Bug#480657: python-opengl: Using glutDisplayFunc and glutKeyboardFunc causes Segmentation Fault in glutMainLoop
Hi Brendon, can you still reproduce the crash? With python2.5 2.5.2-11.1, the program doesn't crash any more for me (tested on both x86 and x86_64). best, Torsten -- .: Torsten Marek .: http://shlomme.diotavelli.net .: [EMAIL PROTECTED] -- GnuPG: 1024D/A244C858 signature.asc Description: Dies ist ein digital signierter Nachrichtenteil
Bug#480657: python-opengl: Using glutDisplayFunc and glutKeyboardFunc causes Segmentation Fault in glutMainLoop
Hi!; I'm having the same problem reported by this bug but in python-opengl 3.0.0~b3-1 version. I'm reproducing the SIGSEGV with Brendon's smallest code either on Python 2.5 and Python 2.4; and having no problem compiling the equivalent C code attached by Brenton. On other machines, testing with Debian 32bits and Ubuntu 64bits the bug isn't manifesting. My video card is a Intel 82945G/GZ and the driver is i810. Regards; Sebastián Santisi -- System Information: Debian Release: lenny/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 2.6.25-2-amd64 (SMP w/2 CPU cores) Locale: LANG=es_AR.UTF-8, LC_CTYPE=es_AR.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages python-opengl depends on: ii freeglut3 2.4.0-6.1 OpenGL Utility Toolkit ii libgl1-mesa-glx [libgl1] 7.0.3-5A free implementation of the OpenG ii libglu1-mesa [libglu1]7.0.3-5The OpenGL utility library (GLU) ii python2.5.2-2An interactive high-level object-o ii python-central0.6.8 register and build utility for Pyt ii python-ctypes 1.0.2-5Python package to create and manip ii python-pkg-resources 0.6c8-4Package Discovery and Resource Acc python-opengl recommends no packages. Versions of packages python-opengl suggests: pn libgle3 none (no description available) pn python-numpy none (no description available) pn python-tk none (no description available) -- no debconf information -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#480657: python-opengl: Using glutDisplayFunc and glutKeyboardFunc causes Segmentation Fault in glutMainLoop
Good news. After updating the python2.5 package to 2.5.2-6 I can no longer reproduce this problem. It seems something between 2.5.2-1 and 2.5.2-6 fixed whatever was causing this. Peace, Brendon signature.asc Description: This is a digitally signed message part.
Bug#480657: python-opengl: Using glutDisplayFunc and glutKeyboardFunc causes Segmentation Fault in glutMainLoop
Hi,
Some more information I've discovered about this bug:
1) A test on a friend's 32-bit PowerPC machine didn't reproduce it. (Maybe a
64-bit issue?)
2) The following equivalent C code does not reproduce it:
#include GL/glut.h
#include stdio.h
void disFunc() {
printf(disFunc\n);
fflush(stdout);
}
void keyFunc(unsigned char c, int a, int b) {
printf(keyFunc\n);
fflush(stdout);
}
int main(int argc, char** args) {
glutInit(argc, args);
glutInitDisplayMode(GLUT_RGB);
glutInitWindowSize(640, 480);
glutCreateWindow(appname);
glutDisplayFunc(disFunc);
glutKeyboardFunc(keyFunc);
glutMainLoop();
return 0;
}
That suggests that it's something about the OpenGL wrapper itself.
Peace,
Brendon
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Bug#480657: python-opengl: Using glutDisplayFunc and glutKeyboardFunc causes Segmentation Fault in glutMainLoop
Package: python-opengl Version: 3.0.0~b1-2 Severity: normal When the default python version in testing changed to 2.5 I found a program I had written failed with segmentation faults. I've narrowed down the bug. The following is the smallest reasonable piece of code which will cause the segfault: from OpenGL.GLUT import * glutInit([appname]) glutInitDisplayMode(GLUT_RGB) glutInitWindowSize(640, 480); glutCreateWindow(appname) def disFunc(): print disFunc def keyFunc(*args): print keyFunc glutDisplayFunc(disFunc) glutKeyboardFunc(keyFunc) glutMainLoop() Pasting the code into python interactive mode demonstrates the problem as well as using a .py file. Python will segfault as soon as it enters the glutMainLoop function. If either glutDisplayFunc(disFunc) or glutKeyboardFunc(keyFunc) is commented out, there is no problem, and things behave as you would expect them to. Also if I use python2.4, there is no problem. But if I use both keyFunc and disFunc in python2.5: SIGSEGV, every time. I'm not sure if a gdb backtrace is useful, but here it is, anyway: #0 0x2bac5fcc in ?? () #1 0x2b314e83 in ?? () from /usr/lib/libglut.so.3 #2 0x2b318059 in fgEnumWindows () from /usr/lib/libglut.so.3 #3 0x2b31570e in glutMainLoopEvent () from /usr/lib/libglut.so.3 #4 0x2b315b38 in glutMainLoop () from /usr/lib/libglut.so.3 #5 0x2b3dceb76e74 in ffi_call_unix64 () from /usr/lib/python2.5/lib-dynload/_ctypes.so #6 0x2b3dceb768bd in ffi_call () from /usr/lib/python2.5/lib-dynload/_ctypes.so #7 0x2b3dceb7179a in _CallProc () from /usr/lib/python2.5/lib-dynload/_ctypes.so #8 0x2b3dceb6b4ff in ?? () from /usr/lib/python2.5/lib-dynload/_ctypes.so #9 0x00417c73 in PyObject_Call () #10 0x004854ca in PyEval_EvalFrameEx () #11 0x00489756 in PyEval_EvalCodeEx () #12 0x00489872 in PyEval_EvalCode () #13 0x004ab339 in PyRun_InteractiveOneFlags () #14 0x004ab544 in PyRun_InteractiveLoopFlags () #15 0x004ab64a in PyRun_AnyFileExFlags () #16 0x0041442d in Py_Main () #17 0x2b3dcdf091c4 in __libc_start_main () from /lib/libc.so.6 #18 0x004139a9 in _start () Peace, Brendon -- System Information: Debian Release: lenny/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.24-1-amd64 (SMP w/2 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages python-opengl depends on: ii freeglut3 2.4.0-6OpenGL Utility Toolkit ii libgl1-mesa-glx [libgl1] 7.0.3-1A free implementation of the OpenG ii libglu1-mesa [libglu1]7.0.3-1The OpenGL utility library (GLU) ii python2.5.2-1An interactive high-level object-o ii python-central0.6.6 register and build utility for Pyt ii python-ctypes 1.0.2-4Python package to create and manip ii python-pkg-resources 0.6c8-3Package Discovery and Resource Acc python-opengl recommends no packages. -- no debconf information -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
