Pthread RWLock on MAC Deadlocking but not on Linux?

Question

I've been experimenting with rwlock's on Mac and am experiencing something that seems to me shouldn't be happening. There's some weird combination of using read/write locks with recursive read locks that is deadlocking, but shouldn't be.

I posted the code on pastebin because it's more than just a snippet. The way this code is written shouldn't deadlock, and indeed doesn't when running on linux. Why does this deadlock on a mac?

http://pastebin.com/Ui9iS1ke

Any ideas?

Answer 1

See the bug I reported with apple.

https://bugreport.apple.com/cgi-bin/WebObjects/RadarWeb.woa/7/wo/0blX77DJS8lBTTxVnTsNDM/5.83.28.0.13

Answer 2

Here's the open radar bug.

http://openradar.appspot.com/8588290