[clang] [clang][analyzer] Forward CTU-import failure conditions (PR #189064)

[Balázs Benics via cfe-commits]

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@@ -88,6 +88,29 @@ bool hasEqualKnownFields(const llvm::Triple &Lhs, const llvm::Triple &Rhs) {
   return true;
 }
 
+/// Returns a human-readable language/dialect description for diagnostics.
+/// Checks flags from highest to lowest standard since they are cumulative
+/// (e.g. CPlusPlus20 implies CPlusPlus17).
+/// This does not cover all possible languages (e.g. Obj-C or flavors of C),
+/// because CTU currently does not differentiate between them.
+std::string getLangDescription(const LangOptions &LO) {
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steakhal wrote:

One more nail into using anon namespaces coffin.

https://github.com/llvm/llvm-project/pull/189064