[clang] [clang] Add tests for CWG issues regarding completeness of types (PR #92113)

[Vlad Serebrennikov via cfe-commits]

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@@ -451,6 +463,25 @@ static_assert(!__is_nothrow_constructible(D4, int), "");
 #endif
 } // namespace cwg1350
 
+namespace cwg1352 { // cwg1352: 3.0
+struct A {
+#if __cplusplus >= 201103L
+  int a = sizeof(A);
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Endilll wrote:

It's not going to fail for static member initializers because of (I suspect) subsequent changes that were made to the wording: http://eel.is/c++draft/class.mem.general#8.5

https://github.com/llvm/llvm-project/pull/92113