--- src/swig_runtime.h	2005-11-16 10:18:44.000000000 -0700
+++ /Users/bwaters/_today/swig_runtime.h	2006-08-30 21:14:40.000000000 -0600
@@ -1137,7 +1137,7 @@
     obj = pyobj;
     if (PyCFunction_Check(obj)) {
       /* here we get the method pointer for callbacks */
-      char *doc = (((PyCFunctionObject *)obj) -> m_ml -> ml_doc);
+      const char *doc = (((PyCFunctionObject *)obj) -> m_ml -> ml_doc);
       c = doc ? strstr(doc, "swig_ptr: ") : 0;
       if (c) {
 	c = ty ? SWIG_UnpackVoidPtr(c + 10, &vptr, ty->name) : 0;