[clang] [clang][ExprConst] Support virtual bases in C++26 (PR #204289)

[Yihan Wang via cfe-commits]

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@@ -5468,22 +5531,44 @@ static bool handleDefaultInitValue(QualType T, APValue &Result) {
       Result = APValue((const FieldDecl *)nullptr);
       return true;
     }
+
+    // bases() includes directly specified virtual bases as well.
+    unsigned NonVirtualBases =
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yronglin wrote:

Same as below

https://github.com/llvm/llvm-project/pull/204289