Created on 2009-09-09 08:31 by warlock, last changed 2010-09-12 16:20 by ocean-city. This issue is now closed.
| Files | ||||
|---|---|---|---|---|
| File name | Uploaded | Description | Edit | |
| fix_ctypes_crash.patch | ocean-city, 2009-09-20 02:19 | |||
| Messages (7) | |||
|---|---|---|---|
| msg92444 - (view) | Author: Ilya (warlock) | Date: 2009-09-09 08:31 | |
When embedding python from C, and importing "ctypes" module in embedded
script, it always crashes on Py_Finalize() on 4th cycle.
Tested with both PyRun_SimpleString(...) and PyRun_String(...).
Platform: Windows XP
IDE's: LabWindows/CVI 8.5 and Code::Blocks/gcc
Code:
--------------------------
#include <stdio.h>
#include <python.h>
int main()
{
int i;
for (i=0; i<10; i++)
{
printf("--- %d ---\n", i);
Py_Initialize();
PyRun_SimpleString("import ctypes");
Py_Finalize();
}
return 0;
}
--------------------------------
Output:
--------------------------------
--- 0 ---
--- 1 ---
--- 2 ---
--- 3 ---
Process returned -1073741819 (0xC0000005) execution time : 3.109 s
Press any key to continue.
--------------------------------
|
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| msg92449 - (view) | Author: Ilya (warlock) | Date: 2009-09-09 12:49 | |
Tested
obj=PyImport_ImportModule("ctypes");
Py_DECREF(obj);
instead of PyRun_SimpleString(...) - same result
|
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| msg92555 - (view) | Author: (mkp) | Date: 2009-09-12 22:12 | |
on python2.5 / mac os x 10.5.7:
$ cat main.c
#include <stdio.h>
#include <python.h>
int main()
{
int i;
for (i=0; i<10; i++)
{
printf("--- %d ---\n", i);
Py_Initialize();
PyRun_SimpleString("import ctypes");
Py_Finalize();
}
return 0;
}
$ gcc -I/usr/include/python2.5/ -L/usr/lib/python2.5/ -lpython main.c
$ ./a.out
--- 0 ---
--- 1 ---
--- 2 ---
--- 3 ---
Assertion failed: (type->tp_flags & Py_TPFLAGS_HEAPTYPE), function
type_dealloc, file Objects/typeobject.c, line 2148.
Abort trap
$ uname -mprsv
Darwin 9.7.0 Darwin Kernel Version 9.7.0: Tue Mar 31 22:52:17 PDT 2009;
root:xnu-1228.12.14~1/RELEASE_I386 i386 i386
|
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| msg92880 - (view) | Author: Hirokazu Yamamoto (ocean-city) *  |
Date: 2009-09-20 02:19 | |
I hope attached patch will fix this issue. |
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| msg102369 - (view) | Author: nik (nik.lutz@gmail.com) | Date: 2010-04-05 11:44 | |
I can confirm that the patch fix this issue. I adapted the patch (variable names changed): 5523a5524 > Py_INCREF(&Struct_Type); 5529a5531 > Py_INCREF(&Union_Type); 5535a5538 > Py_INCREF(&Pointer_Type); 5541a5545 > Py_INCREF(&Array_Type); 5547a5552 > Py_INCREF(&Simple_Type); 5553a5559 > Py_INCREF(&CFuncPtr_Type); Platform: Linux (kubuntu 9.10 x64) Python: 2.6.4-0ubuntu3 |
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| msg113297 - (view) | Author: Thomas Heller (theller) * |
Date: 2010-08-08 18:29 | |
Fixed in rev 83841 (py3k), rev 83842 (release31-maint), and rev 83843 (release27-maint). Thanks for the patch. |
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| msg116211 - (view) | Author: Hirokazu Yamamoto (ocean-city) * |
Date: 2010-09-12 16:20 | |
I found another refcount bug in Python3.x. Fixed in r84741(py3k), r84742(release31-maint). |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2010-09-12 16:20:38 | ocean-city | set | messages: + msg116211 |
| 2010-08-08 18:29:31 | theller | set | status: open -> closed resolution: fixed messages: + msg113297 |
| 2010-08-04 22:22:38 | terry.reedy | set | stage: patch review versions: + Python 3.1, Python 2.7, Python 3.2, - Python 2.6, Python 2.5 |
| 2010-07-19 10:42:11 | ocean-city | set | nosy:
+ tanaga |
| 2010-04-05 11:44:33 | nik.lutz@gmail.com | set | nosy:
+ nik.lutz@gmail.com messages: + msg102369 |
| 2009-11-13 14:24:19 | robince | set | nosy:
+ robince |
| 2009-09-20 02:19:51 | ocean-city | set | files:
+ fix_ctypes_crash.patch nosy: + ocean-city messages: + msg92880 keywords: + patch |
| 2009-09-12 22:12:00 | mkp | set | nosy:
+ mkp messages: + msg92555 |
| 2009-09-09 12:49:57 | warlock | set | messages: + msg92449 |
| 2009-09-09 08:31:14 | warlock | create | |