[Webkit-unassigned] [Bug 160337] Crash in JavaScriptCore GC when using JSC on dispatch queues (thread_get_state returns NULL stack pointer)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=160337

--- Comment #3 from Ben Nham <nham at fb.com> ---
Core OS  wrote back in <rdar://27607384>:

  Can you guys use thread_get_register_pointer_values() as an alternative?

This seems like it would fix the issue because thread_get_register_pointer_values appears to be a wrapper function around thread_get_state that a) filters out any pointers pointing to the null page and b) properly takes into account the red zone beneath the stack pointer.

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