Fix weakrefs when adding a key to the same container multiple times (#3343)

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu

tests/jerry/es2015/weakmap.js

@@ -110,6 +110,24 @@ gc();
 m1 = undefined;
 gc();
 
+m1 = new WeakMap();
+m1.set(k1, "str");
+m1.set(k1, "4");
+m1.set(k1, null);
+m1.set(k1, 42);
+print (m1.has (k1));
+k1 = {};
+gc();
+
+m1 = new WeakMap();
+m1.set(k1, "str");
+m1.set(k1, "4");
+m1.set(k1, 42);
+m1.set(k1, null);
+assert (m1.has (k1));
+m1 = new WeakMap();
+gc();
+
 try {
   new WeakMap([[1,2],[3,4]]);
   assert (false);

tests/jerry/es2015/weakset.js

@@ -95,6 +95,23 @@ gc();
 m1 = undefined;
 gc();
 
+m1 = new WeakSet();
+k1 = {};
+m1.add (k1);
+m1.add (k1);
+m1.add (k1);
+assert (m1.has (k1));
+k1 = {};
+gc();
+
+m1 = new WeakSet();
+m1.add (k1);
+m1.add (k1);
+m1.add (k1);
+assert (m1.has (k1));
+m1 = new WeakSet();
+gc();
+
 try {
   new WeakSet([1,2,3,4]);
   assert (false);