[clang] Fix: Issue #165239 — resolve -Wuninitialized warnings (PR #166991)

[Yanzuo Liu via cfe-commits]

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@@ -414,6 +414,13 @@ Improvements to Clang's diagnostics
 - Clang now emits a diagnostic in case `vector_size` or `ext_vector_type`
   attributes are used with a negative size (#GH165463).
 
+- Fixed: ``-Wuninitialized`` now emits a warning for uninitialized fixed-size local arrays. For example:
+
+  .. code-block:: c
+
+     int arr[4];
+     int x = arr[2]; // warning: variable 'arr' is uninitialized when used here (#GH165239)
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zwuis wrote:

Reference the issue in text, not in code blocks.

https://github.com/llvm/llvm-project/pull/166991