https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95927
Bug ID: 95927
Summary: ICE in cp_lexer_new_from_tokens, at cp/parser.c:701
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, reduced by C-Reduce, makes GCC ICE.
$cat bug.cc
class {
struct a < struct { b ( {
$g++ bug.cc
bug.cc:2:8: error: ‘a’ is not a class template
2 | struct a < struct { b ( {
| ^
bug.cc:2:19: error: types may not be defined in template arguments
2 | struct a < struct { b ( {
| ^
bug.cc:2:25: error: expected identifier before ‘{’ token
2 | struct a < struct { b ( {
| ^
bug.cc:2:24: error: expected ‘)’ before ‘{’ token
2 | struct a < struct { b ( {
| ~^~
| )
bug.cc:2:21: error: ISO C++ forbids declaration of ‘b’ with no type
[]8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-fpermissive-fpermissive]8;;]
2 | struct a < struct { b ( {
| ^
bug.cc:3: error: expected ‘}’ at end of input
bug.cc:2:19: note: to match this ‘{’
2 | struct a < struct { b ( {
| ^
bug.cc:3: error: expected template-argument at end of input
bug.cc:3: error: expected ‘>’ at end of input
bug.cc:3: error: expected ‘{’ or ‘:’ at end of input
bug.cc:3: error: expected ‘{’ at end of input
bug.cc:3: error: expected unqualified-id at end of input
bug.cc:3: error: expected ‘}’ at end of input
bug.cc:1:7: note: to match this ‘{’
1 | class {
| ^
bug.cc:3: internal compiler error: in cp_lexer_new_from_tokens, at
cp/parser.c:701
0x641d4d cp_parser_push_lexer_for_tokens
../../gcc/cp/parser.c:701
0x9c2bc5 cp_parser_late_parsing_for_member
../../gcc/cp/parser.c:29944
0x9a0ccb cp_parser_class_specifier_1
../../gcc/cp/parser.c:24230
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
0x9a35c1 cp_parser_simple_declaration
../../gcc/cp/parser.c:13664
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.
