http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58664
Bug ID: 58664
Summary: [c++11] ICE initializing array of incomplete type
within union
Product: gcc
Version: unknown
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++11") triggers an ICE
since GCC 4.7.0 (when non-static data member initializers were introduced):
=====================
union U
{
U u[1] = { 0 };
};
=====================
bug.cc:1:7: internal compiler error: Segmentation fault
union U
^
0xaef9cf crash_signal
../../gcc/gcc/toplev.c:335
0x90292f contains_struct_check
../../gcc/gcc/tree.h:2722
0x90292f size_binop_loc(unsigned int, tree_code, tree_node*, tree_node*)
../../gcc/gcc/fold-const.c:1497
0xae7199 place_union_field
../../gcc/gcc/stor-layout.c:1038
0xae7199 place_field(record_layout_info_s*, tree_node*)
../../gcc/gcc/stor-layout.c:1101
0x5e8b3a layout_nonempty_base_or_field
../../gcc/gcc/cp/class.c:4020
0x5f8935 layout_class_type
../../gcc/gcc/cp/class.c:6082
0x60402c finish_struct_1(tree_node*)
../../gcc/gcc/cp/class.c:6419
0x6063b4 finish_struct(tree_node*, tree_node*)
../../gcc/gcc/cp/class.c:6713
0x635a1b cp_parser_class_specifier_1
../../gcc/gcc/cp/parser.c:18903
0x638370 cp_parser_class_specifier
../../gcc/gcc/cp/parser.c:19111
0x638370 cp_parser_type_specifier
../../gcc/gcc/cp/parser.c:14090
0x64d879 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:11337
0x651929 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:10927
0x653950 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:10876
0x65c97e cp_parser_declaration
../../gcc/gcc/cp/parser.c:10773
0x65b6ea cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:10659
0x65cfb6 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:3939
0x65cfb6 c_parse_file()
../../gcc/gcc/cp/parser.c:28911
0x770ac3 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]
