Created attachment 208314 [details] [review]
patch

I got a mysterious bug for my app using gdbus on OpenBSD 5.0.  After some debugging, it turned out a possible bug of gdbus.  Try compiling the following simple program on OpenBSD:

$ cat > test-gdbus.c
#include <gio/gio.h>

guint signals[2];

int main (void)
{
  signals[0] = 123;  
  signals[1] = 456;  

  g_debug ("signals[0] = %d, signals[1] = %d", signals[0], signals[1]);

  g_type_init ();
  g_type_class_ref (G_TYPE_DBUS_PROXY);

  g_debug ("signals[0] = %d, signals[1] = %d", signals[0], signals[1]);

  return 0;
}
^D
$ gcc -o test-gdbus test-gdbus.c `pkg-config gio-2.0 --cflags --libs` 
$ ./test-gdbus                                                        
** (process:5256): DEBUG: signals[0] = 123, signals[1] = 456
** (process:5256): DEBUG: signals[0] = 2, signals[1] = 3

Expected:

The two output lines should be identical.

Actual:

The contents of signals are overwritten.

Note:

Though this does not occur on GNU/Linux and perhaps an issue of the OpenBSD dynamic linker, I'm attaching a patch.