================
@@ -1965,9 +1965,15 @@ bool Sema::buildCoroutineParameterMoves(SourceLocation
Loc) {
if (PD->getType()->isDependentType())
continue;
+ // Preserve the referenced state for unused parameter diagnostics.
+ bool DeclReferenced = PD->isReferenced();
+
ExprResult PDRefExpr =
BuildDeclRefExpr(PD, PD->getType().getNonReferenceType(),
ExprValueKind::VK_LValue, Loc); // FIXME: scope?
+
+ PD->setReferenced(DeclReferenced);
----------------
yuxuanchen1997 wrote:
`BuildDeclRefExpr` builds a `DeclRef` `Expr` and marks the referenced `Decl` as
`Referenced`.
https://github.com/llvm/llvm-project/pull/70973
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