diff --git a/lib/isc/mem_api.c b/lib/isc/mem_api.c
index 3d0ed3828b..85abb9b450 100644
--- a/lib/isc/mem_api.c
+++ b/lib/isc/mem_api.c
@@ -14,7 +14,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: mem_api.c,v 1.7 2010/04/09 23:51:01 tbox Exp $ */
+/* $Id: mem_api.c,v 1.8 2010/08/12 21:30:26 jinmei Exp $ */
 
 #include <config.h>
 
@@ -199,6 +199,13 @@ isc_mem_inuse(isc_mem_t *mctx) {
 	return (mctx->methods->inuse(mctx));
 }
 
+isc_boolean_t
+isc_mem_isovermem(isc_mem_t *mctx) {
+	REQUIRE(ISCAPI_MCTX_VALID(mctx));
+
+	return (mctx->methods->isovermem(mctx));
+}
+
 void
 isc_mem_setname(isc_mem_t *mctx, const char *name, void *tag) {
 	REQUIRE(ISCAPI_MCTX_VALID(mctx));