https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84652
Bug ID: 84652
Summary: internal compiler error: in cp_parser_template_id, at
cp/parser.c:15860
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: vegard.nossum at gmail dot com
Target Milestone: ---
Input:
template<int>
int a(a<class b {}>);
Output:
$ xgcc -x c++ -S -
<stdin>:2:17: error: types may not be defined in template arguments
<stdin>:2:19: error: expected ';' after class definition
<stdin>:2:18: error: expected template-argument before ';' token
<stdin>:2:18: error: expected '>' before ';' token
<stdin>:2:18: internal compiler error: in cp_parser_template_id, at
cp/parser.c:15860
0xf4b7eb cp_parser_template_id
/home/vegard/git/gcc/gcc/cp/parser.c:15858
0xf4bc5a cp_parser_class_name
/home/vegard/git/gcc/gcc/cp/parser.c:22364
0xf7fc4d cp_parser_qualifying_entity
/home/vegard/git/gcc/gcc/cp/parser.c:6583
0xf7fc4d cp_parser_nested_name_specifier_opt
/home/vegard/git/gcc/gcc/cp/parser.c:6267
0xf31bf5 cp_parser_simple_type_specifier
/home/vegard/git/gcc/gcc/cp/parser.c:17168
0xf7a096 cp_parser_postfix_expression
/home/vegard/git/gcc/gcc/cp/parser.c:6949
0xf2e057 cp_parser_unary_expression
/home/vegard/git/gcc/gcc/cp/parser.c:8320
0xec31aa cp_parser_cast_expression
/home/vegard/git/gcc/gcc/cp/parser.c:9088
0xec57d6 cp_parser_binary_expression
/home/vegard/git/gcc/gcc/cp/parser.c:9189
0xec95aa cp_parser_assignment_expression
/home/vegard/git/gcc/gcc/cp/parser.c:9484
0xecf383 cp_parser_constant_expression
/home/vegard/git/gcc/gcc/cp/parser.c:9768
0xed6a4b cp_parser_parenthesized_expression_list
/home/vegard/git/gcc/gcc/cp/parser.c:7756
0xedf59c cp_parser_initializer
/home/vegard/git/gcc/gcc/cp/parser.c:21855
0xfa4eed cp_parser_init_declarator
/home/vegard/git/gcc/gcc/cp/parser.c:19668
0xfa75c9 cp_parser_single_declaration
/home/vegard/git/gcc/gcc/cp/parser.c:27272
0xfc93d8 cp_parser_template_declaration_after_parameters
/home/vegard/git/gcc/gcc/cp/parser.c:26867
0xfc79db cp_parser_explicit_template_declaration
/home/vegard/git/gcc/gcc/cp/parser.c:27105
0xfc79db cp_parser_template_declaration_after_export
/home/vegard/git/gcc/gcc/cp/parser.c:27123
0x1003081 cp_parser_declaration
/home/vegard/git/gcc/gcc/cp/parser.c:12727
0xff9bdb cp_parser_declaration_seq_opt
/home/vegard/git/gcc/gcc/cp/parser.c:12654
$ xgcc --version
xgcc (GCC) 8.0.1 20180301 (experimental)
Built from git c435a9e730c6e8f10da09d58b4fc9aaeb401b0d5 (r258097).
It seems to have been introduced between 5.1 and 5.2.
Test case was minimised by C-Reduce.
