http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58583
Bug ID: 58583
Summary: [c++11] ICE with invalid non-static data member
initialization in template
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") is wrongly
accepted since GCC 4.7.0 (when non-static data member initializers were
introduced):
==============================
template<int N> struct A
{
A* p = new A<N>;
};
==============================
Even instantiating A<0> doesn't produce an error.
However, without template the code is rejected correctly.
A slightly modified code snippet triggers an ICE:
==============================
struct B
{
template<int N> struct A
{
A* p = new A<0>;
};
};
==============================
bug.cc: In constructor 'constexpr B::A<0>::A()':
bug.cc:3:26: internal compiler error: in tsubst_copy, at cp/pt.c:12810
template<int N> struct A
^
0x5bbd53 tsubst_copy
../../gcc/gcc/cp/pt.c:12810
0x59aa12 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:14855
0x69636c perform_member_init
../../gcc/gcc/cp/init.c:538
0x69636c emit_mem_initializers(tree_node*)
../../gcc/gcc/cp/init.c:1093
0x6a0a2e synthesize_method(tree_node*)
../../gcc/gcc/cp/method.c:796
0x617659 mark_used(tree_node*, int)
../../gcc/gcc/cp/decl2.c:4714
0x54889b build_over_call
../../gcc/gcc/cp/call.c:7116
0x54477e build_new_method_call_1
../../gcc/gcc/cp/call.c:7813
0x54477e build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
../../gcc/gcc/cp/call.c:7883
0x5456f2 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
../../gcc/gcc/cp/call.c:7440
0x699086 build_new_1
../../gcc/gcc/cp/init.c:2761
0x699086 build_new(vec<tree_node*, va_gc, vl_embed>**, tree_node*, tree_node*,
vec<tree_node*, va_gc, vl_embed>**, int, int)
../../gcc/gcc/cp/init.c:3001
0x645ad2 cp_parser_new_expression
../../gcc/gcc/cp/parser.c:7139
0x646097 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:6910
0x646b4f cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:7701
0x64700f cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:7937
0x647466 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:7987
0x647466 cp_parser_constant_expression
../../gcc/gcc/cp/parser.c:8197
0x648a36 cp_parser_late_parse_one_default_arg
../../gcc/gcc/cp/parser.c:23055
0x637c35 cp_parser_late_parsing_nsdmi
../../gcc/gcc/cp/parser.c:23109
Please submit a full bug report, [etc.]
