Index: zlib-1.2.11/contrib/s390/dfltcc_deflate.h
===================================================================
--- zlib-1.2.11.orig/contrib/s390/dfltcc_deflate.h
+++ zlib-1.2.11/contrib/s390/dfltcc_deflate.h
@@ -45,7 +45,7 @@ int ZLIB_INTERNAL dfltcc_deflate_get_dic
 #define DEFLATE_DONE dfltcc_deflate_done
 #define DEFLATE_BOUND_ADJUST_COMPLEN(strm, complen, source_len) \
     do { \
-        if (dfltcc_can_deflate((strm))) \
+        if (deflateStateCheck((strm)) || dfltcc_can_deflate((strm))) \
             (complen) = DEFLATE_BOUND_COMPLEN(source_len); \
     } while (0)
 #define DEFLATE_NEED_CONSERVATIVE_BOUND(strm) (dfltcc_can_deflate((strm)))