Thanks!

> On Jul 17, 2017, at 23:09 , Jens Alfke <[email protected]> wrote:
> 
> 
>> On Jul 17, 2017, at 4:37 PM, Rick Mann <[email protected]> wrote:
>> 
>> libBacktraceRecording.dylib`__gcd_queue_item_enqueue_hook_block_invoke:
> 
> That library is used by Xcode (or LLDB) to record backtraces of threads, so 
> that the debugger can later show the stack that invoked an async call.
> 
> I ran into a crash in that library once, and was told it was an Xcode bug. 
> You should probably post this one in a bug report to Apple.
> 
> You can work around the problem by turning off backtrace recording in the 
> scheme editor.
> 
> —Jens


-- 
Rick Mann
[email protected]


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