diff --git a/ChangeLog b/ChangeLog
index 9817f59..33a740d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,23 @@
 
                 ChangeLog file for zlib
 
+Changes in 1.2.4.2 (9 Apr 2010)
+- Add consistent carriage returns to readme.txt's in masmx86 and masmx64
+- Really provide prototypes for *64 functions when building without LFS
+- Only define unlink() in minigzip.c if unistd.h not included
+- Update README to point to contrib/vstudio project files
+- Move projects/vc6 to old/ and remove projects/
+- Include stdlib.h in minigzip.c for setmode() definition under WinCE
+- Clean up assembler builds in win32/Makefile.msc [Rowe]
+- Include sys/types.h for Microsoft for off_t definition
+- Fix memory leak on error in gz_open()
+- Symbolize nm as $NM in configure [Weigelt]
+- Use TEST_LDSHARED instead of LDSHARED to link test programs [Weigelt]
+- Add +0 to _FILE_OFFSET_BITS and _LFS64_LARGEFILE in case not defined
+- Fix bug in gzeof() to take into account unused input data
+- Avoid initialization of structures with variables in puff.c
+- Updated win32/README-WIN32.txt [Rowe]
+
 Changes in 1.2.4.1 (28 Mar 2010)
 - Remove the use of [a-z] constructs for sed in configure [gentoo 310225]
 - Remove $(SHAREDLIB) from LIBS in Makefile.in [Creech]
diff --git a/INDEX b/INDEX
index f66bf9b..f6c51ca 100644
--- a/INDEX
+++ b/INDEX
@@ -22,7 +22,6 @@
 nintendods/     makefile for Nintendo DS
 old/            makefiles for various architectures and zlib documentation
                 files that have not yet been updated for zlib 1.2.x
-projects/       projects for various Integrated Development Environments
 qnx/            makefiles for QNX
 watcom/         makefiles for OpenWatcom
 win32/          makefiles for Windows
diff --git a/Makefile.in b/Makefile.in
index a79f739..e5bc2a3 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -26,13 +26,13 @@
 
 SFLAGS=-O
 
-LDFLAGS=-L. libz.a
+TEST_LDFLAGS=-L. libz.a
 LDSHARED=$(CC)
 CPP=$(CC) -E
 
 STATICLIB=libz.a
 SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.4.1
+SHAREDLIBV=libz.so.1.2.4.2
 SHAREDLIBM=libz.so.1
 LIBS=$(STATICLIB) $(SHAREDLIBV)
 
@@ -136,17 +136,17 @@
 	-@mv objs/$*.o $@
 
 $(SHAREDLIBV): $(PIC_OBJS)
-	$(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC)
+	$(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS)
 	rm -f $(SHAREDLIB) $(SHAREDLIBM)
 	ln -s $@ $(SHAREDLIB)
 	ln -s $@ $(SHAREDLIBM)
 	-@rmdir objs
 
 example$(EXE): example.o $(STATICLIB)
-	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)
+	$(CC) $(CFLAGS) -o $@ example.o $(TEST_LDFLAGS)
 
 minigzip$(EXE): minigzip.o $(STATICLIB)
-	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)
+	$(CC) $(CFLAGS) -o $@ minigzip.o $(TEST_LDFLAGS)
 
 examplesh$(EXE): example.o $(SHAREDLIBV)
 	$(CC) $(CFLAGS) -o $@ example.o -L. $(SHAREDLIBV)
@@ -155,10 +155,10 @@
 	$(CC) $(CFLAGS) -o $@ minigzip.o -L. $(SHAREDLIBV)
 
 example64$(EXE): example64.o $(STATICLIB)
-	$(CC) $(CFLAGS) -o $@ example64.o $(LDFLAGS)
+	$(CC) $(CFLAGS) -o $@ example64.o $(TEST_LDFLAGS)
 
 minigzip64$(EXE): minigzip64.o $(STATICLIB)
-	$(CC) $(CFLAGS) -o $@ minigzip64.o $(LDFLAGS)
+	$(CC) $(CFLAGS) -o $@ minigzip64.o $(TEST_LDFLAGS)
 
 install-libs: $(LIBS)
 	-@if [ ! -d $(DESTDIR)$(exec_prefix)  ]; then mkdir -p $(DESTDIR)$(exec_prefix); fi
diff --git a/README b/README
index a330267..3c4f36e 100644
--- a/README
+++ b/README
@@ -1,6 +1,6 @@
 ZLIB DATA COMPRESSION LIBRARY
 
-zlib 1.2.4.1 is a general purpose data compression library.  All the code is
+zlib 1.2.4.2 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)
@@ -16,7 +16,8 @@
 To compile all files and run the test program, follow the instructions given at
 the top of Makefile.in.  In short "./configure; make test", and if that goes
 well, "make install" should work for most flavors of Unix.  For Windows, use one
-of the special makefiles in win32/ or projects/ .  For VMS, use make_vms.com.
+of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
+make_vms.com.
 
 Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
 <info@winimage.com> for the Windows DLL version.  The zlib home page is
@@ -30,7 +31,7 @@
 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 1.2.4.1 are documented in the file ChangeLog.
+The changes made in version 1.2.4.2 are documented in the file ChangeLog.
 
 Unsupported third party contributions are provided in directory contrib/ .
 
diff --git a/configure b/configure
index 8a36129..577cba7 100755
--- a/configure
+++ b/configure
@@ -45,6 +45,7 @@
 AR=${AR-"${CROSS_PREFIX}ar"}
 AR_RC="${AR} rc"
 RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
+NM=${NM-"nm"}
 LDCONFIG=${LDCONFIG-"ldconfig"}
 LDSHAREDLIBC="${LDSHAREDLIBC-"-lc"}"
 prefix=${prefix-/usr/local}
@@ -505,7 +506,7 @@
 CPP=${CPP-"$CC -E"}
 case $CFLAGS in
   *ASMV*)
-    if test "`nm $test.o | grep _hello`" = ""; then
+    if test "`$NM $test.o | grep _hello`" = ""; then
       CPP="$CPP -DNO_UNDERLINE"
       echo Checking for underline in external names... No.
     else
diff --git a/contrib/delphi/ZLib.pas b/contrib/delphi/ZLib.pas
index 03450e7..72ef99f 100644
--- a/contrib/delphi/ZLib.pas
+++ b/contrib/delphi/ZLib.pas
@@ -152,7 +152,7 @@
   const OutBuf: Pointer; BufSize: Integer);
 
 const
-  zlib_version = '1.2.4.1';
+  zlib_version = '1.2.4.2';
 
 type
   EZlibError = class(Exception);
diff --git a/contrib/dotzlib/DotZLib/UnitTests.cs b/contrib/dotzlib/DotZLib/UnitTests.cs
index 82c749e..6cfdaa7 100644
--- a/contrib/dotzlib/DotZLib/UnitTests.cs
+++ b/contrib/dotzlib/DotZLib/UnitTests.cs
@@ -156,7 +156,7 @@
         public void Info_Version()
         {
             Info info = new Info();
-            Assert.AreEqual("1.2.4.1", Info.Version);
+            Assert.AreEqual("1.2.4.2", Info.Version);
             Assert.AreEqual(32, info.SizeOfUInt);
             Assert.AreEqual(32, info.SizeOfULong);
             Assert.AreEqual(32, info.SizeOfPointer);
diff --git a/contrib/infback9/inftree9.c b/contrib/infback9/inftree9.c
index e898893..362008c 100644
--- a/contrib/infback9/inftree9.c
+++ b/contrib/infback9/inftree9.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate9_copyright[] =
-   " inflate9 1.2.4.1 Copyright 1995-2010 Mark Adler ";
+   " inflate9 1.2.4.2 Copyright 1995-2010 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 @@
     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, 67, 206};
+        133, 133, 133, 133, 144, 202, 75};
     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/contrib/masmx64/readme.txt b/contrib/masmx64/readme.txt
index 1115d9b..2da6733 100644
--- a/contrib/masmx64/readme.txt
+++ b/contrib/masmx64/readme.txt
@@ -12,10 +12,10 @@
 
 Use instructions
 ----------------
-Assemble the .asm files using MASM and put the object files into the zlib source
-directory.  You can also get object files here:
-
-     http://www.winimage.com/zLibDll/zlib124_masm_obj.zip
+Assemble the .asm files using MASM and put the object files into the zlib source
+directory.  You can also get object files here:
+
+     http://www.winimage.com/zLibDll/zlib124_masm_obj.zip
 
 define ASMV and ASMINF in your project. Include inffas8664.c in your source tree,
 and inffasx64.obj and gvmat64.obj as object to link.
diff --git a/contrib/masmx86/readme.txt b/contrib/masmx86/readme.txt
index 90230f2..3271f72 100644
--- a/contrib/masmx86/readme.txt
+++ b/contrib/masmx86/readme.txt
@@ -1,27 +1,27 @@
-
-Summary
--------
-This directory contains ASM implementations of the functions
-longest_match() and inflate_fast().
-
-
-Use instructions
-----------------
-Assemble using MASM, and copy the object files into the zlib source
-directory, then run the appropriate makefile, as suggested below.  You can
-donwload MASM from here:
-
+
+Summary
+-------
+This directory contains ASM implementations of the functions
+longest_match() and inflate_fast().
+
+
+Use instructions
+----------------
+Assemble using MASM, and copy the object files into the zlib source
+directory, then run the appropriate makefile, as suggested below.  You can
+donwload MASM from here:
+
     http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=7a1c9da0-0510-44a2-b042-7ef370530c64
-
-You can also get objects files here:
-
-    http://www.winimage.com/zLibDll/zlib124_masm_obj.zip
-
-Build instructions
-------------------
-* With Microsoft C and MASM:
-nmake -f win32/Makefile.msc LOC="-DASMV -DASMINF" OBJA="match686.obj inffas32.obj"
-
-* With Borland C and TASM:
-make -f win32/Makefile.bor LOCAL_ZLIB="-DASMV -DASMINF" OBJA="match686.obj inffas32.obj" OBJPA="+match686c.obj+match686.obj+inffas32.obj"
-
+
+You can also get objects files here:
+
+    http://www.winimage.com/zLibDll/zlib124_masm_obj.zip
+
+Build instructions
+------------------
+* With Microsoft C and MASM:
+nmake -f win32/Makefile.msc LOC="-DASMV -DASMINF" OBJA="match686.obj inffas32.obj"
+
+* With Borland C and TASM:
+make -f win32/Makefile.bor LOCAL_ZLIB="-DASMV -DASMINF" OBJA="match686.obj inffas32.obj" OBJPA="+match686c.obj+match686.obj+inffas32.obj"
+
diff --git a/contrib/pascal/zlibpas.pas b/contrib/pascal/zlibpas.pas
index 9772f11..e0bc74b 100644
--- a/contrib/pascal/zlibpas.pas
+++ b/contrib/pascal/zlibpas.pas
@@ -10,7 +10,7 @@
 interface
 
 const
-  ZLIB_VERSION = '1.2.4.1';
+  ZLIB_VERSION = '1.2.4.2';
 
 type
   alloc_func = function(opaque: Pointer; items, size: Integer): Pointer;
diff --git a/contrib/puff/puff.c b/contrib/puff/puff.c
index df5b79f..650694e 100644
--- a/contrib/puff/puff.c
+++ b/contrib/puff/puff.c
@@ -1,8 +1,8 @@
 /*
  * puff.c
- * Copyright (C) 2002-2008 Mark Adler
+ * Copyright (C) 2002-2010 Mark Adler
  * For conditions of distribution and use, see copyright notice in puff.h
- * version 2.0, 25 Jul 2008
+ * version 2.1, 4 Apr 2010
  *
  * puff.c is a simple inflate written to be an unambiguous way to specify the
  * deflate format.  It is not written for speed but rather simplicity.  As a
@@ -67,6 +67,8 @@
  *                      - Add option in TEST code for puff to write the data
  *                      - Add option in TEST code to skip input bytes
  *                      - Allow TEST code to read from piped stdin
+ * 2.1   4 Apr 2010     - Avoid variable initialization for happier compilers
+ *                      - Avoid unsigned comparisons for even happier compilers
  */
 
 #include <setjmp.h>             /* for setjmp(), longjmp(), and jmp_buf */
@@ -516,8 +518,7 @@
     static int virgin = 1;
     static short lencnt[MAXBITS+1], lensym[FIXLCODES];
     static short distcnt[MAXBITS+1], distsym[MAXDCODES];
-    static struct huffman lencode = {lencnt, lensym};
-    static struct huffman distcode = {distcnt, distsym};
+    static struct huffman lencode, distcode;
 
     /* build fixed huffman tables if first call (may not be thread safe) */
     if (virgin) {
@@ -540,6 +541,12 @@
             lengths[symbol] = 5;
         construct(&distcode, lengths, MAXDCODES);
 
+        /* construct lencode and distcode */
+        lencode.count = lencnt;
+        lencode.symbol = lensym;
+        distcode.count = distcnt;
+        distcode.symbol = distsym;
+
         /* do this just once */
         virgin = 0;
     }
@@ -643,11 +650,16 @@
     short lengths[MAXCODES];            /* descriptor code lengths */
     short lencnt[MAXBITS+1], lensym[MAXLCODES];         /* lencode memory */
     short distcnt[MAXBITS+1], distsym[MAXDCODES];       /* distcode memory */
-    struct huffman lencode = {lencnt, lensym};          /* length code */
-    struct huffman distcode = {distcnt, distsym};       /* distance code */
+    struct huffman lencode, distcode;   /* length and distance codes */
     static const short order[19] =      /* permutation of code length codes */
         {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
 
+    /* construct lencode and distcode */
+    lencode.count = lencnt;
+    lencode.symbol = lensym;
+    distcode.count = distcnt;
+    distcode.symbol = distsym;
+
     /* get number of lengths in each table, check lengths */
     nlen = bits(s, 5) + 257;
     ndist = bits(s, 5) + 1;
@@ -869,7 +881,8 @@
 
 int main(int argc, char **argv)
 {
-    int ret, skip = 0, put = 0;
+    int ret, put = 0;
+    unsigned skip = 0;
     char *arg, *name = NULL;
     unsigned char *source = NULL, *dest;
     size_t len = 0;
@@ -881,7 +894,7 @@
             if (arg[1] == 'w' && arg[2] == 0)
                 put = 1;
             else if (arg[1] >= '0' && arg[1] <= '9')
-                skip = atoi(arg + 1);
+                skip = (unsigned)atoi(arg + 1);
             else {
                 fprintf(stderr, "invalid option %s\n", arg);
                 return 3;
diff --git a/contrib/puff/puff.h b/contrib/puff/puff.h
index 8d7f5f8..88d1b38 100644
--- a/contrib/puff/puff.h
+++ b/contrib/puff/puff.h
@@ -1,6 +1,6 @@
 /* puff.h
-  Copyright (C) 2002-2008 Mark Adler, all rights reserved
-  version 1.9, 10 Jan 2008
+  Copyright (C) 2002-2010 Mark Adler, all rights reserved
+  version 2.1, 4 Apr 2010
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the author be held liable for any damages
diff --git a/contrib/vstudio/vc10/zlib.rc b/contrib/vstudio/vc10/zlib.rc
index d6b9991..38615f0 100644
--- a/contrib/vstudio/vc10/zlib.rc
+++ b/contrib/vstudio/vc10/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1,2,4,1
-  PRODUCTVERSION 1,2,4,1
+  FILEVERSION	 1,2,4,2
+  PRODUCTVERSION 1,2,4,2
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.4.1\0"
+      VALUE "FileVersion",	"1.2.4.2\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlib.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/contrib/vstudio/vc9/zlib.rc b/contrib/vstudio/vc9/zlib.rc
index d6b9991..38615f0 100644
--- a/contrib/vstudio/vc9/zlib.rc
+++ b/contrib/vstudio/vc9/zlib.rc
@@ -2,8 +2,8 @@
 
 #define IDR_VERSION1  1
 IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
-  FILEVERSION	 1,2,4,1
-  PRODUCTVERSION 1,2,4,1
+  FILEVERSION	 1,2,4,2
+  PRODUCTVERSION 1,2,4,2
   FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
   FILEFLAGS	0
   FILEOS	VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@
 
     BEGIN
       VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
-      VALUE "FileVersion",	"1.2.4.1\0"
+      VALUE "FileVersion",	"1.2.4.2\0"
       VALUE "InternalName",	"zlib\0"
       VALUE "OriginalFilename",	"zlib.dll\0"
       VALUE "ProductName",	"ZLib.DLL\0"
diff --git a/deflate.c b/deflate.c
index b7fb9fc..7025528 100644
--- a/deflate.c
+++ b/deflate.c
@@ -52,7 +52,7 @@
 #include "deflate.h"
 
 const char deflate_copyright[] =
-   " deflate 1.2.4.1 Copyright 1995-2010 Jean-loup Gailly and Mark Adler ";
+   " deflate 1.2.4.2 Copyright 1995-2010 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
diff --git a/gzguts.h b/gzguts.h
index 53857e0..a0e7119 100644
--- a/gzguts.h
+++ b/gzguts.h
@@ -3,7 +3,7 @@
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
-#if _LARGEFILE64_SOURCE == 1
+#if _LARGEFILE64_SOURCE
 #  ifndef _LARGEFILE_SOURCE
 #    define _LARGEFILE_SOURCE 1
 #  endif
@@ -56,12 +56,20 @@
 #  endif
 #endif
 
-#if _LARGEFILE64_SOURCE == 1
+#if _LARGEFILE64_SOURCE
 #  define z_off64_t off64_t
 #else
 #  define z_off64_t z_off_t
 #endif
 
+/* provide prototypes for these when building zlib without LFS */
+#if _LARGEFILE64_SOURCE+0 != 1 || _LFS64_LARGEFILE+0 != 1
+    ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
+    ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, off_t, int));
+    ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
+    ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
+#endif
+
 /* default i/o buffer size -- double this for output when reading */
 #define GZBUFSIZE 8192
 
diff --git a/gzlib.c b/gzlib.c
index 15999ae..d1b6253 100644
--- a/gzlib.c
+++ b/gzlib.c
@@ -5,7 +5,7 @@
 
 #include "gzguts.h"
 
-#if _LARGEFILE64_SOURCE == 1 && _LFS64_LARGEFILE == 1
+#if _LARGEFILE64_SOURCE && _LFS64_LARGEFILE
 #  define LSEEK lseek64
 #else
 #  define LSEEK lseek
@@ -172,6 +172,7 @@
                         O_APPEND))),
             0666);
     if (state->fd == -1) {
+        free(state->path);
         free(state);
         return NULL;
     }
@@ -432,7 +433,8 @@
         return 0;
 
     /* return end-of-file state */
-    return state->mode == GZ_READ ? (state->eof && state->have == 0) : 0;
+    return state->mode == GZ_READ ?
+        (state->eof && state->strm.avail_in == 0 && state->have == 0) : 0;
 }
 
 /* -- see zlib.h -- */
diff --git a/inftrees.c b/inftrees.c
index 90de8b8..1ea90f7 100644
--- a/inftrees.c
+++ b/inftrees.c
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate_copyright[] =
-   " inflate 1.2.4.1 Copyright 1995-2010 Mark Adler ";
+   " inflate 1.2.4.2 Copyright 1995-2010 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 @@
         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, 67, 206};
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 202, 75};
     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/minigzip.c b/minigzip.c
index 9677fa0..f43cb54 100644
--- a/minigzip.c
+++ b/minigzip.c
@@ -32,6 +32,9 @@
 #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
 #  include <fcntl.h>
 #  include <io.h>
+#  ifdef UNDER_CE
+#    include <stdlib.h>
+#  endif
 #  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
 #else
 #  define SET_BINARY_MODE(file)
@@ -50,9 +53,11 @@
 #  include <unix.h> /* for fileno */
 #endif
 
+#if !defined(Z_HAVE_UNISTD_H) && _LARGEFILE64_SOURCE+0 != 1
 #ifndef WIN32 /* unlink already in stdio.h for WIN32 */
   extern int unlink OF((const char *));
 #endif
+#endif
 
 #if defined(UNDER_CE)
 #  include <windows.h>
diff --git a/projects/visualc6/README.txt b/old/visualc6/README.txt
similarity index 100%
rename from projects/visualc6/README.txt
rename to old/visualc6/README.txt
diff --git a/projects/visualc6/example.dsp b/old/visualc6/example.dsp
similarity index 100%
rename from projects/visualc6/example.dsp
rename to old/visualc6/example.dsp
diff --git a/projects/visualc6/minigzip.dsp b/old/visualc6/minigzip.dsp
similarity index 100%
rename from projects/visualc6/minigzip.dsp
rename to old/visualc6/minigzip.dsp
diff --git a/projects/visualc6/zlib.dsp b/old/visualc6/zlib.dsp
similarity index 100%
rename from projects/visualc6/zlib.dsp
rename to old/visualc6/zlib.dsp
diff --git a/projects/visualc6/zlib.dsw b/old/visualc6/zlib.dsw
similarity index 100%
rename from projects/visualc6/zlib.dsw
rename to old/visualc6/zlib.dsw
diff --git a/projects/README.projects b/projects/README.projects
deleted file mode 100644
index 1c029e4..0000000
--- a/projects/README.projects
+++ /dev/null
@@ -1,41 +0,0 @@
-This directory contains project files for building zlib under various
-Integrated Development Environments (IDE).
-
-If you wish to submit a new project to this directory, you should comply
-to the following requirements.  Otherwise (e.g. if you wish to integrate
-a custom piece of code that changes the zlib interface or its behavior),
-please consider submitting the project to the contrib directory.
-
-
-Requirements
-============
-
-- The project must build zlib using the source files from the official
-  zlib source distribution, exclusively.
-
-- If the project produces redistributable builds (e.g. shared objects
-  or DLL files), these builds must be compatible to those produced by
-  makefiles, if such makefiles exist in the zlib distribution.
-  In particular, if the project produces a DLL build for the Win32
-  platform, this build must comply to the officially-ammended Win32 DLL
-  Application Binary Interface (ABI), described in win32/DLL_FAQ.txt.
-
-- The project may provide additional build targets, which depend on
-  3rd-party (unofficially-supported) software, present in the contrib
-  directory.  For example, it is possible to provide an "ASM build",
-  besides the officially-supported build, and have ASM source files
-  among its dependencies.
-
-- If there are significant differences between the project files created
-  by different versions of an IDE (e.g. Visual C++ 6.0 vs. 7.0), the name
-  of the project directory should contain the version number of the IDE
-  for which the project is intended (e.g. "visualc6" for Visual C++ 6.0,
-  or "visualc7" for Visual C++ 7.0 and 7.1).
-
-
-Current projects
-================
-
-visualc6/   by Simon-Pierre Cadieux <methodex@methodex.ca>
-            and Cosmin Truta <cosmint@cs.ubbcluj.ro>
-        Project for Microsoft Visual C++ 6.0
diff --git a/qnx/package.qpg b/qnx/package.qpg
index bf3433a..99d3701 100644
--- a/qnx/package.qpg
+++ b/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.1.2.4.1" install="/opt/lib/" user="root:bin" permission="644"/>
-         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.4.1"/>
-         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.4.1"/>
-         <QPG:Add file="../libz.so.1.2.4.1" install="/opt/lib/" component="slib"/>
+         <QPG:Add file="../libz.so.1.2.4.2" install="/opt/lib/" user="root:bin" permission="644"/>
+         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.2.4.2"/>
+         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.2.4.2"/>
+         <QPG:Add file="../libz.so.1.2.4.2" install="/opt/lib/" component="slib"/>
       </QPG:Files>
 
       <QPG:PackageFilter>
@@ -63,7 +63,7 @@
             </QPM:ProductDescription>
 
             <QPM:ReleaseDescription>
-               <QPM:ReleaseVersion>1.2.4.1</QPM:ReleaseVersion>
+               <QPM:ReleaseVersion>1.2.4.2</QPM:ReleaseVersion>
                <QPM:ReleaseUrgency>Medium</QPM:ReleaseUrgency>
                <QPM:ReleaseStability>Stable</QPM:ReleaseStability>
                <QPM:ReleaseNoteMinor></QPM:ReleaseNoteMinor>
diff --git a/treebuild.xml b/treebuild.xml
index e30532e..d2c6a25 100644
--- a/treebuild.xml
+++ b/treebuild.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" ?>
-<package name="zlib" version="1.2.4.1">
-    <library name="zlib" dlversion="1.2.4.1" dlname="z">
+<package name="zlib" version="1.2.4.2">
+    <library name="zlib" dlversion="1.2.4.2" dlname="z">
 	<property name="description"> zip compression library </property>
 	<property name="include-target-dir" value="$(@PACKAGE/install-includedir)" />
 
diff --git a/win32/Makefile.msc b/win32/Makefile.msc
index a731c0c..fa10a1a 100644
--- a/win32/Makefile.msc
+++ b/win32/Makefile.msc
@@ -2,15 +2,16 @@
 # zlib is copyright (C) 1995-2006 Jean-loup Gailly and Mark Adler
 #
 # Usage:
-#   nmake -f win32/Makefile.msc            (standard build)
-#   nmake -f win32/Makefile.msc LOC=-DFOO  (nonstandard build)
-#   nmake -f win32/Makefile.msc LOC=-DASMV OBJA=match.obj  (use ASM code)
-
+#   nmake -f win32/Makefile.msc                          (standard build)
+#   nmake -f win32/Makefile.msc LOC=-DFOO                (nonstandard build)
+#   nmake -f win32/Makefile.msc LOC="-DASMV -DASMINF" \
+#         OBJA="inffas32.obj match686.obj"               (use ASM code, x86)
+#   nmake -f win32/Makefile.msc AS=ml64 LOC="-DASMV -DASMINF" \
+#         OBJA="inffasx64.obj gvmat64.obj inffas8664.c"  (use ASM code, x64)
 
 # optional build flags
 LOC =
 
-
 # variables
 STATICLIB = zlib.lib
 SHAREDLIB = zlib1.dll
@@ -23,13 +24,13 @@
 RC = rc
 CFLAGS  = -nologo -MD -W3 -O2 -Oy- -Zi -Fd"zlib" $(LOC)
 WFLAGS  = -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE
-ASFLAGS = -coff -Zi
+ASFLAGS = -coff -Zi $(LOC)
 LDFLAGS = -nologo -debug -incremental:no -opt:ref
 ARFLAGS = -nologo
 RCFLAGS = /dWIN32 /r
 
 OBJS = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj \
-       gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
+       gzwrite.obj infback.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
 OBJA =
 
 
@@ -71,7 +72,13 @@
 .c.obj:
 	$(CC) -c $(WFLAGS) $(CFLAGS) $<
 
-.asm.obj:
+{contrib/masmx64}.c.obj:
+	$(CC) -c $(WFLAGS) $(CFLAGS) $<
+
+{contrib/masmx64}.asm.obj:
+	$(AS) -c $(ASFLAGS) $<
+
+{contrib/masmx86}.asm.obj:
 	$(AS) -c $(ASFLAGS) $<
 
 adler32.obj: adler32.c zlib.h zconf.h
@@ -107,6 +114,17 @@
 
 zutil.obj: zutil.c zutil.h zlib.h zconf.h
 
+gvmat64.obj: contrib\masmx64\gvmat64.asm
+
+inffasx64.obj: contrib\masmx64\inffasx64.asm
+
+inffas8664.obj: contrib\masmx64\inffas8664.c zutil.h zlib.h zconf.h \
+		inftrees.h inflate.h inffast.h
+
+inffas32.obj: contrib\masmx86\inffas32.asm
+
+match686.obj: contrib\masmx86\match686.asm
+
 example.obj: example.c zlib.h zconf.h
 
 minigzip.obj: minigzip.c zlib.h zconf.h
diff --git a/win32/README-WIN32.txt b/win32/README-WIN32.txt
index 35062cd..1e4c093 100644
--- a/win32/README-WIN32.txt
+++ b/win32/README-WIN32.txt
@@ -47,9 +47,9 @@
   zdll.lib         Install these files into the compilers' LIB path if linking
   zdll.exp         a compiled program to the zlib1.dll binary
 
-  zlib.lib         Install these files into the compilers' LIB path if linking
-  zlib.pdb         a compiled program to the zlib1.dll binary (zlib.pdb ensures
-                   that the resulting program may be debugged)
+  zlib.lib         Install these files into the compilers' LIB path to link zlib
+  zlib.pdb         into compiled programs, without zlib1.dll runtime dependency
+                   (zlib.pdb provides debugging info to the compile time linker)
 
   zlib1.dll        Install this binary shared library into the system PATH, or
                    the program's runtime directory (where the .exe resides)
diff --git a/zconf.h b/zconf.h
index 6ad8a04..d3eaf91 100644
--- a/zconf.h
+++ b/zconf.h
@@ -364,8 +364,11 @@
 #  define Z_HAVE_UNISTD_H
 #endif
 
-#if defined(Z_HAVE_UNISTD_H) || _LARGEFILE64_SOURCE == 1
+#ifdef STDC
 #  include <sys/types.h>    /* for off_t */
+#endif
+
+#if defined(Z_HAVE_UNISTD_H) || _LARGEFILE64_SOURCE
 #  include <unistd.h>       /* for SEEK_* and off_t */
 #  ifdef VMS
 #    include <unixio.h>     /* for off_t */
diff --git a/zconf.h.cmakein b/zconf.h.cmakein
index fcd5710..bbe25a7 100644
--- a/zconf.h.cmakein
+++ b/zconf.h.cmakein
@@ -366,8 +366,11 @@
 #  define Z_HAVE_UNISTD_H
 #endif
 
-#if defined(Z_HAVE_UNISTD_H) || _LARGEFILE64_SOURCE == 1
+#ifdef STDC
 #  include <sys/types.h>    /* for off_t */
+#endif
+
+#if defined(Z_HAVE_UNISTD_H) || _LARGEFILE64_SOURCE
 #  include <unistd.h>       /* for SEEK_* and off_t */
 #  ifdef VMS
 #    include <unixio.h>     /* for off_t */
diff --git a/zconf.h.in b/zconf.h.in
index 6ad8a04..d3eaf91 100644
--- a/zconf.h.in
+++ b/zconf.h.in
@@ -364,8 +364,11 @@
 #  define Z_HAVE_UNISTD_H
 #endif
 
-#if defined(Z_HAVE_UNISTD_H) || _LARGEFILE64_SOURCE == 1
+#ifdef STDC
 #  include <sys/types.h>    /* for off_t */
+#endif
+
+#if defined(Z_HAVE_UNISTD_H) || _LARGEFILE64_SOURCE
 #  include <unistd.h>       /* for SEEK_* and off_t */
 #  ifdef VMS
 #    include <unixio.h>     /* for off_t */
diff --git a/zlib.3 b/zlib.3
index 2c1679d..552318d 100644
--- a/zlib.3
+++ b/zlib.3
@@ -1,4 +1,4 @@
-.TH ZLIB 3 "28 Mar 2010"
+.TH ZLIB 3 "9 Apr 2010"
 .SH NAME
 zlib \- compression/decompression library
 .SH SYNOPSIS
@@ -125,7 +125,7 @@
 Send questions and/or comments to zlib@gzip.org,
 or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
 .SH AUTHORS
-Version 1.2.4.1
+Version 1.2.4.2
 Copyright (C) 1995-2010 Jean-loup Gailly (jloup@gzip.org)
 and Mark Adler (madler@alumni.caltech.edu).
 .LP
diff --git a/zlib.3.pdf b/zlib.3.pdf
index 0d63b20..abbbb7f 100644
--- a/zlib.3.pdf
+++ b/zlib.3.pdf
Binary files differ
diff --git a/zlib.h b/zlib.h
index 1fcf630..25535f9 100644
--- a/zlib.h
+++ b/zlib.h
@@ -1,5 +1,5 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.4.1, March 28th, 2010
+  version 1.2.4.2, April 9th, 2010
 
   Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
 
@@ -37,12 +37,12 @@
 extern "C" {
 #endif
 
-#define ZLIB_VERSION "1.2.4.1"
+#define ZLIB_VERSION "1.2.4.2"
 #define ZLIB_VERNUM 0x1241
 #define ZLIB_VER_MAJOR 1
 #define ZLIB_VER_MINOR 2
 #define ZLIB_VER_REVISION 4
-#define ZLIB_VER_SUBREVISION 1
+#define ZLIB_VER_SUBREVISION 2
 
 /*
     The 'zlib' compression library provides in-memory compression and
@@ -1556,7 +1556,7 @@
         inflateBackInit_((strm), (windowBits), (window), \
                                             ZLIB_VERSION, sizeof(z_stream))
 
-#if _LARGEFILE64_SOURCE == 1 && _LFS64_LARGEFILE == 1
+#if _LARGEFILE64_SOURCE && _LFS64_LARGEFILE
    ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
    ZEXTERN off64_t ZEXPORT gzseek64 OF((gzFile, off64_t, int));
    ZEXTERN off64_t ZEXPORT gztell64 OF((gzFile));
@@ -1565,14 +1565,14 @@
    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, off64_t));
 #endif
 
-#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS == 64 && _LFS64_LARGEFILE == 1
+#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS+0 == 64 && _LFS64_LARGEFILE
 #  define gzopen gzopen64
 #  define gzseek gzseek64
 #  define gztell gztell64
 #  define gzoffset gzoffset64
 #  define adler32_combine adler32_combine64
 #  define crc32_combine crc32_combine64
-#  if _LARGEFILE64_SOURCE != 1
+#  if _LARGEFILE64_SOURCE
      ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
      ZEXTERN off_t ZEXPORT gzseek64 OF((gzFile, off_t, int));
      ZEXTERN off_t ZEXPORT gztell64 OF((gzFile));
diff --git a/zutil.h b/zutil.h
index b21a19c..850f1ec 100644
--- a/zutil.h
+++ b/zutil.h
@@ -154,20 +154,16 @@
   #pragma warn -8066
 #endif
 
-#if _LARGEFILE64_SOURCE == 1 && _LFS64_LARGEFILE == 1
+#if _LARGEFILE64_SOURCE && _LFS64_LARGEFILE
 #  define z_off64_t off64_t
 #else
 #  define z_off64_t z_off_t
 #endif
 
 /* provide prototypes for these when building zlib without LFS */
-#if _LARGEFILE64_SOURCE != 1 || _LFS64_LARGEFILE != 1
-    ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
-    ZEXTERN off_t ZEXPORT gzseek64 OF((gzFile, off_t, int));
-    ZEXTERN off_t ZEXPORT gztell64 OF((gzFile));
-    ZEXTERN off_t ZEXPORT gzoffset64 OF((gzFile));
-    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, off_t));
-    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, off_t));
+#if _LARGEFILE64_SOURCE+0 != 1 || _LFS64_LARGEFILE+0 != 1
+    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
+    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
 #endif
 
         /* common defaults */