src/Pure/System/command_line.ML

   uninterruptible (fn restore_attributes => fn () =>
     let val rc =
       restore_attributes body () handle exn =>
         let
           val _ =
-            Output.error_msg (ML_Compiler.exn_message exn)
-              handle _ => Output.error_msg "Exception raised, but failed to print details!";
+            ML_Compiler.exn_error_message exn
+              handle _ => Output.error_message "Exception raised, but failed to print details!";
         in if Exn.is_interrupt exn then 130 else 1 end;
     in if rc = 0 then () else exit rc end) ();
 
 fun tool0 body = tool (fn () => (body (); 0));