5286b0761b
For template parameters, the optional this specifier is in the grammar
template-parameter-list -> template-parameter -> parameter-declaration,
just [dcl.fct/6] says that it is only valid in parameter-list of certain
functions. So, unlike the case of decl-specifier-seq used in non-terminals
other than parameter-declaration, I think it is better not to fix this
by
cp_parser_decl_specifier_seq (parser,
- flags | CP_PARSER_FLAGS_PARAMETER,
+ flags | (template_parameter_p ? 0
+ : CP_PARSER_FLAGS_PARAMETER),
&decl_specifiers,
&declares_class_or_enum);
which would be pretending it isn't in the grammar, but by diagnosing it
separately, which is what the following patch does.
2024-02-16 Jakub Jelinek <jakub@redhat.com>
PR c++/113929
* parser.cc (cp_parser_parameter_declaration): Diagnose this specifier
on template parameter declaration.
* g++.dg/parse/pr113929.C: New test.
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