https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67687
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2015-10-19 00:00:00 |2016-3-15
CC| |msebor at gcc dot gnu.org
Summary|[c++0x][constexpr] |ICE initializing constexpr
|initialize constexpr member |member with constexpr
|with constexpr constructor |constructor
Known to fail| |4.9.3, 5.3.0, 6.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
This seems to have always failed with an ICE. Reconfirming for all supported
versions, including the top of trunk.
$ cat t.c && /build/gcc-trunk-bootstrap/gcc/xgcc -B
/build/gcc-trunk-bootstrap/gcc -S -Wall -Wextra -Wpedantic -xc++ t.c
template <unsigned int Coordinate>
struct dimension{
template<typename ... T>
constexpr dimension(T...t){}
};
struct accessor_base{
template<typename ... T>
constexpr accessor_base(T...t){}
};
template <typename ArgType, typename Pair>
struct accessor_mixed{
private:
static constexpr accessor_base s_args_constexpr{dimension<Pair::first>{0}
};
};
t.c:16:79: internal compiler error: unexpected expression ‘(const
accessor_base){dimension<Pair:: first>{0}}’ of kind implicit_conv_expr
static constexpr accessor_base s_args_constexpr{dimension<Pair::first>{0}
};
^
0x84e015 cxx_eval_constant_expression
/src/gcc/trunk/gcc/cp/constexpr.c:3968
0x8515d3 cxx_eval_outermost_constant_expr
/src/gcc/trunk/gcc/cp/constexpr.c:4026
0x6d47b4 store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
/src/gcc/trunk/gcc/cp/typeck2.c:822
0x63be15 check_initializer
/src/gcc/trunk/gcc/cp/decl.c:6155
0x65c1c8 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
/src/gcc/trunk/gcc/cp/decl.c:6675
0x70bc0e grokfield(cp_declarator const*, cp_decl_specifier_seq*, tree_node*,
bool, tree_node*, tree_node*)
/src/gcc/trunk/gcc/cp/decl2.c:1036
0x758837 cp_parser_member_declaration
/src/gcc/trunk/gcc/cp/parser.c:22559
0x734128 cp_parser_member_specification_opt
/src/gcc/trunk/gcc/cp/parser.c:22108
0x734128 cp_parser_class_specifier_1
/src/gcc/trunk/gcc/cp/parser.c:21300
0x734128 cp_parser_class_specifier
/src/gcc/trunk/gcc/cp/parser.c:21536
0x734128 cp_parser_type_specifier
/src/gcc/trunk/gcc/cp/parser.c:15820
0x748f01 cp_parser_decl_specifier_seq
/src/gcc/trunk/gcc/cp/parser.c:12744
0x7573c5 cp_parser_single_declaration
/src/gcc/trunk/gcc/cp/parser.c:25703
0x75776c cp_parser_template_declaration_after_parameters
/src/gcc/trunk/gcc/cp/parser.c:25398
0x758178 cp_parser_explicit_template_declaration
/src/gcc/trunk/gcc/cp/parser.c:25630
0x758178 cp_parser_template_declaration_after_export
/src/gcc/trunk/gcc/cp/parser.c:25648
0x75f6a9 cp_parser_declaration
/src/gcc/trunk/gcc/cp/parser.c:12080
0x75ded6 cp_parser_declaration_seq_opt
/src/gcc/trunk/gcc/cp/parser.c:12010
0x75e1e8 cp_parser_translation_unit
/src/gcc/trunk/gcc/cp/parser.c:4323
0x75e1e8 c_parse_file()
/src/gcc/trunk/gcc/cp/parser.c:37394
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