Closed
Description
I'm getting Segmentation fault when running numpy.random.permutation on list of long strings. With small strings works well.
import numpy as np
a = ['a', 'a' * 100]
z = np.random.permutation(np.array(a))
NumPy version: 1.11.0
Python 2.7
OS: Ubuntu 14.04.4 LTS
GDB trace:
(gdb) run
Starting program: /usr/bin/python test.pyProgram received signal SIGSEGV, Segmentation fault.
visit_decref.48915 (op=<unknown at remote 0x6161616161616161>, data=0x0) at ../Modules/gcmodule.c:360
360 ../Modules/gcmodule.c: No such file or directory.
(gdb) bt0 visit_decref.48915 (op=<unknown at remote 0x6161616161616161>, data=0x0) at ../Modules/gcmodule.c:360
1 0x000000000057392b in dict_traverse.18526 (
op={<unknown at remote 0x6161616161616161>: <unknown at remote 0x6161616161616161>, <unknown at remote 0x6161616161616161>: <unknown at remote 0x6161616161616161>, <unknown at remote 0x6161616161616161>: <unknown at remote 0x61616161>, '__builtins__': {'bytearray': <type at remote 0x910680>, 'IndexError': <type at remote 0x913740>, 'all': <built-in function all>, 'help': <_Helper at remote 0x7ffff7e86210>, 'vars': <built-in function vars>, 'SyntaxError': <type at remote 0x915820>, 'unicode': <type at remote 0x9199c0>, 'UnicodeDecodeError': <type at remote 0x914760>, 'memoryview': <type at remote 0x907e00>, 'isinstance': <built-in function isinstance>, 'copyright': <_Printer(_Printer__data='Copyright (c) 2001-2014 Python Software Foundation.\nAll Rights Reserved.\n\nCopyright (c) 2000 BeOpen.com.\nAll Rights Reserved.\n\nCopyright (c) 1995-2001 Corporation for National Research Initiatives.\nAll Rights Reserved.\n\nCopyright (c) 1991-1995 Stichting Mathematisch Centrum, Amsterdam.\nAll Rights Reserved.', _Printer...(truncated), visit=0x54eee0 <visit_decref.48915>, arg=0x0) at ../Objects/dictobject.c:21132 0x0000000000536476 in subtract_refs (containers=0x9186e0 <generations+96>) at ../Modules/gcmodule.c:385
3 collect.49008 (generation=) at ../Modules/gcmodule.c:925
4 0x000000000042749e in PyGC_Collect () at ../Modules/gcmodule.c:1440
5 0x0000000000437d47 in Py_Finalize () at ../Python/pythonrun.c:449
6 0x000000000044f993 in Py_Main (argc=, argv=0x7fffffffdc18) at ../Modules/main.c:665
7 0x00007ffff7818f45 in __libc_start_main (main=0x44f9c2 , argc=2, argv=0x7fffffffdc18, init=,
fini=<optimised out>, rtld_fini=<optimised out>, stack_end=0x7fffffffdc08) at libc-start.c:2878 0x0000000000578c4e in _start ()
Reproducibility: ~ 50%