[clang] [clang] Fix static_cast bypassing access control (PR #132285)

[via cfe-commits]

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@@ -23,3 +22,66 @@ void test(A &a, B &b) {
   const A &&ar10 = static_cast<const A&&>(xvalue<A>());
   const A &&ar11 = static_cast<const A&&>(xvalue<B>());
 }
+
+struct C : private A { // expected-note 4 {{declared private here}}
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offsetof wrote:

Added a namespace.

https://github.com/llvm/llvm-project/pull/132285