[flang-commits] [flang] [flang] Avoid exponential traversal in deep type extensions (PR #191955)

[Sairudra More via flang-commits]

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@@ -0,0 +1,125 @@
+! RUN: %flang_fc1 -fsyntax-only %s 2>&1
+! Regression test: deeply nested type extensions with LEN parameters
+! must not cause exponential compile time in HasDestruction().
+
+module m
+  implicit none
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Saieiei wrote:

Added a finalizable deep-extension case to `typesstress5.f90`, so the `IsFinalizable()` path is covered as well. I also updated the test comment to reflect both paths. Thanks!

https://github.com/llvm/llvm-project/pull/191955