https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89421
Bug ID: 89421
Summary: [9 Regression] ICE in retrieve_specialization, at
cp/pt.c:1245
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Changed between 20181111 and 20181118 :
$ cat z1.cc
template < //>
auto c = []{ return []{}; }();
$ g++-9-20190217 -c z1.cc
z1.cc:2:29: internal compiler error: Segmentation fault
2 | auto c = []{ return []{}; }();
| ^
0xe32b7f crash_signal
../../gcc/toplev.c:326
0x7c6c75 tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/tree.h:3175
0x7c6c75 retrieve_specialization
../../gcc/cp/pt.c:1245
0x815564 instantiate_decl(tree_node*, bool, bool)
../../gcc/cp/pt.c:24335
0x6ef537 maybe_instantiate_decl
../../gcc/cp/decl2.c:5281
0x6f221c mark_used(tree_node*, int)
../../gcc/cp/decl2.c:5437
0x627aba build_over_call
../../gcc/cp/call.c:7945
0x63b0a8 build_op_call_1
../../gcc/cp/call.c:4671
0x63b0a8 build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
../../gcc/cp/call.c:4700
0x83c0b3 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/cp/semantics.c:2586
0x78cad6 cp_parser_postfix_expression
../../gcc/cp/parser.c:7373
0x79bc95 cp_parser_unary_expression
../../gcc/cp/parser.c:8459
0x77347f cp_parser_cast_expression
../../gcc/cp/parser.c:9345
0x773c92 cp_parser_binary_expression
../../gcc/cp/parser.c:9446
0x774da9 cp_parser_assignment_expression
../../gcc/cp/parser.c:9742
0x774705 cp_parser_constant_expression
../../gcc/cp/parser.c:10026
0x774d51 cp_parser_initializer_clause
../../gcc/cp/parser.c:22702
0x779737 cp_parser_initializer
../../gcc/cp/parser.c:22642
0x79e683 cp_parser_default_argument
../../gcc/cp/parser.c:22537
0x79e683 cp_parser_parameter_declaration
../../gcc/cp/parser.c:22430
