From Darin's comment in bug 127447: https://bugs.webkit.org/show_bug.cgi?id=127447#c39 > > return JSStringCreateWithCharacters(0, 0); > > Writing it like this will result in a leak of every single one of these strings; needs an adopt since JSStringCreateWithCharacters needs to be balanced by a release. > > Needs to be: > return adopt(JSStringCreateWithCharacters(nullptr, 0)); There are several platform-specific files that appear to be affected.
<rdar://problem/16042120>