https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95945
Bug ID: 95945
Summary: ICE in poplevel, at cp/decl.c:585
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: haoxintu at gmail dot com
Target Milestone: ---
This code, bug.cc, reduce by C-Reduce, makes GCC-trunk ICE.
$cat bug.cc
a ( auto struct { b (
$g++ -w bug.cc
bug.cc:1:17: error: types may not be defined in parameter types
1 | a ( auto struct { b (
| ^
bug.cc:3: error: expected identifier at end of input
bug.cc:3: error: expected ‘,’ or ‘...’ at end of input
bug.cc:1:22: error: expected ‘)’ at end of input
1 | a ( auto struct { b (
| ~^
| )
2 |
bug.cc:1:19: error: ISO C++ forbids declaration of ‘b’ with no type
[]8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-fpermissive-fpermissive]8;;]
1 | a ( auto struct { b (
| ^
bug.cc:3: internal compiler error: in poplevel, at cp/decl.c:585
0x6184a0 poplevel(int, int, int)
../../gcc/cp/decl.c:585
0x9d75b8 end_template_decl()
../../gcc/cp/pt.c:4688
0x989fc2 finish_fully_implicit_template
../../gcc/cp/parser.c:44280
0x9cb99a cp_parser_member_declaration
../../gcc/cp/parser.c:25414
0x99f921 cp_parser_member_specification_opt
../../gcc/cp/parser.c:24850
0x99f921 cp_parser_class_specifier_1
../../gcc/cp/parser.c:23947
0x9a1aa3 cp_parser_class_specifier
../../gcc/cp/parser.c:24254
0x9a1aa3 cp_parser_type_specifier
../../gcc/cp/parser.c:17762
0x9a2a02 cp_parser_decl_specifier_seq
../../gcc/cp/parser.c:14410
0x9bf3ef cp_parser_parameter_declaration
../../gcc/cp/parser.c:22818
0x9bfdd2 cp_parser_parameter_declaration_list
../../gcc/cp/parser.c:22641
0x9c01bc cp_parser_parameter_declaration_clause
../../gcc/cp/parser.c:22568
0x9ad617 cp_parser_direct_declarator
../../gcc/cp/parser.c:21245
0x9ad617 cp_parser_declarator
../../gcc/cp/parser.c:21109
0x9c1ba6 cp_parser_init_declarator
../../gcc/cp/parser.c:20609
0x9a36d2 cp_parser_simple_declaration
../../gcc/cp/parser.c:13785
0x9cc926 cp_parser_declaration
../../gcc/cp/parser.c:13484
0x9cd06a cp_parser_translation_unit
../../gcc/cp/parser.c:4761
0x9cd06a c_parse_file()
../../gcc/cp/parser.c:44043
0xae4dbb c_common_parse_file()
../../gcc/c-family/c-opts.c:1190
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$g++ --version
g++ (GCC) 11.0.0 20200626 (experimental)
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
This issue may related to bug 90842, bug 92447, and bug 94829, but according to
the backtrace, I guess it's not the same with them.
