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// TDZ checks work in destructuring default expressions,
// even after the variables are initialized the first time.
load(libdir + "asserts.js");
assertThrowsInstanceOf(() => {
// should throw the second time through: b is uninitialized
for (const {a=b, b} of [{a:1, b:2}, {b:3}]) {}
}, ReferenceError);
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