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// Iterating over the argument to WeakMap can throw. The exception is
// propagated.
load(libdir + "asserts.js");
function* data() {
yield [{}, "XR22/Z"];
yield [{}, "23D-BN"];
throw "oops";
}
var it2 = data();
assertThrowsValue(() => new WeakMap(it2), "oops");