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 (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000110

VM Regions Near 0x110:
--> 
    __TEXT                 0000000100000000-0000000100001000 [    4K] r-x/rwx SM=COW  /Library/Frameworks/Python.framework/Versions/3.4.3_10_6/Resources/Python.app/Contents/MacOS/Python

Application Specific Information:
crashed on child side of fork pre-exec

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libdispatch.dylib             	0x00007fff97347c13 dispatch_group_async + 533
1   libBLAS.dylib                 	0x00007fff96271a67 dsyrk_r + 565
2   libBLAS.dylib                 	0x00007fff96272183 APL_dsyrk + 370
3   libBLAS.dylib                 	0x00007fff96370696 cblas_dgemm + 1144
4   _dotblas.so                   	0x0000000104216775 dotblas_matrixproduct + 5733
5   org.python.python             	0x00000001000e44ce PyEval_EvalFrameEx + 28894
6   org.python.python             	0x00000001000e5ced PyEval_EvalCodeEx + 2349
7   org.python.python             	0x000000010003e8ba function_call + 186
8   org.python.python             	0x000000010000d3c8 PyObject_Call + 104
9   org.python.python             	0x00000001000e0cb9 PyEval_EvalFrameEx + 14537
10  org.python.python             	0x00000001000e5ced PyEval_EvalCodeEx + 2349
11  org.python.python             	0x000000010003e8ba function_call + 186
12  org.python.python             	0x000000010000d3c8 PyObject_Call + 104
13  org.python.python             	0x00000001000e0cb9 PyEval_EvalFrameEx + 14537
14  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
15  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
16  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
17  org.python.python             	0x00000001000e5ced PyEval_EvalCodeEx + 2349
18  org.python.python             	0x000000010003e8ba function_call + 186
19  org.python.python             	0x000000010000d3c8 PyObject_Call + 104
20  org.python.python             	0x000000010002802c method_call + 140
21  org.python.python             	0x000000010000d3c8 PyObject_Call + 104
22  org.python.python             	0x000000010007b831 slot_tp_init + 81
23  org.python.python             	0x0000000100072d14 type_call + 212
24  org.python.python             	0x000000010000d3c8 PyObject_Call + 104
25  org.python.python             	0x00000001000e1b09 PyEval_EvalFrameEx + 18201
26  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
27  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
28  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
29  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
30  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
31  org.python.python             	0x00000001000e5ced PyEval_EvalCodeEx + 2349
32  org.python.python             	0x000000010003e8ba function_call + 186
33  org.python.python             	0x000000010000d3c8 PyObject_Call + 104
34  org.python.python             	0x00000001000e0cb9 PyEval_EvalFrameEx + 14537
35  org.python.python             	0x00000001000e5ced PyEval_EvalCodeEx + 2349
36  org.python.python             	0x00000001000e4306 PyEval_EvalFrameEx + 28438
37  org.python.python             	0x00000001000e5ced PyEval_EvalCodeEx + 2349
38  org.python.python             	0x00000001000e4306 PyEval_EvalFrameEx + 28438
39  org.python.python             	0x00000001000e4455 PyEval_EvalFrameEx + 28773
40  org.python.python             	0x00000001000e5ced PyEval_EvalCodeEx + 2349
41  org.python.python             	0x00000001000e5daf PyEval_EvalCode + 63
42  org.python.python             	0x000000010011048e PyRun_FileExFlags + 206
43  org.python.python             	0x000000010011083d PyRun_SimpleFileExFlags + 717
44  org.python.python             	0x000000010012810e Py_Main + 3262
45  org.python.python             	0x0000000100000e32 0x100000000 + 3634
46  org.python.python             	0x0000000100000c84 0x100000000 + 3204

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000105001480  rbx: 0x0000000000000000  rcx: 0x0000000000000000  rdx: 0x0000000000000100
  rdi: 0x00007fff7cd5fd40  rsi: 0x0000000000000000  rbp: 0x00007fff5bffbbd0  rsp: 0x00007fff5bffbba0
   r8: 0x0000000105001400   r9: 0x0000000000000000  r10: 0x00000000000007d0  r11: 0xffff8001a446c4d8
  r12: 0x00000001004682b0  r13: 0x0000000100437210  r14: 0x00007fff97341317  r15: 0x0000000000002000
  rip: 0x00007fff97347c13  rfl: 0x0000000000010206  cr2: 0x0000000000000110
  
Logical CPU:     2
Error Code:      0x00000006
Trap Number:     14
[...]
       0x104212000 -        0x104217ff7 +_dotblas.so (???) <15CB5D81-FD91-3005-A21C-A7D1432020C2> /Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/numpy/core/_dotblas.so
[...]
    0x7fff96258000 -     0x7fff963e6fff  libBLAS.dylib (1128) <497912C1-A98E-3281-BED7-E9C751552F61> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
[...]

So the crash is occurring as a result of a call from NumPy's _dotblas extension module to OS X's libBLAS.  There's nothing obvious here that would indicate this is a problem in Python itself.  Suggest you pursue this in the NumPy community and, if necessary, open an issue there:

http://www.scipy.org/scipylib/mailing-lists.html