diff --git a/include/ChangeLog b/include/ChangeLog
index 2ddc1d420..08a124a85 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2005-04-16  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* libiberty.h (unlock_stream): New.
+
 2005-04-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* libiberty.h (fopen_unlocked, fdopen_unlocked, freopen_unlocked):
diff --git a/include/libiberty.h b/include/libiberty.h
index 671a1239c..8254aafab 100644
--- a/include/libiberty.h
+++ b/include/libiberty.h
@@ -48,6 +48,12 @@ extern "C" {
 
 #include <stdio.h>
 
+/* If the OS supports it, ensure that the supplied stream is setup to
+   avoid any multi-threaded locking.  Otherwise leave the FILE pointer
+   unchanged.  If the stream is NULL do nothing.  */
+
+extern void unlock_stream (FILE *);
+
 /* Open and return a FILE pointer.  If the OS supports it, ensure that
    the stream is setup to avoid any multi-threaded locking.  Otherwise
    return the FILE pointer unchanged.  */