https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84446
Bug ID: 84446
Summary: [8 Regression] ICE with broken lambda
Product: gcc
Version: 8.0
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
Target Milestone: ---
The following invalid code snippet triggers an ICE on trunk:
===============================
template<int> void foo()
{
int i,
i = [] { virtual }();
}
===============================
bug.cc: In function 'void foo()':
bug.cc:4:3: error: redeclaration of 'int i'
i = [] { virtual }();
^
bug.cc:3:7: note: 'int i' previously declared here
int i,
^
bug.cc: In lambda function:
bug.cc:4:10: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in template_class_depth, at cp/pt.c:394
i = [] { virtual }();
^
0x78a73c tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/gcc/tree.c:9385
0x635a64 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc/gcc/tree.h:3255
0x635a64 template_class_depth(tree_node*)
../../gcc/gcc/cp/pt.c:394
0x90b5c7 cp_parser_function_specifier_opt
../../gcc/gcc/cp/parser.c:13744
0x936708 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:13502
0x93bae0 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12916
0x93ca88 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12863
0x93d4b9 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:12457
0x91be7b cp_parser_statement
../../gcc/gcc/cp/parser.c:10906
0x91cdc0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
0x91d897 cp_parser_lambda_body
../../gcc/gcc/cp/parser.c:10669
0x91d897 cp_parser_lambda_expression
../../gcc/gcc/cp/parser.c:10176
0x91d897 cp_parser_primary_expression
../../gcc/gcc/cp/parser.c:5257
0x9301bc cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:7026
0x930d90 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x91117f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
0x91198a cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x913164 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x9122bb cp_parser_constant_expression
../../gcc/gcc/cp/parser.c:9760
0x9130e7 cp_parser_initializer_clause
../../gcc/gcc/cp/parser.c:21890
Please submit a full bug report, [etc.]
The regression was introduced between 2017-08-19 and 2017-09-02.
