diff -urN glom-1.2.2/glom/libglom/python_embed/py_glom_record.cc glom-1.2.2.new/glom/libglom/python_embed/py_glom_record.cc
--- glom-1.2.2/glom/libglom/python_embed/py_glom_record.cc	2006-10-10 18:04:38.000000000 +0200
+++ glom-1.2.2.new/glom/libglom/python_embed/py_glom_record.cc	2006-12-22 08:53:23.000000000 +0100
@@ -170,7 +170,7 @@
 
 
 
-static int
+static Py_ssize_t
 Record_tp_as_mapping_length(PyGlomRecord *self)
 {
   return self->m_pMap_field_values->size();
@@ -228,7 +228,7 @@
 */
 
 static PyMappingMethods Record_tp_as_mapping = {
-    (inquiry)Record_tp_as_mapping_length,
+    (lenfunc)Record_tp_as_mapping_length,
     (binaryfunc)Record_tp_as_mapping_getitem,
     (objobjargproc)0 /* Record_tp_as_mapping_setitem */
 };
diff -urN glom-1.2.2/glom/libglom/python_embed/py_glom_related.cc glom-1.2.2.new/glom/libglom/python_embed/py_glom_related.cc
--- glom-1.2.2/glom/libglom/python_embed/py_glom_related.cc	2006-05-27 17:44:17.000000000 +0200
+++ glom-1.2.2.new/glom/libglom/python_embed/py_glom_related.cc	2006-12-22 08:53:36.000000000 +0100
@@ -102,7 +102,7 @@
 }
 
 
-static int
+static Py_ssize_t
 Related_tp_as_mapping_length(PyGlomRelated *self)
 {
   return self->m_pMap_relationships->size();
@@ -188,7 +188,7 @@
 */
 
 static PyMappingMethods Related_tp_as_mapping = {
-    (inquiry)Related_tp_as_mapping_length,
+    (lenfunc)Related_tp_as_mapping_length,
     (binaryfunc)Related_tp_as_mapping_getitem,
     (objobjargproc)0 /* Related_tp_as_mapping_setitem */
 };
diff -urN glom-1.2.2/glom/libglom/python_embed/py_glom_relatedrecord.cc glom-1.2.2.new/glom/libglom/python_embed/py_glom_relatedrecord.cc
--- glom-1.2.2/glom/libglom/python_embed/py_glom_relatedrecord.cc	2006-05-27 11:26:37.000000000 +0200
+++ glom-1.2.2.new/glom/libglom/python_embed/py_glom_relatedrecord.cc	2006-12-22 08:53:50.000000000 +0100
@@ -140,7 +140,7 @@
 */
 
 
-static int
+static Py_ssize_t
 RelatedRecord_tp_as_mapping_length(PyGlomRelatedRecord *self)
 {
   return self->m_pMap_field_values->size();
@@ -237,7 +237,7 @@
 */
 
 static PyMappingMethods RelatedRecord_tp_as_mapping = {
-    (inquiry)RelatedRecord_tp_as_mapping_length,
+    (lenfunc)RelatedRecord_tp_as_mapping_length,
     (binaryfunc)RelatedRecord_tp_as_mapping_getitem,
     (objobjargproc)0 /* RelatedRecord_tp_as_mapping_setitem */
 };