Fixed failing 4_External_Functions_A01_t01 test, updated co19-runtime.status with triaged test bug …

runtime/vm/parser.cc

Index: runtime/vm/parser.cc
diff --git a/runtime/vm/parser.cc b/runtime/vm/parser.cc
index 29e6c29055a81dfd5df00063ec3cb8cc6484a3ef..5f16e5c57ce908afa8f58b43c6900d05857b902e 100644
--- a/runtime/vm/parser.cc
+++ b/runtime/vm/parser.cc
@@ -2282,11 +2282,9 @@ SequenceNode* Parser::ParseFunc(const Function& func,
     ParseNativeFunctionBlock(&params, func);
   } else if (func.is_external()) {
     // Body of an external method contains a single throw.
+    const String& function_name = String::ZoneHandle(func.name());
     current_block_->statements->Add(
-        new ThrowNode(TokenPos(),
-            new LiteralNode(TokenPos(),
-                String::ZoneHandle(
-                    Symbols::New("External implementation missing."))), NULL));
+        ThrowNoSuchMethodError(TokenPos(), function_name));
   } else {
     UnexpectedToken();
   }