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var m = new Map;
var s = new Set;
var A = [];
for (var i = 0; i < 1024; ++i) {
var key = {i:i};
m.set(key, i);
s.add(key);
A.push(key);
}
gc();
for (var i in A) {
var key = A[i];
assertEq(m.has(key), true);
assertEq(s.has(key), true);
}