diff --git a/coregrind/vg_include.h b/coregrind/vg_include.h
index 290fbec..840282b 100644
--- a/coregrind/vg_include.h
+++ b/coregrind/vg_include.h
@@ -691,6 +691,9 @@
    error message generation. */
 extern ThreadId VG_(identify_stack_addr)( Addr a );
 
+/* Nuke all threads except tid. */
+extern void VG_(nuke_all_threads_except) ( ThreadId me );
+
 
 /* Return codes from the scheduler. */
 typedef