[flang-commits] [flang] [flang] Fold character array constructor with unknown length (PR #123983)

[Peter Klausler via flang-commits]

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@@ -1345,6 +1353,8 @@ template <typename T> class ArrayConstructorFolder {
 
   FoldingContext &context_;
   std::vector<Scalar<T>> elements_;
+  std::optional<ConstantSubscript> charLength_;
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klausler wrote:

`knownCharLength_` is set true if and only if the character array constructor has an explicit length (from an explicit type specifier); in this case, the known length is dispositive and the element lengths don't matter.  Otherwise, `charLength_` can change when longer elements are encountered.

https://github.com/llvm/llvm-project/pull/123983