[pygobject] Limit foreign struct checks to GI_INFO_TYPE_STRUCT

[Simon Feltman <sfeltman src gnome org>]

commit 09161ff690ad37c94668d5d65191f4d84829d41f
Author: Simon Feltman <sfeltman src gnome org>
Date:   Sun Sep 7 15:53:35 2014 -0700

    Limit foreign struct checks to GI_INFO_TYPE_STRUCT
    
    Add struct type check before calling g_struct_info_is_foreign().
    
    https://bugzilla.gnome.org/show_bug.cgi?id=736175

 gi/pygi-argument.c       |   11 ++++++++---
 gi/pygi-struct-marshal.c |    7 +++++--
 2 files changed, 13 insertions(+), 5 deletions(-)
---
diff --git a/gi/pygi-argument.c b/gi/pygi-argument.c
index 3d643fe..d63520d 100644
--- a/gi/pygi-argument.c
+++ b/gi/pygi-argument.c
@@ -1036,6 +1036,8 @@ array_success:
                 {
                     GType g_type;
                     PyObject *py_type;
+                    gboolean is_foreign = (info_type == GI_INFO_TYPE_STRUCT) &&
+                                          (g_struct_info_is_foreign ((GIStructInfo *) info));
 
                     g_type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info);
                     py_type = _pygi_type_import_by_gi_info ( (GIBaseInfo *) info);
@@ -1055,7 +1057,7 @@ array_success:
                                                      py_type,
                                                      transfer,
                                                      FALSE, /*copy_reference*/
-                                                     g_struct_info_is_foreign (info),
+                                                     is_foreign,
                                                      g_type_info_is_pointer (type_info));
 
                     Py_DECREF (py_type);
@@ -1382,6 +1384,8 @@ _pygi_argument_to_object (GIArgument  *arg,
                 {
                     PyObject *py_type;
                     GType g_type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info);
+                    gboolean is_foreign = (info_type == GI_INFO_TYPE_STRUCT) &&
+                                          (g_struct_info_is_foreign ((GIStructInfo *) info));
 
                     /* Special case variant and none to force loading from py module. */
                     if (g_type == G_TYPE_VARIANT || g_type == G_TYPE_NONE) {
@@ -1396,7 +1400,7 @@ _pygi_argument_to_object (GIArgument  *arg,
                                                             py_type,
                                                             transfer,
                                                             FALSE, /*is_allocated*/
-                                                            g_struct_info_is_foreign (info));
+                                                            is_foreign);
 
                     Py_XDECREF (py_type);
                     break;
@@ -1703,7 +1707,8 @@ _pygi_argument_release (GIArgument   *arg,
                         if (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING) {
                             g_closure_unref (arg->v_pointer);
                         }
-                    } else if (g_struct_info_is_foreign ( (GIStructInfo*) info)) {
+                    } else if (info_type == GI_INFO_TYPE_STRUCT &&
+                               g_struct_info_is_foreign ((GIStructInfo*) info)) {
                         if (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING) {
                             pygi_struct_foreign_release (info, arg->v_pointer);
                         }
diff --git a/gi/pygi-struct-marshal.c b/gi/pygi-struct-marshal.c
index 5068064..9bf3b54 100644
--- a/gi/pygi-struct-marshal.c
+++ b/gi/pygi-struct-marshal.c
@@ -528,7 +528,6 @@ arg_struct_from_py_setup (PyGIArgCache     *arg_cache,
                           GITransfer        transfer)
 {
     PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache;
-    iface_cache->is_foreign = g_struct_info_is_foreign ( (GIStructInfo*)iface_info);
 
     if (g_struct_info_is_gtype_struct ((GIStructInfo*)iface_info)) {
         arg_cache->from_py_marshaller = arg_type_class_from_py_marshal;
@@ -560,7 +559,6 @@ arg_struct_to_py_setup (PyGIArgCache     *arg_cache,
                         GIArgInfo        *arg_info)
 {
     PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache;
-    iface_cache->is_foreign = g_struct_info_is_foreign ( (GIStructInfo*)iface_info);
 
     /* HACK to force GtkTreeModel:iter_next() and iter_previous() vfunc implementations
      * to receive their Gtk.TreeIter argument as pass-by-reference. We create a new
@@ -615,6 +613,7 @@ pygi_arg_struct_new_from_info (GITypeInfo      *type_info,
                                GIInterfaceInfo *iface_info)
 {
     PyGIArgCache *cache = NULL;
+    PyGIInterfaceCache *iface_cache;
 
     cache = pygi_arg_interface_new_from_info (type_info,
                                               arg_info,
@@ -624,6 +623,10 @@ pygi_arg_struct_new_from_info (GITypeInfo      *type_info,
     if (cache == NULL)
         return NULL;
 
+    iface_cache = (PyGIInterfaceCache *)cache;
+    iface_cache->is_foreign = (g_base_info_get_type ((GIBaseInfo *) iface_info) == GI_INFO_TYPE_STRUCT) &&
+                              (g_struct_info_is_foreign ((GIStructInfo*) iface_info));
+
     if (direction & PYGI_DIRECTION_FROM_PYTHON) {
         arg_struct_from_py_setup (cache, iface_info, transfer);
     }