#  valgrind suppression for zlib
#  https://bugs.launchpad.net/percona-server/+bug/794837
--- a/mysql-test/valgrind.supp
+++ b/mysql-test/valgrind.supp
@@ -876,6 +876,15 @@
    fun:buf_buddy_free_low
    fun:buf_buddy_free
 }
+{
+   zlib longest_match false positive
+   Memcheck:Cond
+   fun:longest_match
+   fun:deflate_slow
+   fun:deflate
+   fun:compress
+   fun:my_compress_alloc
+}
 
 # Note the wildcard in the (mangled) function signatures of
 # write_keys() and find_all_keys().