https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95954
Bug ID: 95954
Summary: ICE: unexpected expression ‘(a)’ of kind paren_expr
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
short a;
thread_local b ( auto , = ( a ;
$g++ -w bug.cc
bug.cc:2:25: error: expected identifier before ‘=’ token
2 | thread_local b ( auto , = ( a ;
| ^
bug.cc:2:30: error: expected ‘)’ before ‘;’ token
2 | thread_local b ( auto , = ( a ;
| ~ ^~
| )
bug.cc:2:30: error: expected ‘)’ before ‘;’ token
2 | thread_local b ( auto , = ( a ;
| ~ ^~
| )
bug.cc:2:14: 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 | thread_local b ( auto , = ( a ;
| ^
bug.cc:2:31: internal compiler error: unexpected expression ‘(a)’ of kind
paren_expr
2 | thread_local b ( auto , = ( a ;
| ^
0x8b06d4 cxx_eval_constant_expression
../../gcc/cp/constexpr.c:6503
0x8b0c1f cxx_eval_outermost_constant_expr
../../gcc/cp/constexpr.c:6708
0x8b500b maybe_constant_value(tree_node*, tree_node*, bool)
../../gcc/cp/constexpr.c:6981
0x8ddc74 cp_fully_fold(tree_node*)
../../gcc/cp/cp-gimplify.c:2464
0x8e51cf cp_convert_and_check(tree_node*, tree_node*, int)
../../gcc/cp/cvt.c:661
0x8724df convert_like_real
../../gcc/cp/call.c:7865
0x873c29 perform_implicit_conversion_flags(tree_node*, tree_node*, int, int)
../../gcc/cp/call.c:11870
0x8f887f check_default_argument(tree_node*, tree_node*, int)
../../gcc/cp/decl.c:13923
0x8f8edf grokparms(tree_node*, tree_node**)
../../gcc/cp/decl.c:14111
0x90a23b grokdeclarator(cp_declarator const*, cp_decl_specifier_seq*,
decl_context, int, tree_node**)
../../gcc/cp/decl.c:12393
0x915628 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
../../gcc/cp/decl.c:5233
0x9c1e6d cp_parser_init_declarator
../../gcc/cp/parser.c:20818
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.
