Adding an improvement by joerg.schaible@gmx.de, plus a new section.

js/tests/ecma_3/Exceptions/regress-181914.js

@@ -58,9 +58,8 @@ function _Error(msg)
 {
   this.message = msg;
 }
+_Error.prototype = new Error();
 _Error.prototype.name = '_Error';
-_Error.prototype.message = '';
-_Error.prototype.toString = function() {return this.name + ': ' + this.message;};
 
 
 // derive MyApplyError from _Error
@@ -135,6 +134,21 @@ actual = examineThis(err7, 'msg7');
 expect = EXPECTED_FORMAT;
 addThis();
 
+status = inSection(8);
+var err8;
+try
+{
+  throw MyApplyError('msg8');
+}
+catch(e)
+{
+  if(e instanceof Error)
+    err8 = e;
+}
+actual = examineThis(err8, 'msg8');
+expect = EXPECTED_FORMAT;
+addThis();
+
 
 
 //-----------------------------------------------------------------------------