Update zlib to version 1.2.11

46 files changed, 92 insertions, 98 deletions

diff --git a/compat/zlib/CMakeLists.txt b/compat/zlib/CMakeLists.txt
index 1a954a6..0fe939d 100644
--- a/compat/zlib/CMakeLists.txt
+++ b/compat/zlib/CMakeLists.txt
@@ -3,7 +3,7 @@ set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
 
 project(zlib C)
 
-set(VERSION "1.2.10")
+set(VERSION "1.2.11")
 
 option(ASM686 "Enable building i686 assembly implementation")
 option(AMD64 "Enable building amd64 assembly implementation")
diff --git a/compat/zlib/ChangeLog b/compat/zlib/ChangeLog
index fed9adb..30199a6 100644
--- a/compat/zlib/ChangeLog
+++ b/compat/zlib/ChangeLog
@@ -1,6 +1,10 @@
 
                 ChangeLog file for zlib
 
+Changes in 1.2.11 (15 Jan 2017)
+- Fix deflate stored bug when pulling last block from window
+- Permit immediate deflateParams changes before any deflate input
+
 Changes in 1.2.10 (2 Jan 2017)
 - Avoid warnings on snprintf() return value
 - Fix bug in deflate_stored() for zero-length input
diff --git a/compat/zlib/Makefile.in b/compat/zlib/Makefile.in
index 1852192..5a77949 100644
--- a/compat/zlib/Makefile.in
+++ b/compat/zlib/Makefile.in
@@ -1,5 +1,5 @@
 # Makefile for zlib
-# Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
+# Copyright (C) 1995-2017 Jean-loup Gailly, Mark Adler
 # For conditions of distribution and use, see copyright notice in zlib.h
 
 # To compile and test, type:
@@ -32,7 +32,7 @@ CPP=$(CC) -E
 
 STATICLIB=libz.a
 SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.10
+SHAREDLIBV=libz.so.1.2.11
 SHAREDLIBM=libz.so.1
 LIBS=$(STATICLIB) $(SHAREDLIBV)
 
diff --git a/compat/zlib/README b/compat/zlib/README
index e2250bd..51106de 100644
--- a/compat/zlib/README
+++ b/compat/zlib/README
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY
 
-zlib 1.2.10 is a general purpose data compression library.  All the code is
+zlib 1.2.11 is a general purpose data compression library.  All the code is
 thread safe.  The data format used by the zlib library is described by RFCs
 (Request for Comments) 1950 to 1952 in the files
 http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
@@ -31,7 +31,7 @@ Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
 issue of Dr.  Dobb's Journal; a copy of the article is available at
 http://marknelson.us/1997/01/01/zlib-engine/ .
 
-The changes made in version 1.2.10 are documented in the file ChangeLog.
+The changes made in version 1.2.11 are documented in the file ChangeLog.
 
 Unsupported third party contributions are provided in directory contrib/ .
 
diff --git a/compat/zlib/contrib/delphi/ZLib.pas b/compat/zlib/contrib/delphi/ZLib.pas
index e9d72f0..060e199 100644
--- a/compat/zlib/contrib/delphi/ZLib.pas
+++ b/compat/zlib/contrib/delphi/ZLib.pas
@@ -152,7 +152,7 @@ procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
   const OutBuf: Pointer; BufSize: Integer);
 
 const
-  zlib_version = '1.2.10';
+  zlib_version = '1.2.11';
 
 type
   EZlibError = class(Exception);
diff --git a/compat/zlib/contrib/dotzlib/DotZLib/UnitTests.cs b/compat/zlib/contrib/dotzlib/DotZLib/UnitTests.cs
index a0e3985..44f7633 100644
--- a/compat/zlib/contrib/dotzlib/DotZLib/UnitTests.cs
+++ b/compat/zlib/contrib/dotzlib/DotZLib/UnitTests.cs
@@ -156,7 +156,7 @@ namespace DotZLibTests
         public void Info_Version()

         {

             Info info = new Info();

-            Assert.AreEqual("1.2.10", Info.Version);

+            Assert.AreEqual("1.2.11", Info.Version);

             Assert.AreEqual(32, info.SizeOfUInt);

             Assert.AreEqual(32, info.SizeOfULong);

             Assert.AreEqual(32, info.SizeOfPointer);

diff --git a/compat/zlib/contrib/infback9/inftree9.c b/compat/zlib/contrib/infback9/inftree9.c
index ea56047..5f4a767 100644
--- a/compat/zlib/contrib/infback9/inftree9.c
+++ b/compat/zlib/contrib/infback9/inftree9.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate9_copyright[] =
-   " inflate9 1.2.10 Copyright 1995-2017 Mark Adler ";
+   " inflate9 1.2.11 Copyright 1995-2017 Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -64,7 +64,7 @@ unsigned short FAR *work;
     static const unsigned short lext[31] = { /* Length codes 257..285 extra */
         128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129,
         130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132,
-        133, 133, 133, 133, 144, 192, 202};
+        133, 133, 133, 133, 144, 77, 202};
     static const unsigned short dbase[32] = { /* Distance codes 0..31 base */
         1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49,
         65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073,
diff --git a/compat/zlib/contrib/minizip/configure.ac b/compat/zlib/contrib/minizip/configure.ac
index bbb2283..5b11970 100644
--- a/compat/zlib/contrib/minizip/configure.ac
+++ b/compat/zlib/contrib/minizip/configure.ac
@@ -1,7 +1,7 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_INIT([minizip], [1.2.10], [bugzilla.redhat.com])
+AC_INIT([minizip], [1.2.11], [bugzilla.redhat.com])
 AC_CONFIG_SRCDIR([minizip.c])
 AM_INIT_AUTOMAKE([foreign])
 LT_INIT
diff --git a/compat/zlib/contrib/pascal/zlibpas.pas b/compat/zlib/contrib/pascal/zlibpas.pas
index 2330898..a0dff11 100644
--- a/compat/zlib/contrib/pascal/zlibpas.pas
+++ b/compat/zlib/contrib/pascal/zlibpas.pas
@@ -10,7 +10,7 @@ unit zlibpas;
 interface
 
 const
-  ZLIB_VERSION = '1.2.10';
+  ZLIB_VERSION = '1.2.11';
   ZLIB_VERNUM  = $12a0;
 
 type
diff --git a/compat/zlib/contrib/vstudio/readme.txt b/compat/zlib/contrib/vstudio/readme.txt
index 98d8a05..f67eae8 100644
--- a/compat/zlib/contrib/vstudio/readme.txt
+++ b/compat/zlib/contrib/vstudio/readme.txt
@@ -1,4 +1,4 @@
-Building instructions for the DLL versions of Zlib 1.2.10

+Building instructions for the DLL versions of Zlib 1.2.11

 ========================================================

 

 This directory contains projects that build zlib and minizip using

diff --git a/compat/zlib/contrib/vstudio/vc10/zlib.rc b/compat/zlib/contrib/vstudio/vc10/zlib.rc
index f1c19bc..fee177a 100644
--- a/compat/zlib/contrib/vstudio/vc10/zlib.rc
+++ b/compat/zlib/contrib/vstudio/vc10/zlib.rc
@@ -2,8 +2,8 @@
 

 #define IDR_VERSION1  1

 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE

-  FILEVERSION	 1, 2, 10, 0

-  PRODUCTVERSION 1, 2, 10, 0

+  FILEVERSION	 1, 2, 11, 0

+  PRODUCTVERSION 1, 2, 11, 0

   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK

   FILEFLAGS	0

   FILEOS	VOS_DOS_WINDOWS32

@@ -17,7 +17,7 @@ BEGIN
 

     BEGIN

       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"

-      VALUE "FileVersion",	"1.2.10\0"

+      VALUE "FileVersion",	"1.2.11\0"

       VALUE "InternalName",	"zlib\0"

       VALUE "OriginalFilename",	"zlibwapi.dll\0"

       VALUE "ProductName",	"ZLib.DLL\0"

diff --git a/compat/zlib/contrib/vstudio/vc11/zlib.rc b/compat/zlib/contrib/vstudio/vc11/zlib.rc
index f1c19bc..fee177a 100644
--- a/compat/zlib/contrib/vstudio/vc11/zlib.rc
+++ b/compat/zlib/contrib/vstudio/vc11/zlib.rc
@@ -2,8 +2,8 @@
 

 #define IDR_VERSION1  1

 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE

-  FILEVERSION	 1, 2, 10, 0

-  PRODUCTVERSION 1, 2, 10, 0

+  FILEVERSION	 1, 2, 11, 0

+  PRODUCTVERSION 1, 2, 11, 0

   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK

   FILEFLAGS	0

   FILEOS	VOS_DOS_WINDOWS32

@@ -17,7 +17,7 @@ BEGIN
 

     BEGIN

       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"

-      VALUE "FileVersion",	"1.2.10\0"

+      VALUE "FileVersion",	"1.2.11\0"

       VALUE "InternalName",	"zlib\0"

       VALUE "OriginalFilename",	"zlibwapi.dll\0"

       VALUE "ProductName",	"ZLib.DLL\0"

diff --git a/compat/zlib/contrib/vstudio/vc12/zlib.rc b/compat/zlib/contrib/vstudio/vc12/zlib.rc
index ef38298..c4e4b01 100644
--- a/compat/zlib/contrib/vstudio/vc12/zlib.rc
+++ b/compat/zlib/contrib/vstudio/vc12/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1, 2, 10, 0
-  PRODUCTVERSION 1, 2, 10, 0
+  FILEVERSION	 1, 2, 11, 0
+  PRODUCTVERSION 1, 2, 11, 0
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.10\0"
+      VALUE "FileVersion",	"1.2.11\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlibwapi.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/compat/zlib/contrib/vstudio/vc14/miniunz.vcxproj.user b/compat/zlib/contrib/vstudio/vc14/miniunz.vcxproj.user
deleted file mode 100644
index abe8dd8..0000000
--- a/compat/zlib/contrib/vstudio/vc14/miniunz.vcxproj.user
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
-</Project>
\ No newline at end of file
diff --git a/compat/zlib/contrib/vstudio/vc14/minizip.vcxproj.user b/compat/zlib/contrib/vstudio/vc14/minizip.vcxproj.user
deleted file mode 100644
index abe8dd8..0000000
--- a/compat/zlib/contrib/vstudio/vc14/minizip.vcxproj.user
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
-</Project>
\ No newline at end of file
diff --git a/compat/zlib/contrib/vstudio/vc14/testzlib.vcxproj.user b/compat/zlib/contrib/vstudio/vc14/testzlib.vcxproj.user
deleted file mode 100644
index abe8dd8..0000000
--- a/compat/zlib/contrib/vstudio/vc14/testzlib.vcxproj.user
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
-</Project>
\ No newline at end of file
diff --git a/compat/zlib/contrib/vstudio/vc14/testzlibdll.vcxproj.user b/compat/zlib/contrib/vstudio/vc14/testzlibdll.vcxproj.user
deleted file mode 100644
index abe8dd8..0000000
--- a/compat/zlib/contrib/vstudio/vc14/testzlibdll.vcxproj.user
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
-</Project>
\ No newline at end of file
diff --git a/compat/zlib/contrib/vstudio/vc14/zlib.rc b/compat/zlib/contrib/vstudio/vc14/zlib.rc
index ef38298..c4e4b01 100644
--- a/compat/zlib/contrib/vstudio/vc14/zlib.rc
+++ b/compat/zlib/contrib/vstudio/vc14/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1, 2, 10, 0
-  PRODUCTVERSION 1, 2, 10, 0
+  FILEVERSION	 1, 2, 11, 0
+  PRODUCTVERSION 1, 2, 11, 0
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@ BEGIN
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.10\0"
+      VALUE "FileVersion",	"1.2.11\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlibwapi.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/compat/zlib/contrib/vstudio/vc14/zlibstat.vcxproj.user b/compat/zlib/contrib/vstudio/vc14/zlibstat.vcxproj.user
deleted file mode 100644
index abe8dd8..0000000
--- a/compat/zlib/contrib/vstudio/vc14/zlibstat.vcxproj.user
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
-</Project>
\ No newline at end of file
diff --git a/compat/zlib/contrib/vstudio/vc14/zlibvc.vcxproj.user b/compat/zlib/contrib/vstudio/vc14/zlibvc.vcxproj.user
deleted file mode 100644
index abe8dd8..0000000
--- a/compat/zlib/contrib/vstudio/vc14/zlibvc.vcxproj.user
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
-</Project>
\ No newline at end of file
diff --git a/compat/zlib/contrib/vstudio/vc9/zlib.rc b/compat/zlib/contrib/vstudio/vc9/zlib.rc
index f1c19bc..fee177a 100644
--- a/compat/zlib/contrib/vstudio/vc9/zlib.rc
+++ b/compat/zlib/contrib/vstudio/vc9/zlib.rc
@@ -2,8 +2,8 @@
 

 #define IDR_VERSION1  1

 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE

-  FILEVERSION	 1, 2, 10, 0

-  PRODUCTVERSION 1, 2, 10, 0

+  FILEVERSION	 1, 2, 11, 0

+  PRODUCTVERSION 1, 2, 11, 0

   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK

   FILEFLAGS	0

   FILEOS	VOS_DOS_WINDOWS32

@@ -17,7 +17,7 @@ BEGIN
 

     BEGIN

       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"

-      VALUE "FileVersion",	"1.2.10\0"

+      VALUE "FileVersion",	"1.2.11\0"

       VALUE "InternalName",	"zlib\0"

       VALUE "OriginalFilename",	"zlibwapi.dll\0"

       VALUE "ProductName",	"ZLib.DLL\0"

diff --git a/compat/zlib/deflate.c b/compat/zlib/deflate.c
index 2ad890e..1ec7614 100644
--- a/compat/zlib/deflate.c
+++ b/compat/zlib/deflate.c
@@ -52,7 +52,7 @@
 #include "deflate.h"
 
 const char deflate_copyright[] =
-   " deflate 1.2.10 Copyright 1995-2017 Jean-loup Gailly and Mark Adler ";
+   " deflate 1.2.11 Copyright 1995-2017 Jean-loup Gailly and Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -586,7 +586,8 @@ int ZEXPORT deflateParams(strm, level, strategy)
     }
     func = configuration_table[s->level].func;
 
-    if ((strategy != s->strategy || func != configuration_table[level].func)) {
+    if ((strategy != s->strategy || func != configuration_table[level].func) &&
+        s->high_water) {
         /* Flush the last buffer: */
         int err = deflate(strm, Z_BLOCK);
         if (err == Z_STREAM_ERROR)
@@ -1671,8 +1672,6 @@ local block_state deflate_stored(s, flush)
             len = left + s->strm->avail_in;     /* limit len to the input */
         if (len > have)
             len = have;                         /* limit len to the output */
-        if (left > len)
-            left = len;                         /* limit window pull to len */
 
         /* If the stored block would be less than min_block in length, or if
          * unable to copy all of the available input when flushing, then try
@@ -1681,13 +1680,13 @@ local block_state deflate_stored(s, flush)
          */
         if (len < min_block && ((len == 0 && flush != Z_FINISH) ||
                                 flush == Z_NO_FLUSH ||
-                                len - left != s->strm->avail_in))
+                                len != left + s->strm->avail_in))
             break;
 
         /* Make a dummy stored block in pending to get the header bytes,
          * including any pending bits. This also updates the debugging counts.
          */
-        last = flush == Z_FINISH && len - left == s->strm->avail_in ? 1 : 0;
+        last = flush == Z_FINISH && len == left + s->strm->avail_in ? 1 : 0;
         _tr_stored_block(s, (char *)0, 0L, last);
 
         /* Replace the lengths in the dummy stored block with len. */
@@ -1699,14 +1698,16 @@ local block_state deflate_stored(s, flush)
         /* Write the stored block header bytes. */
         flush_pending(s->strm);
 
-        /* Update debugging counts for the data about to be copied. */
 #ifdef ZLIB_DEBUG
+        /* Update debugging counts for the data about to be copied. */
         s->compressed_len += len << 3;
         s->bits_sent += len << 3;
 #endif
 
         /* Copy uncompressed bytes from the window to next_out. */
         if (left) {
+            if (left > len)
+                left = len;
             zmemcpy(s->strm->next_out, s->window + s->block_start, left);
             s->strm->next_out += left;
             s->strm->avail_out -= left;
@@ -1756,6 +1757,8 @@ local block_state deflate_stored(s, flush)
         s->block_start = s->strstart;
         s->insert += MIN(used, s->w_size - s->insert);
     }
+    if (s->high_water < s->strstart)
+        s->high_water = s->strstart;
 
     /* If the last block was written to next_out, then done. */
     if (last)
@@ -1783,6 +1786,8 @@ local block_state deflate_stored(s, flush)
         read_buf(s->strm, s->window + s->strstart, have);
         s->strstart += have;
     }
+    if (s->high_water < s->strstart)
+        s->high_water = s->strstart;
 
     /* There was not enough avail_out to write a complete worthy or flushed
      * stored block to next_out. Write a stored block to pending instead, if we
diff --git a/compat/zlib/gzlib.c b/compat/zlib/gzlib.c
index e142ffb..4105e6a 100644
--- a/compat/zlib/gzlib.c
+++ b/compat/zlib/gzlib.c
@@ -1,5 +1,5 @@
 /* gzlib.c -- zlib functions common to reading and writing gzip files
- * Copyright (C) 2004, 2010, 2011, 2012, 2013, 2016 Mark Adler
+ * Copyright (C) 2004-2017 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
diff --git a/compat/zlib/gzwrite.c b/compat/zlib/gzwrite.c
index 1ec1da4..c7b5651 100644
--- a/compat/zlib/gzwrite.c
+++ b/compat/zlib/gzwrite.c
@@ -1,5 +1,5 @@
 /* gzwrite.c -- zlib functions for writing gzip files
- * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler
+ * Copyright (C) 2004-2017 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
diff --git a/compat/zlib/inffast.c b/compat/zlib/inffast.c
index 29eb7d8..0dbd1db 100644
--- a/compat/zlib/inffast.c
+++ b/compat/zlib/inffast.c
@@ -1,5 +1,5 @@
 /* inffast.c -- fast decoding
- * Copyright (C) 1995-2008, 2010, 2013, 2016 Mark Adler
+ * Copyright (C) 1995-2017 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
diff --git a/compat/zlib/inftrees.c b/compat/zlib/inftrees.c
index 8a904dd..2ea08fc 100644
--- a/compat/zlib/inftrees.c
+++ b/compat/zlib/inftrees.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate_copyright[] =
-   " inflate 1.2.10 Copyright 1995-2017 Mark Adler ";
+   " inflate 1.2.11 Copyright 1995-2017 Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -62,7 +62,7 @@ unsigned short FAR *work;
         35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
     static const unsigned short lext[31] = { /* Length codes 257..285 extra */
         16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
-        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 192, 202};
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 77, 202};
     static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
         1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
         257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
diff --git a/compat/zlib/os400/README400 b/compat/zlib/os400/README400
index 28dca8c..4f98334 100644
--- a/compat/zlib/os400/README400
+++ b/compat/zlib/os400/README400
@@ -1,4 +1,4 @@
-        ZLIB version 1.2.10 for OS/400 installation instructions
+        ZLIB version 1.2.11 for OS/400 installation instructions
 
 1) Download and unpack the zlib tarball to some IFS directory.
    (i.e.: /path/to/the/zlib/ifs/source/directory)
diff --git a/compat/zlib/os400/make.sh b/compat/zlib/os400/make.sh
index ddbfb16..19eec11 100644
--- a/compat/zlib/os400/make.sh
+++ b/compat/zlib/os400/make.sh
@@ -260,7 +260,7 @@ fi
 echo '#pragma comment(user, "ZLIB version '"${VERSION}"'")' > os400.c
 echo '#pragma comment(user, __DATE__)' >> os400.c
 echo '#pragma comment(user, __TIME__)' >> os400.c
-echo '#pragma comment(copyright, "Copyright (C) 1995-2016 Jean-Loup Gailly, Mark Adler. OS/400 version by P. Monnerat.")' >> os400.c
+echo '#pragma comment(copyright, "Copyright (C) 1995-2017 Jean-Loup Gailly, Mark Adler. OS/400 version by P. Monnerat.")' >> os400.c
 make_module     OS400           os400.c
 LINK=                           # No need to rebuild service program yet.
 MODULES=
diff --git a/compat/zlib/os400/zlib.inc b/compat/zlib/os400/zlib.inc
index a2147dd..c6aca2c 100644
--- a/compat/zlib/os400/zlib.inc
+++ b/compat/zlib/os400/zlib.inc
@@ -1,7 +1,7 @@
       *  ZLIB.INC - Interface to the general purpose compression library
       *
       *  ILE RPG400 version by Patrick Monnerat, DATASPHERE.
-      *  Version 1.2.10
+      *  Version 1.2.11
       *
       *
       *  WARNING:
@@ -22,12 +22,12 @@
       *
       *  Versioning information.
       *
-     D ZLIB_VERSION    C                   '1.2.10'
+     D ZLIB_VERSION    C                   '1.2.11'
      D ZLIB_VERNUM     C                   X'12a0'
      D ZLIB_VER_MAJOR  C                   1
      D ZLIB_VER_MINOR  C                   2
      D ZLIB_VER_REVISION...
-     D                 C                   10
+     D                 C                   11
      D ZLIB_VER_SUBREVISION...
      D                 C                   0
       *
diff --git a/compat/zlib/qnx/package.qpg b/compat/zlib/qnx/package.qpg
index d9a1229..31e8e90 100644
--- a/compat/zlib/qnx/package.qpg
+++ b/compat/zlib/qnx/package.qpg
@@ -25,10 +25,10 @@
       <QPG:Files>
          <QPG:Add file="../zconf.h" install="/opt/include/" user="root:sys" permission="644"/>
          <QPG:Add file="../zlib.h" install="/opt/include/" user="root:sys" permission="644"/>
-         <QPG:Add file="../libz.so.1.2.10" install="/opt/lib/" user="root:bin" permission="644"/>
-         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.10"/>
-         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.10"/>
-         <QPG:Add file="../libz.so.1.2.10" install="/opt/lib/" component="slib"/>
+         <QPG:Add file="../libz.so.1.2.11" install="/opt/lib/" user="root:bin" permission="644"/>
+         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.11"/>
+         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.11"/>
+         <QPG:Add file="../libz.so.1.2.11" install="/opt/lib/" component="slib"/>
       </QPG:Files>
 
       <QPG:PackageFilter>
@@ -63,7 +63,7 @@
             </QPM:ProductDescription>
 
             <QPM:ReleaseDescription>
-               <QPM:ReleaseVersion>1.2.10</QPM:ReleaseVersion>
+               <QPM:ReleaseVersion>1.2.11</QPM:ReleaseVersion>
                <QPM:ReleaseUrgency>Medium</QPM:ReleaseUrgency>
                <QPM:ReleaseStability>Stable</QPM:ReleaseStability>
                <QPM:ReleaseNoteMinor></QPM:ReleaseNoteMinor>
diff --git a/compat/zlib/treebuild.xml b/compat/zlib/treebuild.xml
index a530cc0..fd75525 100644
--- a/compat/zlib/treebuild.xml
+++ b/compat/zlib/treebuild.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" ?>
-<package name="zlib" version="1.2.10">
-    <library name="zlib" dlversion="1.2.10" dlname="z">
+<package name="zlib" version="1.2.11">
+    <library name="zlib" dlversion="1.2.11" dlname="z">
 	<property name="description"> zip compression library </property>
 	<property name="include-target-dir" value="$(@PACKAGE/install-includedir)" />
 
diff --git a/compat/zlib/trees.c b/compat/zlib/trees.c
index 357f313..50cf4b4 100644
--- a/compat/zlib/trees.c
+++ b/compat/zlib/trees.c
@@ -1,5 +1,5 @@
 /* trees.c -- output deflated data using Huffman coding
- * Copyright (C) 1995-2016 Jean-loup Gailly
+ * Copyright (C) 1995-2017 Jean-loup Gailly
  * detect_data_type() function provided freely by Cosmin Truta, 2006
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
@@ -906,7 +906,7 @@ void ZLIB_INTERNAL _tr_align(s)
 
 /* ===========================================================================
  * Determine the best encoding for the current block: dynamic trees, static
- * trees or store, and output the encoded block to the zip file.
+ * trees or store, and write out the encoded block.
  */
 void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
     deflate_state *s;
diff --git a/compat/zlib/win32/Makefile.msc b/compat/zlib/win32/Makefile.msc
index 67b7731..6831882 100644
--- a/compat/zlib/win32/Makefile.msc
+++ b/compat/zlib/win32/Makefile.msc
@@ -1,5 +1,5 @@
 # Makefile for zlib using Microsoft (Visual) C
-# zlib is copyright (C) 1995-2006 Jean-loup Gailly and Mark Adler
+# zlib is copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
 #
 # Usage:
 #   nmake -f win32/Makefile.msc                          (standard build)
diff --git a/compat/zlib/win32/README-WIN32.txt b/compat/zlib/win32/README-WIN32.txt
index 16adcca..df7ab7f 100644
--- a/compat/zlib/win32/README-WIN32.txt
+++ b/compat/zlib/win32/README-WIN32.txt
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY
 
-zlib 1.2.10 is a general purpose data compression library.  All the code is
+zlib 1.2.11 is a general purpose data compression library.  All the code is
 thread safe.  The data format used by the zlib library is described by RFCs
 (Request for Comments) 1950 to 1952 in the files
 http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
@@ -22,7 +22,7 @@ before asking for help.
 
 Manifest:
 
-The package zlib-1.2.10-win32-x86.zip will contain the following files:
+The package zlib-1.2.11-win32-x86.zip will contain the following files:
 
   README-WIN32.txt This document
   ChangeLog        Changes since previous zlib packages
@@ -72,7 +72,7 @@ are too numerous to cite here.
 
 Copyright notice:
 
-  (C) 1995-2012 Jean-loup Gailly and Mark Adler
+  (C) 1995-2017 Jean-loup Gailly and Mark Adler
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/compat/zlib/win32/README.txt b/compat/zlib/win32/README.txt
index de1d05a..bd3d18d 100644
--- a/compat/zlib/win32/README.txt
+++ b/compat/zlib/win32/README.txt
@@ -6,7 +6,7 @@ What's here
 

 Source

 ======

-  zlib version 1.2.10

+  zlib version 1.2.11

   available at http://www.gzip.org/zlib/

 

 

@@ -37,7 +37,7 @@ Build info
 

 Copyright notice

 ================

-  Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler

+  Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler

 

   This software is provided 'as-is', without any express or implied

   warranty.  In no event will the authors be held liable for any damages

diff --git a/compat/zlib/win32/USAGE.txt b/compat/zlib/win32/USAGE.txt
index 48e594e..22829eb 100644
--- a/compat/zlib/win32/USAGE.txt
+++ b/compat/zlib/win32/USAGE.txt
@@ -2,6 +2,9 @@
 Installing ZLIB1.DLL

 ====================

   Copy ZLIB1.DLL to the SYSTEM or the SYSTEM32 directory.

+  

+  If you want to install the 32-bit dll on a 64-bit

+  machine, use the SysWOW64 directory instead.

 

 

 Using ZLIB1.DLL with Microsoft Visual C++

@@ -20,12 +23,17 @@ Using ZLIB1.DLL with gcc/MinGW
    1. Install the supplied header files "zlib.h" and "zconf.h"

       into the INCLUDE directory.

 

-   2. Copy the supplied library file "zdll.lib" to "libzdll.a":

+   2. (32-bit): Copy the supplied library file "zdll.lib" to "libzdll.a":

         cp lib/zdll.lib lib/libzdll.a

 

       OR

 

-   2' Build the import library from the supplied "zlib.def":

+   2'. (64-bit): Copy the supplied library file "libz.dll.a" to "libzdll.a":

+        cp lib/libz.dll.a lib/libzdll.a

+

+      OR

+

+   2'' Build the import library from the supplied "zlib.def":

         dlltool -D zlib1.dll -d lib/zlib.def -l lib/libzdll.a

 

    3. Install "libzdll.a" into the LIB directory.

diff --git a/compat/zlib/win32/VisualC.txt b/compat/zlib/win32/VisualC.txt
index 579a5fc..1005b21 100644
--- a/compat/zlib/win32/VisualC.txt
+++ b/compat/zlib/win32/VisualC.txt
@@ -1,3 +1,3 @@
 
 To build zlib using the Microsoft Visual C++ environment,
-use the appropriate project from the projects/ directory.
+use the appropriate project from the contrib/vstudio/ directory.
diff --git a/compat/zlib/win32/zdll.lib b/compat/zlib/win32/zdll.lib
index 5807541..a3e9a39 100644..100755
--- a/compat/zlib/win32/zdll.lib
+++ b/compat/zlib/win32/zdll.lib
diff --git a/compat/zlib/win32/zlib1.rc b/compat/zlib/win32/zlib1.rc
index 5c0feed..234e641 100644
--- a/compat/zlib/win32/zlib1.rc
+++ b/compat/zlib/win32/zlib1.rc
@@ -26,7 +26,7 @@ BEGIN
       VALUE "FileDescription",	"zlib data compression library\0"
       VALUE "FileVersion",	ZLIB_VERSION "\0"
       VALUE "InternalName",	"zlib1.dll\0"
-      VALUE "LegalCopyright",	"(C) 1995-2013 Jean-loup Gailly & Mark Adler\0"
+      VALUE "LegalCopyright",	"(C) 1995-2017 Jean-loup Gailly & Mark Adler\0"
       VALUE "OriginalFilename",	"zlib1.dll\0"
       VALUE "ProductName",	"zlib\0"
       VALUE "ProductVersion",	ZLIB_VERSION "\0"
diff --git a/compat/zlib/win64/libz.dll.a b/compat/zlib/win64/libz.dll.a
index d90a90c..93be06e 100644
--- a/compat/zlib/win64/libz.dll.a
+++ b/compat/zlib/win64/libz.dll.a
diff --git a/compat/zlib/win64/zdll.lib b/compat/zlib/win64/zdll.lib
index db56951..c1be098 100644
--- a/compat/zlib/win64/zdll.lib
+++ b/compat/zlib/win64/zdll.lib
diff --git a/compat/zlib/win64/zlib1.dll b/compat/zlib/win64/zlib1.dll
index 86b6bbe..81195c3 100755
--- a/compat/zlib/win64/zlib1.dll
+++ b/compat/zlib/win64/zlib1.dll
diff --git a/compat/zlib/zlib.3 b/compat/zlib/zlib.3
index 00dc061..bda4eb0 100644
--- a/compat/zlib/zlib.3
+++ b/compat/zlib/zlib.3
@@ -1,4 +1,4 @@
-.TH ZLIB 3 "2 Jan 2017"
+.TH ZLIB 3 "15 Jan 2017"
 .SH NAME
 zlib \- compression/decompression library
 .SH SYNOPSIS
@@ -105,7 +105,7 @@ before asking for help.
 Send questions and/or comments to zlib@gzip.org,
 or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
 .SH AUTHORS AND LICENSE
-Version 1.2.10
+Version 1.2.11
 .LP
 Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
 .LP
diff --git a/compat/zlib/zlib.3.pdf b/compat/zlib/zlib.3.pdf
index 20008cd..6fa519c 100644
--- a/compat/zlib/zlib.3.pdf
+++ b/compat/zlib/zlib.3.pdf
diff --git a/compat/zlib/zlib.h b/compat/zlib/zlib.h
index dc90dc8..f09cdaf 100644
--- a/compat/zlib/zlib.h
+++ b/compat/zlib/zlib.h
@@ -1,5 +1,5 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.10, January 2nd, 2017
+  version 1.2.11, January 15th, 2017
 
   Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
 
@@ -37,11 +37,11 @@
 extern "C" {
 #endif
 
-#define ZLIB_VERSION "1.2.10"
-#define ZLIB_VERNUM 0x12a0
+#define ZLIB_VERSION "1.2.11"
+#define ZLIB_VERNUM 0x12b0
 #define ZLIB_VER_MAJOR 1
 #define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 10
+#define ZLIB_VER_REVISION 11
 #define ZLIB_VER_SUBREVISION 0
 
 /*
@@ -712,10 +712,11 @@ ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
    used to switch between compression and straight copy of the input data, or
    to switch to a different kind of input data requiring a different strategy.
    If the compression approach (which is a function of the level) or the
-   strategy is changed, then the input available so far is compressed with the
-   old level and strategy using deflate(strm, Z_BLOCK).  There are three
-   approaches for the compression levels 0, 1..3, and 4..9 respectively.  The
-   new level and strategy will take effect at the next call of deflate().
+   strategy is changed, and if any input has been consumed in a previous
+   deflate() call, then the input available so far is compressed with the old
+   level and strategy using deflate(strm, Z_BLOCK).  There are three approaches
+   for the compression levels 0, 1..3, and 4..9 respectively.  The new level
+   and strategy will take effect at the next call of deflate().
 
      If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does
    not have enough output space to complete, then the parameter change will not
diff --git a/compat/zlib/zutil.c b/compat/zlib/zutil.c
index 56534fb..a76c6b0 100644
--- a/compat/zlib/zutil.c
+++ b/compat/zlib/zutil.c
@@ -1,5 +1,5 @@
 /* zutil.c -- target dependent utility functions for the compression library
- * Copyright (C) 1995-2005, 2010, 2011, 2012, 2016 Jean-loup Gailly
+ * Copyright (C) 1995-2017 Jean-loup Gailly
  * For conditions of distribution and use, see copyright notice in zlib.h
  */