[PATCH] Make GDBJITRegistrar thread-safe

[Ivan Puzyrevskiy]

Hi there.

While investigating a crash in GDBJITRegistrar I have stumbled upon http://llvm.org/bugs/show_bug.cgi?id=15750 . In my setting there were multiple instances of MCJIT operating in different threads.

Patch from Bugzilla applies cleanly and solves the issue. I have attached a patch against r203780, yet full credit goes to Jim Kearney (jim.kearney at oracle.com), original author of the patch.

Any chances to see this in the trunk or 3.5 release?

Best, 
Ivan
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