http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59080
Bug ID: 59080
Summary: [4.9 Regression] [c++11] ICE with array of auto
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++11") triggers an ICE
on trunk:
==============================
#include <initializer_list>
auto foo[] = {};
==============================
bug.cc:3:15: internal compiler error: Segmentation fault
auto foo[] = {};
^
0xb2a93f crash_signal
../../gcc/gcc/toplev.c:334
0x5dd6f9 tree_check5
../../gcc/gcc/tree.h:2792
0x5dd6f9 unify_array_domain
../../gcc/gcc/cp/pt.c:17027
0x5d46ae unify
../../gcc/gcc/cp/pt.c:17198
0x5ddf46 unify_one_argument
../../gcc/gcc/cp/pt.c:16100
0x5d2e73 type_unification_real
../../gcc/gcc/cp/pt.c:16172
0x5e6b82 do_auto_deduction(tree_node*, tree_node*, tree_node*)
../../gcc/gcc/cp/pt.c:21402
0x57846c cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/gcc/cp/decl.c:6162
0x6661b1 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:16693
0x66791f cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:11107
0x64b820 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:10988
0x66f2e7 cp_parser_declaration
../../gcc/gcc/cp/parser.c:10885
0x66e008 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:10771
0x66f896 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4007
0x66f896 c_parse_file()
../../gcc/gcc/cp/parser.c:31107
0x790973 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1055
Please submit a full bug report, [etc.]
The regression appeared between 4.9.0 20131012 and 4.9.0 20131019.
