girepository: Add GI_VFUNC_THROWS

Virtual functions can definitely throw an error.  Right now the
scanner omits the GError parameter for them and adds throws="1", but
g-ir-compiler ignores this.

https://bugzilla.gnome.org/show_bug.cgi?id=669332

2 files changed, 18 insertions, 1 deletions

diff --git a/tests/gimarshallingtests.c b/tests/gimarshallingtests.c
index 66a6dad1..8734a903 100644
--- a/tests/gimarshallingtests.c
+++ b/tests/gimarshallingtests.c
@@ -3946,6 +3946,17 @@ gi_marshalling_tests_object_vfunc_return_value_and_multiple_out_parameters (GIMa
     return return_value;
 }
 
+gboolean
+gi_marshalling_tests_object_vfunc_meth_with_error (GIMarshallingTestsObject *self,
+                                                   gint                      x,
+                                                   GError                  **error)
+{
+  gulong local = 0x12345678;
+  gboolean ret = GI_MARSHALLING_TESTS_OBJECT_GET_CLASS (self)->vfunc_meth_with_err (self, x, error);
+  g_assert_cmpint(local, ==, 0x12345678);
+  return ret;
+}
+
 G_DEFINE_TYPE (GIMarshallingTestsSubObject, gi_marshalling_tests_sub_object, GI_MARSHALLING_TESTS_TYPE_OBJECT);
 
 static void
@@ -4280,7 +4291,6 @@ gi_marshalling_tests_overrides_object_method (GIMarshallingTestsOverridesObject
     return 42;
 }
 
-
 /**
  * gi_marshalling_tests_overrides_object_returnv:
  *
diff --git a/tests/gimarshallingtests.h b/tests/gimarshallingtests.h
index e4f5cb9b..1d66991f 100644
--- a/tests/gimarshallingtests.h
+++ b/tests/gimarshallingtests.h
@@ -737,6 +737,12 @@ struct _GIMarshallingTestsObjectClass
      */
     glong (* vfunc_return_value_and_multiple_out_parameters) (GIMarshallingTestsObject *self, glong *a, glong *b);
 
+    /**
+     * GIMarshallingTestsObjectClass::vfunc_meth_with_err:
+     * @x:
+     * @error: A #GError
+     */
+    gboolean (*vfunc_meth_with_err) (GIMarshallingTestsObject *object, gint x, GError **error);
 };
 
 struct _GIMarshallingTestsObject
@@ -766,6 +772,7 @@ void gi_marshalling_tests_object_vfunc_one_out_parameter (GIMarshallingTestsObje
 void gi_marshalling_tests_object_vfunc_multiple_out_parameters (GIMarshallingTestsObject *self, gfloat *a, gfloat *b);
 glong gi_marshalling_tests_object_vfunc_return_value_and_one_out_parameter (GIMarshallingTestsObject *self, glong *a);
 glong gi_marshalling_tests_object_vfunc_return_value_and_multiple_out_parameters (GIMarshallingTestsObject *self, glong *a, glong *b);
+gboolean gi_marshalling_tests_object_vfunc_meth_with_error (GIMarshallingTestsObject *object, gint x, GError **error);
 
 GIMarshallingTestsObject *gi_marshalling_tests_object_none_return (void);
 GIMarshallingTestsObject *gi_marshalling_tests_object_full_return (void);