Index: subversion/libsvn_subr/mergeinfo.c
===================================================================
--- subversion/libsvn_subr/mergeinfo.c	(revision 1167556)
+++ subversion/libsvn_subr/mergeinfo.c	(working copy)
@@ -436,6 +436,7 @@ combine_with_lastrange(const svn_merge_range_t *ne
 
               /* Some of the above cases might have put *RANGELIST out of
                  order, so re-sort.*/
+              SVN_DBG(("Sorting with %ld elements\n", (long)rangelist->nelts));
               qsort(rangelist->elts, rangelist->nelts, rangelist->elt_size,
                     svn_sort_compare_ranges);
         }