http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60375
Bug ID: 60375 Summary: [4.9 Regression] ICE with invalid use of lambda Product: gcc Version: 4.9.0 Status: UNCONFIRMED Keywords: error-recovery, 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 testcase (compiled with "-std=c++11") triggers an ICE on trunk: =============================================== struct A { decltype( [](){ return this; }() ) x; }; =============================================== bug.cc:3:13: error: lambda-expression in unevaluated context decltype( [](){ return this; }() ) x; ^ bug.cc: In lambda function: bug.cc:3:26: internal compiler error: Segmentation fault decltype( [](){ return this; }() ) x; ^ 0xbaa60f crash_signal ../../gcc/gcc/toplev.c:337 0x7587ed contains_struct_check ../../gcc/gcc/tree.h:2822 0x7587ed rvalue(tree_node*) ../../gcc/gcc/cp/tree.c:698 0x6b5fd2 cp_parser_primary_expression ../../gcc/gcc/cp/parser.c:4353 0x6b84cd cp_parser_postfix_expression ../../gcc/gcc/cp/parser.c:5971 0x6bb493 cp_parser_unary_expression ../../gcc/gcc/cp/parser.c:7170 0x6bc17f cp_parser_binary_expression ../../gcc/gcc/cp/parser.c:7874 0x6bc661 cp_parser_assignment_expression ../../gcc/gcc/cp/parser.c:8112 0x6bea73 cp_parser_expression ../../gcc/gcc/cp/parser.c:8274 0x6b7bf2 cp_parser_expression ../../gcc/gcc/cp/parser.c:8313 0x6b7bf2 cp_parser_lambda_body ../../gcc/gcc/cp/parser.c:9228 0x6b7bf2 cp_parser_lambda_expression ../../gcc/gcc/cp/parser.c:8757 0x6b7bf2 cp_parser_primary_expression ../../gcc/gcc/cp/parser.c:4305 0x6b84cd cp_parser_postfix_expression ../../gcc/gcc/cp/parser.c:5971 0x6b9a3e cp_parser_decltype_expr ../../gcc/gcc/cp/parser.c:11904 0x6b9a3e cp_parser_decltype ../../gcc/gcc/cp/parser.c:12003 0x6ba117 cp_parser_qualifying_entity ../../gcc/gcc/cp/parser.c:5494 0x6ba117 cp_parser_nested_name_specifier_opt ../../gcc/gcc/cp/parser.c:5249 0x6baadb cp_parser_nested_name_specifier ../../gcc/gcc/cp/parser.c:5448 0x6b2cd3 cp_parser_using_declaration ../../gcc/gcc/cp/parser.c:15938 Please submit a full bug report, [etc.]