================
@@ -73,6 +73,23 @@ Nullability getNullabilityAnnotation(QualType Type);
/// returned.
std::optional<int> tryExpandAsInteger(StringRef Macro, const Preprocessor &PP);
+class CachedMacroValue {
----------------
Xazax-hun wrote:
I think with the optional we cannot distinguish between the case whether the
`tryExpandAsInteger` failed or it was not called yet. Here, it is part of the
type's contract that the `tryExpandAsInteger` was already called.
https://github.com/llvm/llvm-project/pull/127409
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