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c++: be more strict about 'concept bool'

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Some clang folks mailed me asking about being less permissive about
'concept bool', so let's bump it up from pedwarn to permerror.

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_decl_specifier_seq): Change 'concept bool'
	diagnostic from pedwarn to permerror.
This commit is contained in:
Jason Merrill 2022-11-21 16:05:23 -05:00
parent 47d81b1b89
commit 297bbe2d0d
1 changed files with 4 additions and 4 deletions
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8
gcc/cp/parser.cc
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@ -15831,11 +15831,11 @@ cp_parser_decl_specifier_seq (cp_parser* parser,
{
cp_token *next = cp_lexer_peek_token (parser->lexer);
if (next->keyword == RID_BOOL)
pedwarn (next->location, 0, "the %<bool%> keyword is not "
"allowed in a C++20 concept definition");
permerror (next->location, "the %<bool%> keyword is not "
"allowed in a C++20 concept definition");
else
pedwarn (token->location, 0, "C++20 concept definition syntax "
"is %<concept <name> = <expr>%>");
error_at (token->location, "C++20 concept definition syntax "
"is %<concept <name> = <expr>%>");
}
/* In C++20 a concept definition is just 'concept name = expr;'