svn commit: r288136 - in stable: 10/lib/libz 9/lib/libz

[Dimitry Andric]

Author: dim
Date: Tue Sep 22 22:35:42 2015
New Revision: 288136
URL: https://svnweb.freebsd.org/changeset/base/288136

Log:
  MFC r287541:
  
  In libz's inflateMark(), avoid left-shifting a negative integer, which
  is undefined.
  
  Reviewed by:	delphij
  Differential Revision: https://reviews.freebsd.org/D3344

Modified:
  stable/9/lib/libz/inflate.c
Directory Properties:
  stable/9/   (props changed)
  stable/9/lib/   (props changed)
  stable/9/lib/libz/   (props changed)

Changes in other areas also in this revision:
Modified:
  stable/10/lib/libz/inflate.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/9/lib/libz/inflate.c
==============================================================================
--- stable/9/lib/libz/inflate.c	Tue Sep 22 22:27:45 2015	(r288135)
+++ stable/9/lib/libz/inflate.c	Tue Sep 22 22:35:42 2015	(r288136)
@@ -1504,7 +1504,7 @@ z_streamp strm;
 {
     struct inflate_state FAR *state;
 
-    if (strm == Z_NULL || strm->state == Z_NULL) return -1L << 16;
+    if (strm == Z_NULL || strm->state == Z_NULL) return -(1L << 16);
     state = (struct inflate_state FAR *)strm->state;
     return ((long)(state->back) << 16) +
         (state->mode == COPY ? state->length :