src/third_party/mozjs-45/js/src/jit-test/tests/auto-regress/bug698899.js

// Binary: cache/js-dbg-32-f951e9151626-linux
// Flags: -m -n
//
o = evalcx("lazy").__proto__
gc()
try {
    o.watch()
} catch (e) {}
o.constructor()