• Version: v6.9.1
• Platform: Darwin watson-3.local 16.1.0 Darwin Kernel Version 16.1.0: Thu Oct 13 21:26:57 PDT 2016; root:xnu-3789.21.3~60/RELEASE_X86_64 x86_64
• Subsystem:

If using clearTimeout to clear an unreffed Timeout object returned by setInterval(...).unref() you'll get a segfault the next time the interval would normally have fired.

The following example program will segfault after 4 seconds:

// keep the event loop busy while we wait for segfault
setTimeout(function () {}, 100000)

console.log('setInterval')
var timer = setInterval(clear, 2000).unref()

function clear () {
  console.log('clear - start')

  // Use clearTimeout instead of clearInterval
  clearTimeout(timer)

  console.log('clear - end')
}

The segfault doesn't happen if the Timeout object isn't unreffed.

Even though the user should just use clearInterval instead, this at least shouldn't segfault.