programming/gcc/gcc/cp/call.c:10113
0xa385ca expand_default_init
/home/marxin/Programming/gcc/gcc/cp/init.c:1983
0xa385ca expand_aggr_init_1
/home/marxin/Programming/gcc/gcc/cp/init.c:2098
0xa3fb1b emit_mem_initializers(tree_node*)
/home/marxin/Programming/gcc/gcc/cp/init.c:1354
0xaf39b9 cp_parser_mem_initializer_list
/home/marxin/Programming/gcc/gcc/cp/parser.c:15907
0xaf39b9 cp_parser_ctor_initializer_opt
/home/marxin/Programming/gcc/gcc/cp/parser.c:15815
0xaf39b9 cp_parser_ctor_initializer_opt_and_function_body
/home/marxin/Programming/gcc/gcc/cp/parser.c:24027
0xaf511a cp_parser_function_definition_after_declarator
/home/marxin/Programming/gcc/gcc/cp/parser.c:29938
0xaf5624 cp_parser_late_parsing_for_member
/home/marxin/Programming/gcc/gcc/cp/parser.c:30845
0xacea63 cp_parser_class_specifier_1
/home/marxin/Programming/gcc/gcc/cp/parser.c:25104
0xacfa7b cp_parser_class_specifier
/home/marxin/Programming/gcc/gcc/cp/parser.c:25128
0xacfa7b cp_parser_type_specifier
/home/marxin/Programming/gcc/gcc/cp/parser.c:18381
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
