Re-re-land "[es6] Implement destructuring binding in try/catch"

test/mjsunit/harmony/destructuring.js

Index: test/mjsunit/harmony/destructuring.js
diff --git a/test/mjsunit/harmony/destructuring.js b/test/mjsunit/harmony/destructuring.js
index 904058618ad23cb5520bba639a8fb14615b2c5ca..7192d7aa5b1cf05fcb51fe096eaf96d1ab06332b 100644
--- a/test/mjsunit/harmony/destructuring.js
+++ b/test/mjsunit/harmony/destructuring.js
@@ -1098,8 +1098,36 @@
     function(){ eval("(class{foo(a, {}) {'use strict';}});") }, SyntaxError);
 })();
 
+
 (function TestLegacyConstDestructuringInForLoop() {
   var result;
   for (const {foo} of [{foo: 1}]) { result = foo; }
   assertEquals(1, result);
 })();
+
+
+(function TestCatch() {
+  "use strict";
+
+  // For testing proper scoping.
+  var foo = "hello", bar = "world", baz = 42;
+
+  try {
+    throw {foo: 1, bar: 2};
+  } catch ({foo, bar, baz = 3}) {
+    assertEquals(1, foo);
+    assertEquals(2, bar);
+    assertEquals(3, baz);
+  }
+
+  try {
+    throw [1, 2, 3];
+  } catch ([foo, ...bar]) {
+    assertEquals(1, foo);
+    assertEquals([2, 3], bar);
+  }
+
+  assertEquals("hello", foo);
+  assertEquals("world", bar);
+  assertEquals(42, baz);
+})();