[clang] [AST] Add dump() method to TypeLoc (PR #65484)

[Aaron Ballman via cfe-commits]

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@@ -415,9 +443,55 @@ class ASTNodeTraverser
     if (!T->isSugared())
       Visit(T->getPattern());
   }
+  void VisitAutoType(const AutoType *T) {
+    for (const auto &Arg : T->getTypeConstraintArguments())
+      Visit(Arg);
+  }
   // FIXME: ElaboratedType, DependentNameType,
   // DependentTemplateSpecializationType, ObjCObjectType
 
+  // For TypeLocs, we automatically visit the inner type loc (pointee type etc).
+  // We must explicitly visit other lexically-nested nodes.
+  void VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
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AaronBallman wrote:

Do we need to explicitly visit the return type? (It would be good to have a test case with a function declaration with a regular return type and one with a trailing return type, and probably another test with a lambda expression. Also good to have a test case involving a function template.)

What about things like exception specifications? e.g., `void func() throw(int);`

https://github.com/llvm/llvm-project/pull/65484