New submission from Matthias Klose:
the following example started to segfault with the 2.7 branch 20161103, last
working one 20160901, on 3.5 branch 20161103, last working one 20160922.
from __future__ import print_function
import ctypes
import ctypes.util
lib_location = ctypes.util.find_library('gettextpo')
gpo = ctypes.cdll.LoadLibrary(lib_location)
gpo_message = gpo.po_message_create()
source = "foo"
print("calling po_message_set_msgid")
gpo.po_message_set_msgid(gpo_message, source.encode('utf-8'))
print("success")
#0 0x00007ffff5e74906 in po_message_set_msgid ()
from /usr/lib/x86_64-linux-gnu/libgettextpo.so.0
#1 0x00007ffff6a4b038 in ffi_call_unix64 ()
from /usr/lib/x86_64-linux-gnu/libffi.so.6
#2 0x00007ffff6a4aa9a in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#3 0x00007ffff6c662ec in _call_function_pointer (flags=4353,
pProc=0x7ffff5e74900 <po_message_set_msgid>, avalues=0x7fffffffd9c0,
atypes=0x7fffffffd9a0, restype=0x7ffff6e9c530, resmem=0x7fffffffd9e0,
argcount=2)
at ./Modules/_ctypes/callproc.c:841
#4 0x00007ffff6c66f61 in _ctypes_callproc (
pProc=0x7ffff5e74900 <po_message_set_msgid>, argtuple=(1439158016, 'foo'),
flags=4353, argtypes=0x0,
restype=<_ctypes.PyCSimpleType at remote 0x555555c43d70>, checker=0x0)
at ./Modules/_ctypes/callproc.c:1184
#5 0x00007ffff6c5f7e2 in PyCFuncPtr_call (self=0x7ffff6ea6a60,
inargs=(1439158016, 'foo'), kwds=0x0) at ./Modules/_ctypes/_ctypes.c:3973
#6 0x00005555555b3151 in PyObject_Call (
func=<_FuncPtr(__name__='po_message_set_msgid') at remote 0x7ffff6ea6a60>,
arg=(1439158016, 'foo'), kw=0x0) at ../Objects/abstract.c:2547
#7 0x00005555556c5cef in do_call (
func=<_FuncPtr(__name__='po_message_set_msgid') at remote 0x7ffff6ea6a60>,
pp_stack=0x7fffffffde70, na=2, nk=0) at ../Python/ceval.c:4569
#8 0x00005555556c5082 in call_function (pp_stack=0x7fffffffde70, oparg=2)
at ../Python/ceval.c:4374
#9 0x00005555556bf492 in PyEval_EvalFrameEx (
f=Frame 0x7ffff7e3bc00, for file foo.py, line 12, in <module> (),
throwflag=0)
at ../Python/ceval.c:2989
----------
components: Extension Modules
keywords: 3.5regression
messages: 280202
nosy: doko
priority: high
severity: normal
status: open
title: [2.7/3.5/3.6 Regression] crash using ctypes
type: crash
versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue28631>
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