https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95972
Bug ID: 95972
Summary: ICE in check_member_template, at cp/decl2.c:570
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() { [] ( struct { b ( auto
$g++ -w bug.cc
bug.cc:1:1: error: ISO C++ forbids declaration of ‘a’ with no type
[]8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-fpermissive-fpermissive]8;;]
1 | a() { [] ( struct { b ( auto
| ^
bug.cc: In function ‘int a()’:
bug.cc:1:19: error: types may not be defined in parameter types
1 | a() { [] ( struct { b ( auto
| ^
bug.cc:2: error: expected ‘,’ or ‘...’ at end of input
bug.cc:1:29: error: expected ‘)’ at end of input
1 | a() { [] ( struct { b ( auto
| ~ ^
| )
bug.cc:1:21: 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() { [] ( struct { b ( auto
| ^
bug.cc:2: internal compiler error: in check_member_template, at cp/decl2.c:570
0x61d665 check_member_template(tree_node*)
../../gcc/cp/decl2.c:570
0x9d3490 finish_member_template_decl(tree_node*)
../../gcc/cp/pt.c:308
0x989fba finish_fully_implicit_template
../../gcc/cp/parser.c:44279
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
0x9c0bae cp_parser_lambda_declarator_opt
../../gcc/cp/parser.c:11102
0x9a8836 cp_parser_lambda_expression
../../gcc/cp/parser.c:10633
0x9a8836 cp_parser_primary_expression
../../gcc/cp/parser.c:5443
0x9b2960 cp_parser_postfix_expression
../../gcc/cp/parser.c:7296
0x99564a cp_parser_binary_expression
../../gcc/cp/parser.c:9609
0x9971ae cp_parser_assignment_expression
../../gcc/cp/parser.c:9914
0x9974d2 cp_parser_expression
../../gcc/cp/parser.c:10082
0x99a368 cp_parser_expression_statement
../../gcc/cp/parser.c:11742
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.
