src/third_party/mozjs-45/js/src/jit-test/tests/auto-regress/bug722021.js

// Binary: cache/js-dbg-64-8a59519e137e-linux
// Flags: -m -n -a
//

var a = [];
for (let j = 0; j < 5; ++j) {
    a.push(-2 in (a));
}