When the import of gi.repository.GLib failed, we would get a NULL
pointer that we passed along without any checking. In this situation,
the entire program would crash with a segmentation fault, and no
message to indicate the problem.
When the import fails, abort the SWIG init and print a message. The
Python interpreter then prints out a backtrace, which can be useful
in tracking down the problem.
%module(docstring=DOCSTRING) classes
%{
%module(docstring=DOCSTRING) classes
%{
#include <pygobject.h>
#include <numpy/arrayobject.h>
#include <pygobject.h>
#include <numpy/arrayobject.h>
+PyObject *PyGObject_lib;
PyObject *GLib;
PyTypeObject *IOChannel;
PyTypeObject *PollFD;
PyObject *GLib;
PyTypeObject *IOChannel;
PyTypeObject *PollFD;
- pygobject_init(-1, -1, -1);
+ PyGObject_lib = pygobject_init(-1, -1, -1);
+ if (!PyGObject_lib)
+ fprintf(stderr, "pygobject initialization failed.\n");
GLib = PyImport_ImportModule("gi.repository.GLib");
GLib = PyImport_ImportModule("gi.repository.GLib");
+ /*
+ * This check can't save us if the import fails, but at least it gives us
+ * a starting point to trace the issue versus straight out crashing.
+ */
+ if (!GLib) {
+ fprintf(stderr, "Import of gi.repository.GLib failed.\n");
+ return;
+ }
IOChannel = (PyTypeObject *) PyObject_GetAttrString(GLib, "IOChannel");
PollFD = (PyTypeObject *) PyObject_GetAttrString(GLib, "PollFD");
import_array();
IOChannel = (PyTypeObject *) PyObject_GetAttrString(GLib, "IOChannel");
PollFD = (PyTypeObject *) PyObject_GetAttrString(GLib, "PollFD");
import_array();