[clang] [lldb] [BoundsSafety] Introduce LateParsedAttrType AST placeholder type (PR #204125)

[Erich Keane via cfe-commits]

================
@@ -156,6 +156,9 @@ static TypeCode getTypeCodeForTypeClass(Type::TypeClass id) {
 #define TYPE_BIT_CODE(CLASS_ID, CODE_ID, CODE_VALUE) \
   case Type::CLASS_ID: return TYPE_##CODE_ID;
 #include "clang/Serialization/TypeBitCodes.def"
+  case Type::LateParsedAttr:
+    llvm_unreachable(
+        "should be replaced with a concrete type before serialization");
----------------
erichkeane wrote:

Do we not have any serialization that would happen earlier?  I know we are using serialization in a few places, so I'm a bit concerned here...

https://github.com/llvm/llvm-project/pull/204125