[clang] [clang] Handle constructor closures with consteval default args (PR #203554)

[Eli Friedman via cfe-commits]

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@@ -2334,6 +2334,14 @@ void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
         InheritedConstructor(Shadow, Ctor);
   }
 
+  if (unsigned NumArgs = Record.readUInt32()) {
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efriedma-quic wrote:

Testcase for serialization?  See #200994.

https://github.com/llvm/llvm-project/pull/203554