Ned Deily added the comment:
I can reproduce a crash with your sample program using the current numpy wheel
(1.9.2) and the python.org 3.4.3. The significant parts of the OS X crash dump:
Crashed Thread:0 Dispatch queue: com.apple.main-thread
Exception Type:EXC_BAD_ACCESS
New submission from OceanEngineer:
Attached file runs fine. Uncommenting line 19 makes python crash. Also, no
crash happens if order of execution of map() and executor.map() is switched.
This problem seems to be related to numpy in some way, the code does not crash
if the commented return of
