http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60227
Bug ID: 60227 Summary: [4.7/4.8/4.9 Regression] [C++11] ICE using brace-enclosed initializer list to initialize array Product: gcc Version: 4.9.0 Status: UNCONFIRMED Keywords: ice-on-invalid-code 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 4.6.1: ======================================================= void foo(int n) { int a[n]; int (&r)[n] = {}; } ======================================================= bug.cc: In function 'void foo(int)': bug.cc:4:18: internal compiler error: in tree_to_uhwi, at tree.c:7024 int (&r)[n] = {}; ^ 0xdc009c tree_to_uhwi(tree_node const*) ../../gcc/gcc/tree.c:7024 0x5ab42e build_array_conv ../../gcc/gcc/cp/call.c:953 0x5ab42e implicit_conversion ../../gcc/gcc/cp/call.c:1772 0x5ac526 reference_binding ../../gcc/gcc/cp/call.c:1490 0x5b787c initialize_reference(tree_node*, tree_node*, int, int) ../../gcc/gcc/cp/call.c:9377 0x5c787b grok_reference_init ../../gcc/gcc/cp/decl.c:4809 0x5c787b check_initializer ../../gcc/gcc/cp/decl.c:5676 0x5d99fc cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int) ../../gcc/gcc/cp/decl.c:6396 0x6c81bd cp_parser_init_declarator ../../gcc/gcc/cp/parser.c:16815 0x6c9979 cp_parser_simple_declaration ../../gcc/gcc/cp/parser.c:11205 0x6acc63 cp_parser_block_declaration ../../gcc/gcc/cp/parser.c:11086 0x6add81 cp_parser_declaration_statement ../../gcc/gcc/cp/parser.c:10733 0x6ae3cb cp_parser_statement ../../gcc/gcc/cp/parser.c:9467 0x6af1b9 cp_parser_statement_seq_opt ../../gcc/gcc/cp/parser.c:9745 0x6af326 cp_parser_compound_statement ../../gcc/gcc/cp/parser.c:9699 0x6c34fb cp_parser_function_body ../../gcc/gcc/cp/parser.c:18641 0x6c34fb cp_parser_ctor_initializer_opt_and_function_body ../../gcc/gcc/cp/parser.c:18677 0x6c7842 cp_parser_function_definition_after_declarator ../../gcc/gcc/cp/parser.c:22792 0x6c86e1 cp_parser_function_definition_from_specifiers_and_declarator ../../gcc/gcc/cp/parser.c:22704 0x6c86e1 cp_parser_init_declarator ../../gcc/gcc/cp/parser.c:16585 Please submit a full bug report, [etc.]