actually, they're unsigned



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4766 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/massif/ms_main.c b/massif/ms_main.c
index eda8186..73c49d0 100644
--- a/massif/ms_main.c
+++ b/massif/ms_main.c
@@ -1689,7 +1689,7 @@
 print_summary(ULong total_ST, ULong heap_ST, ULong heap_admin_ST,
               ULong stack_ST)
 {
-   VG_(message)(Vg_UserMsg, "Total spacetime:   %,lld ms.B", total_ST);
+   VG_(message)(Vg_UserMsg, "Total spacetime:   %,llu ms.B", total_ST);
 
    // Heap --------------------------------------------------------------
    if (clo_heap)