diff options
Diffstat (limited to 'clang/lib/Parse/ParseDecl.cpp')
| -rw-r--r-- | clang/lib/Parse/ParseDecl.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp index 274ee7b..5f26b5a 100644 --- a/clang/lib/Parse/ParseDecl.cpp +++ b/clang/lib/Parse/ParseDecl.cpp @@ -7660,8 +7660,21 @@ void Parser::ParseParameterDeclarationClause( // Parse a C++23 Explicit Object Parameter // We do that in all language modes to produce a better diagnostic. SourceLocation ThisLoc; - if (getLangOpts().CPlusPlus && Tok.is(tok::kw_this)) + if (getLangOpts().CPlusPlus && Tok.is(tok::kw_this)) { ThisLoc = ConsumeToken(); + // C++23 [dcl.fct]p6: + // An explicit-object-parameter-declaration is a parameter-declaration + // with a this specifier. An explicit-object-parameter-declaration + // shall appear only as the first parameter-declaration of a + // parameter-declaration-list of either: + // - a member-declarator that declares a member function, or + // - a lambda-declarator. + // + // The parameter-declaration-list of a requires-expression is not such + // a context. + if (DeclaratorCtx == DeclaratorContext::RequiresExpr) + Diag(ThisLoc, diag::err_requires_expr_explicit_object_parameter); + } ParseDeclarationSpecifiers(DS, /*TemplateInfo=*/ParsedTemplateInfo(), AS_none, DeclSpecContext::DSC_normal, |