https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95956
Bug ID: 95956
Summary: ICE in check_bases, at cp/class.c:1689
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: error-recovery, 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, reduced by C-Reduce, makes GCC-trunk ICE.
$cat bug.cc
a ( auto struct : decltype ( auto ) { {
$g++ bug.cc
bug.cc:1:5: warning: use of ‘auto’ in parameter declaration only available with
‘-fconcepts-ts’
1 | a ( auto struct : decltype ( auto ) { {
| ^~~~
bug.cc:1:38: error: types may not be defined in parameter types
1 | a ( auto struct : decltype ( auto ) { {
| ^
bug.cc:1:40: error: expected unqualified-id before ‘{’ token
1 | a ( auto struct : decltype ( auto ) { {
| ^
bug.cc:2: error: expected ‘}’ at end of input
bug.cc:1:38: note: to match this ‘{’
1 | a ( auto struct : decltype ( auto ) { {
| ^
bug.cc:1:17: internal compiler error: in check_bases, at cp/class.c:1689
1 | a ( auto struct : decltype ( auto ) { {
| ^
0x5ed0ac check_bases
../../gcc/cp/class.c:1689
0x5ed0ac check_bases_and_members
../../gcc/cp/class.c:5900
0x89eca3 finish_struct_1(tree_node*)
../../gcc/cp/class.c:7269
0x8a06d4 finish_struct(tree_node*, tree_node*)
../../gcc/cp/class.c:7573
0x99f973 cp_parser_class_specifier_1
../../gcc/cp/parser.c:23955
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.
