[clang] [Sema] Add check for bitfield assignments to larger integral types (PR #68276)

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@@ -185,6 +185,9 @@ New Compiler Flags
   the preprocessed text to the output. This can greatly reduce the size of the
   preprocessed output, which can be helpful when trying to reduce a test case.
 
+* ``-conversion-bitfield-assign`` was added to detect assignments of integral
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vabridgers wrote:

thanks for seeing that :) fixed.

https://github.com/llvm/llvm-project/pull/68276