[flang-commits] [flang] [Flang] Avoid crash when a function return is undefined (PR #151577)

[Carlos Seo via flang-commits]

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@@ -1733,6 +1733,13 @@ class FirConverter : public Fortran::lower::AbstractConverter {
     mlir::Location loc = toLocation();
     if (!resultSymBox) {
       mlir::emitError(loc, "internal error when processing function return");
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ceseo wrote:

Hm... I think you may be right. Returning `undef` and emitting a warning seems the right thing to do.

https://github.com/llvm/llvm-project/pull/151577