[flang-commits] [flang] [flang][Semantics] Introduce `-Wpass-global-variable` warning (PR #160324)

[Andre Kuhlenschmidt via flang-commits]

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@@ -149,6 +149,7 @@ LanguageFeatureControl::LanguageFeatureControl() {
   warnUsage_.set(UsageWarning::HostAssociatedIntentOutInSpecExpr);
   warnUsage_.set(UsageWarning::NonVolatilePointerToVolatile);
   warnUsage_.set(UsageWarning::RealConstantWidening);
+  warnUsage_.set(UsageWarning::PassGlobalVariable);
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akuhlens wrote:

This should definitely not be a warning enabled by default, and I probably wouldn't even want this one to fire with `-Wall`, which leads to questions about how this should be implemented. 

https://github.com/llvm/llvm-project/pull/160324