[clang] [Clang] Diagnose require_explicit_initialization for C tentative definitions (PR #234210)

[Pathri Vidya Praveen via cfe-commits]

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@@ -419,6 +419,10 @@ features cannot lower the translation-unit ABI level;
 
 ### Improvements to Clang's diagnostics
 
+- Fixed missing `-Wuninitialized-explicit-init` warnings for C file-scope
+  tentative definitions containing fields marked `require_explicit_initialization`.
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PathriVidyaPraveen wrote:

Done, thanks!

https://github.com/llvm/llvm-project/pull/234210