================
@@ -1965,9 +1965,15 @@ bool Sema::buildCoroutineParameterMoves(SourceLocation
Loc) {
if (PD->getType()->isDependentType())
continue;
+ // Preserve the referenced state for unused parameter diagnostics.
----------------
ChuanqiXu9 wrote:
Readers can understand what is going on here. But they may be confused about
the motivation. Let's add a comment to explain the reasons. I mean, something
like, if we don't do so, we can't diagnose the unused parameter things.
https://github.com/llvm/llvm-project/pull/70973
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