Found the problem: I just have to add libgio.g_object_unref.argtypes = [ctypes.c_void_p] It now works flawlessly! Sorry for the noise.
2015-03-27 13:03 GMT+01:00 Bruno Cauet <brunoca...@gmail.com>: > Hi, > I have a segfault problem with ctypes. Script attached. > I simply need to call `libgio.g_file_new_for_path` and then > `libgio.g_file_get_uri` with its result. That result is a GFile*. Since I > don't manipulate that GFile* I don't think I have to mess with argtypes & > restype of the functions. I still tried ctypes.c_uint and ctypes.c_void_p. > In all cases after a few iterations g_file_get_uri will segfault. This does > not happen in the native version. > You will find python & c script attached. > > Here is the result of a typical run: > > $ LANG=C python2 ctypes_gio.py > Step 0 > getting g_file_ptr for /foo/bar > getting uri_ptr with 8093280 > free g_file_ptr > getting uri > free uri_ptr > Step 1 > getting g_file_ptr for /foo/bar > getting uri_ptr with 8093344 > free g_file_ptr > getting uri > free uri_ptr > Step 2 > getting g_file_ptr for /foo/bar > getting uri_ptr with 8093824 > free g_file_ptr > getting uri > free uri_ptr > Step 3 > getting g_file_ptr for /foo/bar > getting uri_ptr with 8093440 > free g_file_ptr > getting uri > free uri_ptr > Step 4 > getting g_file_ptr for /foo/bar > getting uri_ptr with 8093472 > free g_file_ptr > getting uri > free uri_ptr > Step 5 > getting g_file_ptr for /foo/bar > getting uri_ptr with 8093856 > free g_file_ptr > getting uri > free uri_ptr > Step 6 > getting g_file_ptr for /foo/bar > getting uri_ptr with 140176928020160 > free g_file_ptr > Erreur de segmentation (core dumped) > > > As you can see segfault happens as soon as the pointer position is outside > [0, 2^31[. > This is why I tried messing with argument/response types. > What am I doing wrong? Any pointer (ahah) on how to solve my problem? > > The c code can be compiled that way: > $ gcc $(pkg-config --cflags gio-2.0) segfault.c -o segfault $(pkg-config > --libs gio-2.0) > > Thanks > Bruno >
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