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23
24description(
25"Tests that the DFG doesn't crash if we constant fold the first read of a local variable in a block that is the result of merging two blocks, where the first doesn't touch the local and the second reads it."
26);
27
28function foo(x, y) {
29    var o = {};
30    if (y == 5) {
31        o.f = 42;
32    }
33    var z = o.f;
34    if (x == 5) {
35        if (y == 5) {
36            return z;
37        }
38    }
39}
40
41function bar(x) {
42    return foo(x, 5);
43}
44
45for (var i = 0; i < 200; ++i)
46    shouldBe("bar(5)", "42");
47