http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58511
Bug ID: 58511
Summary: [c++0x] ICE using static const member variable in
constexpr
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
The following invalid code snippet (compiled with "-std=c++0x") triggers an ICE
since GCC 4.8.0 (when inheriting constructors were introduced):
====================================
struct A
{
constexpr A(int, int = i) {}
static const int i;
};
struct B : A
{
using A::A;
};
constexpr B b(0);
====================================
bug.cc:12:16: error: 'constexpr B::B(int)' called in a constant expression
constexpr B b(0);
^
bug.cc:9:12: note: 'constexpr B::B(int)' is not usable as a constexpr function
because:
using A::A;
^
bug.cc:9:12: internal compiler error: in synthesized_method_walk, at
cp/method.c:1218
0x675548 synthesized_method_walk
../../gcc-4.8.0/gcc/cp/method.c:1217
0x679692 explain_implicit_non_constexpr(tree_node*)
../../gcc-4.8.0/gcc/cp/method.c:1481
0x69f68b explain_invalid_constexpr_fn(tree_node*)
../../gcc-4.8.0/gcc/cp/semantics.c:6379
0x69faf6 cxx_eval_call_expression
../../gcc-4.8.0/gcc/cp/semantics.c:6751
0x6a1142 cxx_eval_constant_expression
../../gcc-4.8.0/gcc/cp/semantics.c:7814
0x6a14a9 cxx_eval_constant_expression
../../gcc-4.8.0/gcc/cp/semantics.c:7835
0x6a4426 cxx_eval_outermost_constant_expr
../../gcc-4.8.0/gcc/cp/semantics.c:8115
0x5bd69d store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc-4.8.0/gcc/cp/typeck2.c:722
0x540b40 check_initializer
../../gcc-4.8.0/gcc/cp/decl.c:5711
0x5537b5 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc-4.8.0/gcc/cp/decl.c:6328
0x62afeb cp_parser_init_declarator
../../gcc-4.8.0/gcc/cp/parser.c:16038
0x62b85e cp_parser_simple_declaration
../../gcc-4.8.0/gcc/cp/parser.c:10567
0x62d630 cp_parser_block_declaration
../../gcc-4.8.0/gcc/cp/parser.c:10448
0x6361fb cp_parser_declaration
../../gcc-4.8.0/gcc/cp/parser.c:10345
0x634ecd cp_parser_declaration_seq_opt
../../gcc-4.8.0/gcc/cp/parser.c:10231
0x636772 cp_parser_translation_unit
../../gcc-4.8.0/gcc/cp/parser.c:3807
0x636772 c_parse_file()
../../gcc-4.8.0/gcc/cp/parser.c:28186
0x73e504 c_common_parse_file()
../../gcc-4.8.0/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]
