[clang] Rewrite offsetof with __builtin_offsetof with -fms-kernel (PR #193804)

[via cfe-commits]

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@@ -0,0 +1,114 @@
+// This one of two tests which failed when LLVM test suite
+// Replacing offsetof with __builtin_offsetof slightly affects
+// warning messages. Compare with Sema/struct-decl.c 
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eleviant wrote:

With approach suggested by @AaronBallman (PseudoObjectExpr) compiler warnings stay the same, so both tests are no longer needed

https://github.com/llvm/llvm-project/pull/193804