[Numpy-discussion] Seg. fault when running tests

Warren Weckesser warren.weckesser@gmail....
Sat Jun 15 10:50:43 CDT 2013


On Sat, Jun 15, 2013 at 11:43 AM, Warren Weckesser <
warren.weckesser@gmail.com> wrote:

> I'm getting a seg. fault in master when I run the tests.  I'm on Ubuntu
> 12.04 64 bit, with Python 3.3.2 (64 bits):
>
> $ python3 -c "import numpy as np; np.test('full')"
> Running unit tests for numpy
> NumPy version 1.8.0.dev-fa5bc1c
> NumPy is installed in
> /home/warren/local_py332/lib/python3.3/site-packages/numpy
> Python version 3.3.2 (default, Jun 14 2013, 12:12:22) [GCC 4.6.3]
> nose version 1.3.0
> .............................S.........................................................................................................................................................S.......................................................................................................................................................S..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................K............................................................................................................................................................................................SSS.................................................................................................K.....................................................................................................................................................................................Segmentation
> fault
>
> The seg. fault is occurring in ma/tests/test_mrecords.py:
>
> $ nosetests test_mrecords.py
> .Segmentation fault
>
> More info:
>
> $ python3
> Python 3.3.2 (default, Jun 14 2013, 12:12:22)
> [GCC 4.6.3] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import numpy as np
> >>> np.show_config()
> atlas_threads_info:
>     library_dirs = ['/usr/lib/atlas-base/atlas', '/usr/lib/atlas-base']
>     include_dirs = ['/usr/include/atlas']
>     language = f77
>     libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas']
>     define_macros = [('ATLAS_INFO', '"\\"3.8.4\\""')]
> atlas_blas_threads_info:
>     library_dirs = ['/usr/lib/atlas-base']
>     include_dirs = ['/usr/include/atlas']
>     language = c
>     libraries = ['ptf77blas', 'ptcblas', 'atlas']
>     define_macros = [('ATLAS_INFO', '"\\"3.8.4\\""')]
> mkl_info:
>   NOT AVAILABLE
> lapack_opt_info:
>     library_dirs = ['/usr/lib/atlas-base/atlas', '/usr/lib/atlas-base']
>     include_dirs = ['/usr/include/atlas']
>     language = f77
>     libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas']
>     define_macros = [('ATLAS_INFO', '"\\"3.8.4\\""')]
> blas_opt_info:
>     library_dirs = ['/usr/lib/atlas-base']
>     include_dirs = ['/usr/include/atlas']
>     language = c
>     libraries = ['ptf77blas', 'ptcblas', 'atlas']
>     define_macros = [('ATLAS_INFO', '"\\"3.8.4\\""')]
> lapack_mkl_info:
>   NOT AVAILABLE
> blas_mkl_info:
>   NOT AVAILABLE
> >>>
>
> gdb:
>
> $ gdb python3
> GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
> Copyright (C) 2012 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <
> http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> For bug reporting instructions, please see:
> <http://bugs.launchpad.net/gdb-linaro/>...
> Reading symbols from /home/warren/local_py332/bin/python3...done.
> (gdb) run test_mrecords.py
> Starting program: /home/warren/local_py332/bin/python3 test_mrecords.py
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> .
> Program received signal SIGSEGV, Segmentation fault.
> 0x00007ffff5f080a4 in _aligned_strided_to_contig_size8_srcstride0
> (dst=<optimized out>,
>     dst_stride=<optimized out>, src=<optimized out>,
> __NPY_UNUSED_TAGGEDsrc_stride=<optimized out>,
>     N=<optimized out>, __NPY_UNUSED_TAGGEDsrc_itemsize=<optimized out>,
> __NPY_UNUSED_TAGGEDdata=0x0)
>     at numpy/core/src/multiarray/lowlevel_strided_loops.c.src:190
> 190            *((@type@ *)dst) = temp;
> (gdb)
>
>

Log of the backtrace is attached.

Warren




>
> Warren
>
>
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#0  0x00007ffff5f080a4 in _aligned_strided_to_contig_size8_srcstride0 (dst=<optimized out>, 
    dst_stride=<optimized out>, src=<optimized out>, __NPY_UNUSED_TAGGEDsrc_stride=<optimized out>, 
    N=<optimized out>, __NPY_UNUSED_TAGGEDsrc_itemsize=<optimized out>, __NPY_UNUSED_TAGGEDdata=0x0)
    at numpy/core/src/multiarray/lowlevel_strided_loops.c.src:190
#1  0x00007ffff5eb328d in raw_array_assign_scalar (ndim=1, shape=0xe89580, dst_dtype=<optimized out>, 
    dst_data=0xcbdd94 "\377\177", dst_strides=<optimized out>, src_dtype=<optimized out>, src_data=0xe87e40 "")
    at numpy/core/src/multiarray/array_assign_scalar.c:80
#2  0x00007ffff5eb3aaf in PyArray_AssignRawScalar (dst=0xe84280, src_dtype=0x7ffff61a4fa0, src_data=0xe87e40 "", 
    wheremask=0x0, casting=<optimized out>) at numpy/core/src/multiarray/array_assign_scalar.c:252
#3  0x00007ffff5eb4a23 in PyArray_AssignArray (dst=0xe84280, src=0xa9e860, wheremask=0x0, 
    casting=NPY_UNSAFE_CASTING) at numpy/core/src/multiarray/array_assign_array.c:231
#4  0x00007ffff5e82ed4 in PyArray_CopyObject (dest=0xe84280, src_object=0x7fffefb200d8)
    at numpy/core/src/multiarray/arrayobject.c:322
#5  0x00007ffff5e9901c in VOID_setitem (op=0x7fffefb200d8, ip=0xcbdd94 "\377\177", ap=0xe84170)
    at numpy/core/src/multiarray/arraytypes.c.src:726
#6  0x00007ffff5e98ed9 in VOID_setitem (op=0x7fffef644550, ip=0xcbdd90 "", ap=0xe84170)
    at numpy/core/src/multiarray/arraytypes.c.src:692
#7  0x00007ffff5ec6040 in PyArray_FromAny (op=0x7fffef644550, newtype=0x7fffef650298, min_depth=<optimized out>, 
    max_depth=<optimized out>, flags=<optimized out>, context=<optimized out>)
    at numpy/core/src/multiarray/ctors.c:1679
#8  0x00007ffff5ec6126 in PyArray_CheckFromAny (op=0x7fffef644550, descr=0x7fffef650298, 
    min_depth=<optimized out>, max_depth=<optimized out>, requires=112, context=<optimized out>)
    at numpy/core/src/multiarray/ctors.c:1772
#9  0x00007ffff5f28a91 in _array_fromobject (__NPY_UNUSED_TAGGEDignored=<optimized out>, args=<optimized out>, 
    kws=<optimized out>) at numpy/core/src/multiarray/multiarraymodule.c:1663
#10 0x000000000048159d in do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fffffffa4d0, 
    func=0x7ffff669fdd0) at Python/ceval.c:4280
#11 call_function (oparg=<optimized out>, pp_stack=0x7fffffffa4d0) at Python/ceval.c:4086
#12 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#13 0x0000000000481773 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0x7fffffffa640, 
    func=0x7ffff2086a70) at Python/ceval.c:4151
#14 call_function (oparg=<optimized out>, pp_stack=0x7fffffffa640) at Python/ceval.c:4084
#15 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#16 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x7fffef640bd0, kwcount=0, defs=0x7ffff20897e8, 
    defcount=1, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#17 0x0000000000481636 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0x7fffffffa860, 
    func=0x7ffff2096200) at Python/ceval.c:4161
#18 call_function (oparg=<optimized out>, pp_stack=0x7fffffffa860) at Python/ceval.c:4084
#19 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#20 0x0000000000481773 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fffffffa9d0, 
    func=0x7fffefb22560) at Python/ceval.c:4151
#21 call_function (oparg=<optimized out>, pp_stack=0x7fffffffa9d0) at Python/ceval.c:4084
#22 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#23 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=3, kws=0xe892f8, kwcount=1, defs=0x7ffff4a39d68, 
    defcount=1, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#24 0x0000000000481636 in fast_function (nk=<optimized out>, na=3, n=<optimized out>, pp_stack=0x7fffffffabf0, 
    func=0x7ffff4a46050) at Python/ceval.c:4161
#25 call_function (oparg=<optimized out>, pp_stack=0x7fffffffabf0) at Python/ceval.c:4084
#26 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#27 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x7ffff7f92068, kwcount=0, defs=0x7ffff4a3c6a8, 
    defcount=1, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#28 0x000000000053567c in function_call (func=0x7ffff4a460e0, arg=0x7fffefb06290, kw=0x7fffef647a70)
    at Objects/funcobject.c:633
#29 0x000000000050ac9a in PyObject_Call (func=0x7ffff4a460e0, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#30 0x000000000047dab5 in ext_do_call (nk=-273653104, na=1, flags=<optimized out>, pp_stack=0x7fffffffaee0, 
    func=0x7ffff4a460e0) at Python/ceval.c:4378
#31 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2720
#32 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x0, kwcount=0, defs=0x0, defcount=0, 
    kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#33 0x0000000000535575 in function_call (func=0x7ffff4a46200, arg=0x7fffefb053b0, kw=0x0)
    at Objects/funcobject.c:633
#34 0x000000000050ac9a in PyObject_Call (func=0x7ffff4a46200, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#35 0x00000000005213d4 in method_call (func=0x7ffff4a46200, arg=0x7fffefb053b0, kw=0x0)
    at Objects/classobject.c:323
#36 0x000000000050ac9a in PyObject_Call (func=0x7fffefb0fcb0, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#37 0x0000000000431481 in slot_tp_call (self=0x7fffefb109d0, args=0x7fffefb1de10, kwds=0x0)
    at Objects/typeobject.c:5365
#38 0x000000000050ac9a in PyObject_Call (func=0x7fffefb109d0, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#39 0x000000000047fae0 in do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fffffffb2c0, 
    func=0x7fffefb109d0) at Python/ceval.c:4283
#40 call_function (oparg=<optimized out>, pp_stack=0x7fffffffb2c0) at Python/ceval.c:4086
#41 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#42 0x0000000000481773 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0x7fffffffb430, 
    func=0x7ffff179ab00) at Python/ceval.c:4151
#43 call_function (oparg=<optimized out>, pp_stack=0x7fffffffb430) at Python/ceval.c:4084
#44 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#45 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x7ffff7f92068, kwcount=0, defs=0x0, 
    defcount=0, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#46 0x000000000053567c in function_call (func=0x7ffff179aa70, arg=0x7fffef645d88, kw=0x7fffef6479e0)
    at Objects/funcobject.c:633
#47 0x000000000050ac9a in PyObject_Call (func=0x7ffff179aa70, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#48 0x000000000047dab5 in ext_do_call (nk=-278635128, na=1, flags=<optimized out>, pp_stack=0x7fffffffb720, 
    func=0x7ffff179aa70) at Python/ceval.c:4378
#49 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2720
#50 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x0, kwcount=0, defs=0x0, defcount=0, 
    kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#51 0x0000000000535575 in function_call (func=0x7ffff179a560, arg=0x7fffef645d40, kw=0x0)
    at Objects/funcobject.c:633
#52 0x000000000050ac9a in PyObject_Call (func=0x7ffff179a560, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#53 0x00000000005213d4 in method_call (func=0x7ffff179a560, arg=0x7fffef645d40, kw=0x0)
    at Objects/classobject.c:323
#54 0x000000000050ac9a in PyObject_Call (func=0x7fffefb0fc68, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#55 0x0000000000431481 in slot_tp_call (self=0x7fffefb10990, args=0x7fffef6460d0, kwds=0x0)
    at Objects/typeobject.c:5365
#56 0x000000000050ac9a in PyObject_Call (func=0x7fffefb10990, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#57 0x000000000047fae0 in do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fffffffbb00, 
    func=0x7fffefb10990) at Python/ceval.c:4283
#58 call_function (oparg=<optimized out>, pp_stack=0x7fffffffbb00) at Python/ceval.c:4086
#59 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#60 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x7ffff7f92068, kwcount=0, defs=0x0, 
    defcount=0, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#61 0x000000000053567c in function_call (func=0x7ffff112b830, arg=0x7ffff67b2128, kw=0x7fffef647908)
    at Objects/funcobject.c:633
#62 0x000000000050ac9a in PyObject_Call (func=0x7ffff112b830, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#63 0x000000000047dab5 in ext_do_call (nk=-159702744, na=1, flags=<optimized out>, pp_stack=0x7fffffffbdf0, 
    func=0x7ffff112b830) at Python/ceval.c:4378
#64 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2720
#65 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x0, kwcount=0, defs=0x0, defcount=0, 
    kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#66 0x0000000000535575 in function_call (func=0x7ffff112b680, arg=0x7fffef645dd0, kw=0x0)
    at Objects/funcobject.c:633
#67 0x000000000050ac9a in PyObject_Call (func=0x7ffff112b680, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#68 0x00000000005213d4 in method_call (func=0x7ffff112b680, arg=0x7fffef645dd0, kw=0x0)
    at Objects/classobject.c:323
#69 0x000000000050ac9a in PyObject_Call (func=0x7fffefb06cf8, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#70 0x0000000000431481 in slot_tp_call (self=0x7fffefb1da90, args=0x7fffef646110, kwds=0x0)
    at Objects/typeobject.c:5365
#71 0x000000000050ac9a in PyObject_Call (func=0x7fffefb1da90, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#72 0x000000000047fae0 in do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fffffffc1d0, 
    func=0x7fffefb1da90) at Python/ceval.c:4283
#73 call_function (oparg=<optimized out>, pp_stack=0x7fffffffc1d0) at Python/ceval.c:4086
#74 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#75 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x7ffff7f92068, kwcount=0, defs=0x0, 
    defcount=0, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#76 0x000000000053567c in function_call (func=0x7ffff112b830, arg=0x7fffefb05128, kw=0x7fffef6478c0)
    at Objects/funcobject.c:633
#77 0x000000000050ac9a in PyObject_Call (func=0x7ffff112b830, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#78 0x000000000047dab5 in ext_do_call (nk=-273657560, na=1, flags=<optimized out>, pp_stack=0x7fffffffc4c0, 
    func=0x7ffff112b830) at Python/ceval.c:4378
#79 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2720
#80 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x0, kwcount=0, defs=0x0, defcount=0, 
    kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#81 0x0000000000535575 in function_call (func=0x7ffff112b680, arg=0x7fffefb055a8, kw=0x0)
    at Objects/funcobject.c:633
#82 0x000000000050ac9a in PyObject_Call (func=0x7ffff112b680, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#83 0x00000000005213d4 in method_call (func=0x7ffff112b680, arg=0x7fffefb055a8, kw=0x0)
    at Objects/classobject.c:323
#84 0x000000000050ac9a in PyObject_Call (func=0x7ffff11412d8, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#85 0x0000000000431481 in slot_tp_call (self=0x7fffef6464d0, args=0x7fffef646250, kwds=0x0)
    at Objects/typeobject.c:5365
#86 0x000000000050ac9a in PyObject_Call (func=0x7fffef6464d0, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#87 0x000000000047fae0 in do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fffffffc8a0, 
    func=0x7fffef6464d0) at Python/ceval.c:4283
#88 call_function (oparg=<optimized out>, pp_stack=0x7fffffffc8a0) at Python/ceval.c:4086
#89 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#90 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x7ffff7f92068, kwcount=0, defs=0x0, 
    defcount=0, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#91 0x000000000053567c in function_call (func=0x7ffff112b830, arg=0x7ffff20b0ef0, kw=0x7fffef6477a0)
    at Objects/funcobject.c:633
#92 0x000000000050ac9a in PyObject_Call (func=0x7ffff112b830, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#93 0x000000000047dab5 in ext_do_call (nk=-234156304, na=1, flags=<optimized out>, pp_stack=0x7fffffffcb90, 
    func=0x7ffff112b830) at Python/ceval.c:4378
#94 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2720
#95 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x0, kwcount=0, defs=0x0, defcount=0, 
    kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#96 0x0000000000535575 in function_call (func=0x7ffff112b680, arg=0x7fffefb053f8, kw=0x0)
    at Objects/funcobject.c:633
#97 0x000000000050ac9a in PyObject_Call (func=0x7ffff112b680, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#98 0x00000000005213d4 in method_call (func=0x7ffff112b680, arg=0x7fffefb053f8, kw=0x0)
    at Objects/classobject.c:323
#99 0x000000000050ac9a in PyObject_Call (func=0x7fffefd46440, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#100 0x0000000000431481 in slot_tp_call (self=0x7fffefb104d0, args=0x7fffefb1dc90, kwds=0x0)
    at Objects/typeobject.c:5365
#101 0x000000000050ac9a in PyObject_Call (func=0x7fffefb104d0, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#102 0x000000000047fae0 in do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fffffffcf70, 
    func=0x7fffefb104d0) at Python/ceval.c:4283
#103 call_function (oparg=<optimized out>, pp_stack=0x7fffffffcf70) at Python/ceval.c:4086
#104 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#105 0x0000000000481773 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0x7fffffffd0e0, 
    func=0x7ffff112d950) at Python/ceval.c:4151
#106 call_function (oparg=<optimized out>, pp_stack=0x7fffffffd0e0) at Python/ceval.c:4084
#107 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#108 0x0000000000481773 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fffffffd250, 
    func=0x7ffff112dcb0) at Python/ceval.c:4151
#109 call_function (oparg=<optimized out>, pp_stack=0x7fffffffd250) at Python/ceval.c:4084
#110 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#111 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=1, kws=0x7ffff112f3f8, kwcount=6, defs=0x7ffff4a17218, 
    defcount=11, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#112 0x000000000053567c in function_call (func=0x7ffff4a17290, arg=0x7ffff677ad50, kw=0x7ffff1137368)
    at Objects/funcobject.c:633
#113 0x000000000050ac9a in PyObject_Call (func=0x7ffff4a17290, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#114 0x000000000047dab5 in ext_do_call (nk=-159929008, na=1, flags=<optimized out>, pp_stack=0x7fffffffd540, 
    func=0x7ffff4a17290) at Python/ceval.c:4378
#115 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2720
#116 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=1, kws=0x7ffff1135170, kwcount=2, defs=0x7ffff112da88, 
    defcount=11, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#117 0x000000000053567c in function_call (func=0x7ffff112d9e0, arg=0x7ffff660fad0, kw=0x7ffff7ee9758)
    at Objects/funcobject.c:633
#118 0x000000000050ac9a in PyObject_Call (func=0x7ffff112d9e0, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#119 0x00000000005213d4 in method_call (func=0x7ffff112d9e0, arg=0x7ffff660fad0, kw=0x7ffff7ee9758)
    at Objects/classobject.c:323
#120 0x000000000050ac9a in PyObject_Call (func=0x7ffff11374d0, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#121 0x0000000000431189 in slot_tp_init (self=0x7ffff678a8d0, args=0x7ffff7f92050, kwds=0x7ffff7ee9758)
    at Objects/typeobject.c:5580
#122 0x000000000042cd87 in type_call (type=<optimized out>, args=0x7ffff7f92050, kwds=0x7ffff7ee9758)
    at Objects/typeobject.c:754
#123 0x000000000050ac9a in PyObject_Call (func=0xd55190, arg=<optimized out>, kw=<optimized out>)
    at Objects/abstract.c:2084
#124 0x000000000047dab5 in ext_do_call (nk=-134668208, na=0, flags=<optimized out>, pp_stack=0x7fffffffd940, 
    func=0xd55190) at Python/ceval.c:4378
#125 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2720
#126 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=0, kws=0x8b1030, kwcount=1, defs=0x0, defcount=0, 
    kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#127 0x0000000000481636 in fast_function (nk=<optimized out>, na=0, n=<optimized out>, pp_stack=0x7fffffffdb60, 
    func=0x7ffff20bf8c0) at Python/ceval.c:4161
#128 call_function (oparg=<optimized out>, pp_stack=0x7fffffffdb60) at Python/ceval.c:4084
#129 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#130 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=0, kws=0x8cca50, kwcount=0, defs=0x7ffff4a1e528, 
    defcount=1, kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#131 0x0000000000481636 in fast_function (nk=<optimized out>, na=0, n=<optimized out>, pp_stack=0x7fffffffdd80, 
    func=0x7ffff49b4290) at Python/ceval.c:4161
#132 call_function (oparg=<optimized out>, pp_stack=0x7fffffffdd80) at Python/ceval.c:4084
#133 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:2679
#134 0x0000000000479d54 in PyEval_EvalCodeEx (_co=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, 
    kwdefs=0x0, closure=0x0) at Python/ceval.c:3433
#135 0x0000000000479e1b in PyEval_EvalCode (co=<optimized out>, globals=<optimized out>, locals=<optimized out>)
    at Python/ceval.c:771
#136 0x00000000004a573d in run_mod (arena=0x91e990, flags=0x7fffffffe0b0, locals=0x7ffff7f136c8, 
    globals=0x7ffff7f136c8, filename=<optimized out>, mod=0x98fab0) at Python/pythonrun.c:1981
#137 PyRun_FileExFlags (fp=0x908dc0, filename=<optimized out>, start=<optimized out>, globals=0x7ffff7f136c8, 
    locals=0x7ffff7f136c8, closeit=1, flags=0x7fffffffe0b0) at Python/pythonrun.c:1937
#138 0x00000000004a67ad in PyRun_SimpleFileExFlags (fp=0x908dc0, filename=<optimized out>, closeit=1, 
    flags=0x7fffffffe0b0) at Python/pythonrun.c:1447
#139 0x00000000004bd332 in run_file (p_cf=0x7fffffffe0b0, filename=0x85b2d0 L"test_mrecords.py", fp=0x908dc0)
    at Modules/main.c:306
#140 Py_Main (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:743
#141 0x00000000004195ee in main (argc=2, argv=0x7fffffffe228) at ./Modules/python.c:58


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