[lld] [libcxxabi] [openmp] [flang] [clang-tools-extra] [mlir] [libc] [libcxx] [llvm] [clang] [lldb] [libunwind] [polly] [compiler-rt] Make clang report invalid target versions. (PR #75373)

[Fangrui Song via cfe-commits]

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@@ -786,4 +786,7 @@ def warn_android_unversioned_fallback : Warning<
   " directories will not be used in Clang 19. Provide a versioned directory"
   " for the target version or lower instead.">,
   InGroup<DiagGroup<"android-unversioned-fallback">>;
+
+def err_android_version_invalid : Error<
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MaskRay wrote:

You can name it `err_triple_version_invalid` in case other OSes want to do the same checking.

https://github.com/llvm/llvm-project/pull/75373