[Bug c++/60251] New: [4.9 Regression] [c++11] ICE capturing variable-length array
reichelt at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Feb 17 21:34:00 GMT 2014
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60251
Bug ID: 60251
Summary: [4.9 Regression] [c++11] ICE capturing variable-length
array
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
The following valid code snippet (compiled with "-std=c++11") triggers
an ICE on trunk:
====================================
void foo(int n)
{
int x[n];
[&x]() { decltype(x) y; };
}
====================================
bug.cc: In lambda function:
bug.cc:4:21: internal compiler error: in is_normal_capture_proxy, at
cp/lambda.c:258
[&x]() { decltype(x) y; };
^
0x7a28d0 is_normal_capture_proxy(tree_node*)
../../gcc/gcc/cp/lambda.c:258
0x7a69bc is_lambda_ignored_entity(tree_node*)
../../gcc/gcc/cp/lambda.c:1076
0x77b6ef qualify_lookup
../../gcc/gcc/cp/name-lookup.c:4270
0x7805fc lookup_name_real_1
../../gcc/gcc/cp/name-lookup.c:4798
0x7805fc lookup_name_real(tree_node*, int, int, bool, int, int)
../../gcc/gcc/cp/name-lookup.c:4883
0x6a1276 cp_parser_lookup_name
../../gcc/gcc/cp/parser.c:22231
0x6b37b2 cp_parser_lookup_name_simple
../../gcc/gcc/cp/parser.c:22294
0x6b37b2 cp_parser_decltype_expr
../../gcc/gcc/cp/parser.c:11854
0x6b37b2 cp_parser_decltype
../../gcc/gcc/cp/parser.c:12003
0x6cb40f cp_parser_simple_type_specifier
../../gcc/gcc/cp/parser.c:14533
0x6a942d cp_parser_type_specifier
../../gcc/gcc/cp/parser.c:14380
0x6c2b40 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:11547
0x6c9739 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:11137
0x6acc03 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:11086
0x6add21 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:10733
0x6ae36b cp_parser_statement
../../gcc/gcc/cp/parser.c:9467
0x6af159 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:9745
0x6b07ce cp_parser_lambda_body
../../gcc/gcc/cp/parser.c:9249
0x6b07ce cp_parser_lambda_expression
../../gcc/gcc/cp/parser.c:8757
0x6b07ce cp_parser_primary_expression
../../gcc/gcc/cp/parser.c:4305
Please submit a full bug report, [etc.]
The code compiles fine, if I capture '[&]' instead of '[&x]'.
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