Imported from libpng-1.0.6e.tar

ANNOUNCE

@@ -1,12 +1,12 @@
 
-Libpng 1.0.6d - April 7, 2000
+Libpng 1.0.6e - April 10, 2000
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
 
 Changes since the last public release (1.0.6):
 
-version 1.0.6d [April 7, 2000]
+version 1.0.6d [April 8, 2000]
   Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO
   Added data_length parameter to png_decompress_chunk() function
   Revised documentation to remove reference to abandoned png_free_chnk functions
@@ -15,6 +15,22 @@ version 1.0.6d [April 7, 2000]
   Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file
   Added a check for info_ptr->free_me&PNG_FREE_TEXT when free'ing text in png.c
   Simplify png_sig_bytes() function to remove use of non-ISO-C strdup().
+version 1.0.6e [April 10, 2000]
+  Added png_data_freer() function.
+  In the code that checks for over-length tRNS chunks, added check of
+    info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann)
+  Minor revisions of libpng.txt/libpng.3.
+  Check for existing data and free it if the free_me flag is set, in png_set_*()
+    and png_handle_*().
+  Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED
+    is defined.
+  Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c
+    and mentioned the purposes of the two macros in libpng.txt/libpng.3.
+
+Send comments/corrections/commendations to
+png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
+
+Glenn R-P
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

CHANGES

@@ -669,6 +669,17 @@ version 1.0.6d [April 7, 2000]
   Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file
   Added a check for info_ptr->free_me&PNG_FREE_TEXT when free'ing text in png.c
   Simplify png_sig_bytes() function to remove use of non-ISO-C strdup().
+version 1.0.6e [April 10, 2000]
+  Added png_data_freer() function.
+  In the code that checks for over-length tRNS chunks, added check of
+    info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann)
+  Minor revisions of libpng.txt/libpng.3.
+  Check for existing data and free it if the free_me flag is set, in png_set_*()
+    and png_handle_*().
+  Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED
+    is defined.
+  Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c
+    and mentioned the purposes of the two macros in libpng.txt/libpng.3.
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

INSTALL

@@ -1,5 +1,5 @@
 
-Installing libpng version 1.0.6d - April 7, 2000
+Installing libpng version 1.0.6e - April 10, 2000
 
 Before installing libpng, you must first install zlib.  zlib
 can usually be found wherever you got libpng.  zlib can be
@@ -10,7 +10,7 @@ zlib.h and zconf.h include files that correspond to the
 version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.0.6d" or "lpng106" and "zlib-1.1.3"
+might be called "libpng-1.0.6e" or "lpng106" and "zlib-1.1.3"
 or "zlib113") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -47,8 +47,8 @@ The files that are presently available in the scripts directory
 include
 
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
- makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6d)
+ makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6e)
- makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6d,
+ makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6e,
                        uses assembler code tuned for Intel MMX platform)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
@@ -59,9 +59,9 @@ include
  makefile.ibmc     =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
  libpng.icc        =>  Project file for IBM VisualAge/C++ version 4.0 or later
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
- makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.6d)
+ makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.6e)
  makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.6d)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.6e)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.mips     =>  MIPS makefile
  makefile.acorn    =>  Acorn makefile

LICENSE

@@ -5,7 +5,7 @@ Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
 Copyright (c) 1996, 1997 Andreas Dilger
 (libpng versions 0.90, December 1996, through 0.96, May 1997)
 Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
-(libpng versions 0.97, January 1998, through 1.0.6d, April 7, 2000)
+(libpng versions 0.97, January 1998, through 1.0.6e, April 10, 2000)
 
 For the purposes of this copyright and license, "Contributing Authors"
 is defined as the following set of individuals:
@@ -68,4 +68,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-April 7, 2000
+April 10, 2000

README

@@ -1,4 +1,4 @@
-README for libpng 1.0.6d - April 7, 2000 (shared library 2.1)
+README for libpng 1.0.6e - April 10, 2000 (shared library 2.1)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -172,9 +172,9 @@ Files in this distribution:
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng.so.2.1.0.6d)
+                            (gcc, creates libpng.so.2.1.0.6e)
        makefile.gcmmx   =>  Linux/ELF makefile (gcc, creates
-                            libpng.so.2.1.0.6d, uses assembler code
+                            libpng.so.2.1.0.6e, uses assembler code
                             tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -185,10 +185,10 @@ Files in this distribution:
        makefile.ibmc    =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
        libpng.icc       =>  Project file, IBM VisualAge/C++ 4.0 or later
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
-       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.6d)
+       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.6e)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng.so.2.1.0.6d)
+                            (gcc, creates libpng.so.2.1.0.6e)
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
        makefile.mips    =>  MIPS makefile
        makefile.acorn   =>  Acorn makefile

Y2KINFO

@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      April 7, 2000
+      April 10, 2000
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
 
       This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.0.6d are Y2K compliant.  It is my belief that earlier
+      upward through 1.0.6e are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer

configure

@@ -1,5 +1,5 @@
 echo "
-  There is no \"configure\" script for Libpng-1.0.6d.  Instead, please
+  There is no \"configure\" script for Libpng-1.0.6e.  Instead, please
   copy the appropriate makefile for your system from the \"scripts\"
   directory.  Read the INSTALL file for more details.
 "

libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "April 7, 2000"
+.TH LIBPNG 3 "April 10, 2000"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6d
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6e
 .SH SYNOPSIS
 \fI\fB
 
@@ -713,7 +713,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.6d - April 7, 2000
+ libpng version 1.0.6e - April 10, 2000
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@@ -1054,7 +1054,7 @@ where png_transforms is an integer containing the logical-or of some set of
 transformation flags.  This call is equivalent to png_read_info(),
 followed the set of transformations indicated by the transform mask,
 followed by png_update_info(), followed by a read of the image bytes
-to the info member `rowpointers', followed by png_read_end().
+to the info_ptr, followed by png_read_end().
 
 (The final parameter of this call is not yet used.  Someday it
 will point to transformation parameters.)
@@ -1827,7 +1827,6 @@ point to libpng-allocated storage with the following functions:
                    PNG_FREE_PLTE, PNG_FREE_TRNS,
                    PNG_FREE_HIST, PNG_FREE_ICCP,
                    PNG_FREE_SPLT, PNG_FREE_ROWS,
-                   PNG_FREE_PCAL, PNG_FREE_SCAL,
                    PNG_FREE_TEXT, PNG_FREE_UNKN,
                    or simply PNG_FREE_ALL
     n            - sequence number of item to be freed
@@ -1841,6 +1840,26 @@ of the selected data type, such as PLTE, is allowed.  If "n" is not
 -1, and multiple items are allowed for the data type identified in
 the mask, such as text or splt, only the n'th item is freed.
 
+The default behavior is only to free data that was allocated internally
+by libpng.  This can be changed, so that libpng will not free the data,
+or so that it will also free data that was passed in via a png_set_*()
+function, with
+
+    png_data_freer(png_ptr, info_ptr, freer, mask)
+    mask     - which data elements are affected
+               same choices as in png_free_data()
+    freer    - one of
+                 PNG_DESTROY_WILL_FREE_DATA
+                 PNG_SET_WILL_FREE_DATA
+                 PNG_USER_WILL_FREE_DATA
+
+This function only affects data that has already been allocated.
+You can call this function after reading the PNG data but before calling
+any png_set_*() functions, to control whether the user or the png_set_*()
+function is responsible for freeing any existing data that might be present,
+and again after the png_set_*() functions to control whether the user
+or png_destroy_*() is supposed to free the data..
+
 For a more compact example of reading a PNG image, see the file example.c.
 
 .SS Reading PNG files progressively
@@ -2439,7 +2458,7 @@ specification's ordering rules.
 At this point there are two ways to proceed; through the high-level
 write interface, or through a sequence of low-level write operations.
 You can use the high-level interface if your image data is present
-on the rowpointers member of the info structure.  All defined output
+in the info structure.  All defined output
 transformations are permitted, enabled by the following masks.
 
     PNG_TRANSFORM_IDENTITY      No transformation
@@ -2453,15 +2472,15 @@ transformations are permitted, enabled by the following masks.
     PNG_TRANSFORM_SWAP_ENDIAN   Byte-swap 16-bit samples
     PNG_TRANSFORM_STRIP_FILLER  Strip out filler bytes.
 
-If you have valid image data on the rowpointers member, simply do this:
+If you have valid image data in the info structure, simply do this:
 
     png_write_png(png_ptr, info_ptr, png_transforms, NULL)
 
 where png_transforms is an integer containing the logical-or of some set of
 transformation flags.  This call is equivalent to png_write_info(),
 followed by the set of transformations indicated by the transform
-mask, followed by followed by a write of the image bytes from the info
+mask, followed by followed by a write of the image bytes from the
-member `rowpointers', followed by png_write_end().
+info_ptr, followed by png_write_end().
 
 (The final parameter of this call is not yet used.  Someday it
 may point to output transformation parameters.)
@@ -2719,7 +2738,6 @@ point to libpng-allocated storage with the following functions:
                    PNG_FREE_PLTE, PNG_FREE_TRNS,
                    PNG_FREE_HIST, PNG_FREE_ICCP,
                    PNG_FREE_SPLT, PNG_FREE_ROWS,
-                   PNG_FREE_PCAL, PNG_FREE_SCAL,
                    PNG_FREE_TEXT, PNG_FREE_UNKN,
                    or simply PNG_FREE_ALL
     n            - sequence number of item to be freed
@@ -2736,6 +2754,35 @@ If you allocated data such as a palette that you passed in to libpng with
 png_set_*, you must not free it until just before the call to
 png_destroy_write_struct().
 
+The default behavior is only to free data that was allocated internally
+by libpng.  This can be changed, so that libpng will not free the data,
+or so that it will free data that was passed in via a png_set_*() function,
+with
+
+    png_data_freer(png_ptr, info_ptr, freer, mask)
+    mask     - which data elements are affected
+               same choices as in png_free_data()
+    freer    - one of
+                 PNG_DESTROY_WILL_FREE_DATA
+                 PNG_SET_WILL_FREE_DATA
+                 PNG_USER_WILL_FREE_DATA
+
+For example, to transfer responsibility for some data from a read structure
+to a write structure, you could use
+
+    png_data_freer(read_ptr, read_info_ptr,
+       PNG_USER_WILL_FREE_DATA,
+       PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+    png_data_freer(write_ptr, write_info_ptr,
+       PNG_DESTROY_WILL_FREE_DATA,
+       PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+
+Thereby briefly reassigning responsibility for freeing to the user but
+immediately afterwards reassigning it once more to the write_destroy
+function.  Having done this, it would then be safe to destroy the read
+structure and continue to use the PLTE, tRNS, and hIST data in the write
+structure.
+
 For a more compact example of writing a PNG image, see the file example.c.
 
 .SH V. Modifying/Customizing libpng:
@@ -2801,11 +2848,13 @@ but you could change this to do things like exit() if you should wish.
 On non-fatal errors, png_warning() is called
 to print a warning message, and then control returns to the calling code.
 By default png_error() and png_warning() print a message on stderr via
-fprintf() unless the library is compiled with PNG_NO_STDIO defined.  If
+fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined
-you wish to change the behavior of the error functions, you will need to
+(because you don't want the messages) or PNG_NO_STDIO defined (because
-set up your own message callbacks.  These functions are normally supplied
+fprintf() isn't available).  If you wish to change the behavior of the error
-at the time that the png_struct is created.  It is also possible to change
+functions, you will need to set up your own message callbacks.  These
-these functions after png_create_*_struct() has been called by calling:
+functions are normally supplied at the time that the png_struct is created.
+It is also possible to change these functions after png_create_*_struct()
+has been called by calling:
 
     png_set_error_fn(png_structp png_ptr,
         png_voidp error_ptr, png_error_ptr error_fn,
@@ -3108,13 +3157,13 @@ the old method.
 
 .SH VII. Y2K Compliance in libpng
 
-April 7, 2000
+April 10, 2000
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.0.6d are Y2K compliant.  It is my belief that earlier
+upward through 1.0.6e are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -3255,7 +3304,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.0.6d - April 7, 2000:
+Libpng version 1.0.6e - April 10, 2000:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
 
@@ -3270,7 +3319,7 @@ Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
 Copyright (c) 1996, 1997 Andreas Dilger
 (libpng versions 0.89c, May 1996, through 0.96, May 1997)
 Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
-(libpng versions 0.97, January 1998, through 1.0.6d, April 7, 2000)
+(libpng versions 0.97, January 1998, through 1.0.6e, April 10, 2000)
 
 For the purposes of this copyright and license, "Contributing Authors"
 is defined as the following set of individuals:

libpng.txt

@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.6d - April 7, 2000
+ libpng version 1.0.6e - April 10, 2000
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@@ -341,7 +341,7 @@ where png_transforms is an integer containing the logical-or of some set of
 transformation flags.  This call is equivalent to png_read_info(),
 followed the set of transformations indicated by the transform mask,
 followed by png_update_info(), followed by a read of the image bytes
-to the info member `rowpointers', followed by png_read_end().
+to the info_ptr, followed by png_read_end().
 
 (The final parameter of this call is not yet used.  Someday it
 will point to transformation parameters.)
@@ -1114,7 +1114,6 @@ point to libpng-allocated storage with the following functions:
                    PNG_FREE_PLTE, PNG_FREE_TRNS,
                    PNG_FREE_HIST, PNG_FREE_ICCP,
                    PNG_FREE_SPLT, PNG_FREE_ROWS,
-                   PNG_FREE_PCAL, PNG_FREE_SCAL,
                    PNG_FREE_TEXT, PNG_FREE_UNKN,
                    or simply PNG_FREE_ALL
     n            - sequence number of item to be freed
@@ -1128,6 +1127,26 @@ of the selected data type, such as PLTE, is allowed.  If "n" is not
 -1, and multiple items are allowed for the data type identified in
 the mask, such as text or splt, only the n'th item is freed.
 
+The default behavior is only to free data that was allocated internally
+by libpng.  This can be changed, so that libpng will not free the data,
+or so that it will also free data that was passed in via a png_set_*()
+function, with
+
+    png_data_freer(png_ptr, info_ptr, freer, mask)
+    mask     - which data elements are affected
+               same choices as in png_free_data()
+    freer    - one of
+                 PNG_DESTROY_WILL_FREE_DATA
+                 PNG_SET_WILL_FREE_DATA
+                 PNG_USER_WILL_FREE_DATA
+
+This function only affects data that has already been allocated.
+You can call this function after reading the PNG data but before calling
+any png_set_*() functions, to control whether the user or the png_set_*()
+function is responsible for freeing any existing data that might be present,
+and again after the png_set_*() functions to control whether the user
+or png_destroy_*() is supposed to free the data..
+
 For a more compact example of reading a PNG image, see the file example.c.
 
 Reading PNG files progressively
@@ -1726,7 +1745,7 @@ The high-level write interface
 At this point there are two ways to proceed; through the high-level
 write interface, or through a sequence of low-level write operations.
 You can use the high-level interface if your image data is present
-on the rowpointers member of the info structure.  All defined output
+in the info structure.  All defined output
 transformations are permitted, enabled by the following masks.
 
     PNG_TRANSFORM_IDENTITY      No transformation
@@ -1740,15 +1759,15 @@ transformations are permitted, enabled by the following masks.
     PNG_TRANSFORM_SWAP_ENDIAN   Byte-swap 16-bit samples
     PNG_TRANSFORM_STRIP_FILLER  Strip out filler bytes.
 
-If you have valid image data on the rowpointers member, simply do this:
+If you have valid image data in the info structure, simply do this:
 
     png_write_png(png_ptr, info_ptr, png_transforms, NULL)
 
 where png_transforms is an integer containing the logical-or of some set of
 transformation flags.  This call is equivalent to png_write_info(),
 followed by the set of transformations indicated by the transform
-mask, followed by followed by a write of the image bytes from the info
+mask, followed by followed by a write of the image bytes from the
-member `rowpointers', followed by png_write_end().
+info_ptr, followed by png_write_end().
 
 (The final parameter of this call is not yet used.  Someday it
 may point to output transformation parameters.)
@@ -2006,7 +2025,6 @@ point to libpng-allocated storage with the following functions:
                    PNG_FREE_PLTE, PNG_FREE_TRNS,
                    PNG_FREE_HIST, PNG_FREE_ICCP,
                    PNG_FREE_SPLT, PNG_FREE_ROWS,
-                   PNG_FREE_PCAL, PNG_FREE_SCAL,
                    PNG_FREE_TEXT, PNG_FREE_UNKN,
                    or simply PNG_FREE_ALL
     n            - sequence number of item to be freed
@@ -2023,6 +2041,35 @@ If you allocated data such as a palette that you passed in to libpng with
 png_set_*, you must not free it until just before the call to
 png_destroy_write_struct().
 
+The default behavior is only to free data that was allocated internally
+by libpng.  This can be changed, so that libpng will not free the data,
+or so that it will free data that was passed in via a png_set_*() function,
+with
+
+    png_data_freer(png_ptr, info_ptr, freer, mask)
+    mask     - which data elements are affected
+               same choices as in png_free_data()
+    freer    - one of
+                 PNG_DESTROY_WILL_FREE_DATA
+                 PNG_SET_WILL_FREE_DATA
+                 PNG_USER_WILL_FREE_DATA
+
+For example, to transfer responsibility for some data from a read structure
+to a write structure, you could use
+
+    png_data_freer(read_ptr, read_info_ptr,
+       PNG_USER_WILL_FREE_DATA,
+       PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+    png_data_freer(write_ptr, write_info_ptr,
+       PNG_DESTROY_WILL_FREE_DATA,
+       PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
+
+Thereby briefly reassigning responsibility for freeing to the user but
+immediately afterwards reassigning it once more to the write_destroy
+function.  Having done this, it would then be safe to destroy the read
+structure and continue to use the PLTE, tRNS, and hIST data in the write
+structure.
+
 For a more compact example of writing a PNG image, see the file example.c.
 
 V. Modifying/Customizing libpng:
@@ -2088,11 +2135,13 @@ but you could change this to do things like exit() if you should wish.
 On non-fatal errors, png_warning() is called
 to print a warning message, and then control returns to the calling code.
 By default png_error() and png_warning() print a message on stderr via
-fprintf() unless the library is compiled with PNG_NO_STDIO defined.  If
+fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined
-you wish to change the behavior of the error functions, you will need to
+(because you don't want the messages) or PNG_NO_STDIO defined (because
-set up your own message callbacks.  These functions are normally supplied
+fprintf() isn't available).  If you wish to change the behavior of the error
-at the time that the png_struct is created.  It is also possible to change
+functions, you will need to set up your own message callbacks.  These
-these functions after png_create_*_struct() has been called by calling:
+functions are normally supplied at the time that the png_struct is created.
+It is also possible to change these functions after png_create_*_struct()
+has been called by calling:
 
     png_set_error_fn(png_structp png_ptr,
         png_voidp error_ptr, png_error_ptr error_fn,
@@ -2395,13 +2444,13 @@ the old method.
 
 VII. Y2K Compliance in libpng
 
-April 7, 2000
+April 10, 2000
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.0.6d are Y2K compliant.  It is my belief that earlier
+upward through 1.0.6e are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 April 7, 2000
+.TH LIBPNGPF 3 April 10, 2000
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6d
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.6e
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "April 7, 2000"
+.TH PNG 5 "April 10, 2000"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * libpng version 1.0.6d - April 7, 2000
+ * libpng version 1.0.6e - April 10, 2000
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@@ -14,14 +14,14 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_6d Your_png_h_is_not_version_1_0_6d;
+typedef version_1_0_6e Your_png_h_is_not_version_1_0_6e;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
 
 #ifdef PNG_USE_GLOBAL_ARRAYS
 /* png_libpng_ver was changed to a function in version 1.0.5c */
-char png_libpng_ver[12] = "1.0.6d";
+char png_libpng_ver[12] = "1.0.6e";
 
 /* png_sig was changed to a function in version 1.0.5c */
 /* Place to hold the signature string for a PNG file. */
@@ -261,9 +261,26 @@ png_info_init(png_infop info_ptr)
    png_memset(info_ptr, 0, sizeof (png_info));
 }
 
+void
+png_data_freer(png_structp png_ptr, png_infop info_ptr,
+   int freer, png_uint_32 mask)
+{
+   png_debug(1, "in png_data_freer\n");
+   if (png_ptr == NULL || info_ptr == NULL)
+      return;
+   if(freer == PNG_DESTROY_WILL_FREE_DATA)
+      info_ptr->free_me |= mask;
+   else if(freer == PNG_USER_WILL_FREE_DATA)
+      info_ptr->free_me &= ~mask;
+   else
+      png_warning(png_ptr,
+         "Unknown freer parameter in png_data_freer.");
+}
+
 void
 png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, int num)
 {
+   png_debug(1, "in png_free_data\n");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -306,7 +323,6 @@ if (mask & PNG_FREE_TRNS)
 
 #if defined(PNG_sCAL_SUPPORTED)
 /* free any sCAL entry */
-if (mask & PNG_FREE_SCAL)
 {
    if (info_ptr->valid & PNG_INFO_sCAL)
    {
@@ -321,7 +337,6 @@ if (mask & PNG_FREE_SCAL)
 
 #if defined(PNG_pCAL_SUPPORTED)
 /* free any pCAL entry */
-if (mask & PNG_FREE_PCAL)
 {
    if (info_ptr->valid & PNG_INFO_pCAL)
    {
@@ -484,7 +499,9 @@ png_get_io_ptr(png_structp png_ptr)
 #if !defined(PNG_NO_STDIO)
 /* Initialize the default input/output functions for the PNG file.  If you
  * use your own read or write routines, you can call either png_set_read_fn()
- * or png_set_write_fn() instead of png_init_io().
+ * or png_set_write_fn() instead of png_init_io().  If you have defined
+ * PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't
+ * necessarily available.
  */
 void
 png_init_io(png_structp png_ptr, FILE *fp)
@@ -544,7 +561,7 @@ png_charp
 png_get_copyright(png_structp png_ptr)
 {
    if (png_ptr != NULL || png_ptr == NULL)  /* silence compiler warning */
-   return ("\n libpng version 1.0.6d - April 7, 2000\n\
+   return ("\n libpng version 1.0.6e - April 10, 2000\n\
    Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n\
    Copyright (c) 1996, 1997 Andreas Dilger\n\
    Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson\n");
@@ -562,8 +579,8 @@ png_get_libpng_ver(png_structp png_ptr)
 {
    /* Version of *.c files used when building libpng */
    if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
-      return("1.0.6d");
+      return("1.0.6e");
-   return("1.0.6d");
+   return("1.0.6e");
 }
 
 png_charp

png.h

@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.0.6d - April 7, 2000
+ * libpng version 1.0.6e - April 10, 2000
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@@ -9,7 +9,7 @@
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.0.6d - April 7, 2000: Glenn
+ *  libpng versions 0.97, January 1998, through 1.0.6e - April 10, 2000: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -47,7 +47,7 @@
  *    1.0.5e-r                 1.0.5e-r 10100  2.1.0.5e-r (not compatible)
  *    1.0.5s-v                 1.0.5s-v 10006  2.1.0.5s-v (compatible)
  *    1.0.6 (+ 3 patches)      1.0.6    10006  2.1.0.6
- *    1.0.6d                   1.0.6d   10007  2.1.0.6d
+ *    1.0.6d-e                 1.0.6d-e 10007  2.1.0.6d-e
  *    1.0.7                    1.0.7    10007  2.1.0.7    (still compatible)
  *
  *    Henceforth the source version will match the shared-library minor
@@ -73,7 +73,7 @@
  * Copyright (c) 1996, 1997 Andreas Dilger
  * (libpng versions 0.89c, June 1996, through 0.96, May 1997)
  * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
- * (libpng versions 0.97, January 1998, through 1.0.6d, April 7, 2000)
+ * (libpng versions 0.97, January 1998, through 1.0.6e, April 10, 2000)
  *
  * For the purposes of this copyright and license, "Contributing Authors"
  * is defined as the following set of individuals:
@@ -148,13 +148,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    April 7, 2000
+ *    April 10, 2000
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.0.6d are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.0.6e are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -232,7 +232,7 @@ extern "C" {
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.6d"
+#define PNG_LIBPNG_VER_STRING "1.0.6e"
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -428,16 +428,20 @@ typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
  * The following members may have allocated storage attached that should be
  * cleaned up before the structure is discarded: palette, trans, text,
  * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
- * splt_palettes, scal_unit, and row_pointers.   These are automatically
+ * splt_palettes, scal_unit, row_pointers, and unknowns.   By default, these are
- * freed when the info structure is deallocated.
+ * automatically freed when the info structure is deallocated, if they were
+ * allocated internally by libpng.  This behavior can be changed by means
+ * of the png_data_freer() function.
  *
  * More allocation details: all the chunk-reading functions that change these
- * members go through the corresponding png_set_* functions.  Functions to
+ * members go through the corresponding png_set_* functions.  A function to
- * clear these members are available: see png_free_*.  The png_set_* functions
+ * clear these members is available: see png_free_data().   Some of the
- * do not depend on being able to point info structure members to any of the
+ * png_set_* functions do not depend on being able to point info structure
- * storage they are passed (they make their own copies), EXCEPT that the
+ * members to any of the storage they are passed (they make their own copies),
- * png_set_text function uses the same storage passed to them
+ * EXCEPT that the png_set_text functions use the same storage passed to them
- * in the text_ptr or itxt_ptr structure argument.
+ * in the text_ptr or itxt_ptr structure argument, and the png_set_tRNS,
+ * png_set_PLTE, png_set_hIST, png_set_iCCP, png_set_rows, png_set_sPLT,
+ * and png_set_unknowns do not make their own copies.
  */
 typedef struct png_info_struct
 {
@@ -1057,9 +1061,9 @@ struct png_struct_def
 };
 
 /* This prevents a compiler error in png_get_copyright() in png.c if png.c
-and png.h are both at * version 1.0.6d
+and png.h are both at * version 1.0.6e
  */
-typedef png_structp version_1_0_6d;
+typedef png_structp version_1_0_6e;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -1591,10 +1595,18 @@ extern PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr,
 /* frees a pointer allocated by png_malloc() */
 extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr));
 
-/* free data that was allocated internally */
+/* Free data that was allocated internally */
 extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
    png_infop info_ptr, png_uint_32 free_me, int num));
-/* flags for png_ptr->free_me and info_ptr->free_me */
+/* Reassign responsibility for freeing existing data, whether allocated
+ * by libpng or by the application */
+extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr,
+   png_infop info_ptr, int freer, png_uint_32 mask));
+/* assignments for png_data_freer */
+#define PNG_DESTROY_WILL_FREE_DATA 1
+#define PNG_SET_WILL_FREE_DATA 1
+#define PNG_USER_WILL_FREE_DATA 2
+/* Flags for png_ptr->free_me and info_ptr->free_me */
 #define PNG_FREE_PLTE 0x0001
 #define PNG_FREE_TRNS 0x0002
 #define PNG_FREE_TEXT 0x0004
@@ -1602,8 +1614,8 @@ extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
 #define PNG_FREE_ICCP 0x0010
 #define PNG_FREE_SPLT 0x0020
 #define PNG_FREE_ROWS 0x0040
-#define PNG_FREE_PCAL 0x0080
+#define PNG_FREE_PCAL 0x0080 /* not used any more */
-#define PNG_FREE_SCAL 0x0100
+#define PNG_FREE_SCAL 0x0100 /* not used any more */
 #define PNG_FREE_UNKN 0x0200
 #define PNG_FREE_LIST 0x0400
 #define PNG_FREE_ALL  0x07ff
@@ -2032,7 +2044,7 @@ extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr)
 extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
 
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.0.6d - April 7, 2000 (header)\n"
+   " libpng version 1.0.6e - April 10, 2000 (header)\n"
 
 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
 /* With these routines we avoid an integer divide, which will be slower on

pngasmrd.h

@@ -1,6 +1,6 @@
 /* pngasmrd.h - assembler version of utilities to read a PNG file
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1999, 2000 Glenn Randers-Pehrson
  *

pngconf.h

@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
@@ -255,7 +255,7 @@
  * things to happen if the library and/or application ever change.
  */
 
-/* Any transformations you will not be using can be undef'ed here */
+/* Any features you will not be using can be undef'ed here */
 
 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
    to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
@@ -267,7 +267,13 @@
    1.0.1c, for consistency)
  */
 
+#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
+#define PNG_FLOATING_POINT_SUPPORTED
+#endif
 
+#ifndef PNG_NO_FIXED_POINT_SUPPORTED
+#define PNG_FIXED_POINT_SUPPORTED
+#endif
 
 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
     !defined(PNG_NO_READ_TRANSFORMS)
@@ -387,7 +393,8 @@
                                             encoders, but can cause trouble
                                             if left undefined */
 
-#ifndef PNG_NO_WRITE_WEIGHTED_FILTER
+#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
+     defined(PNG_FLOATING_POINT_SUPPORTED)
 #define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
 #endif
 
@@ -428,14 +435,6 @@
 #define PNG_ASSEMBLER_CODE_SUPPORTED
 #endif
 
-#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
-#define PNG_FLOATING_POINT_SUPPORTED
-#endif
-
-#ifndef PNG_NO_FIXED_POINT_SUPPORTED
-#define PNG_FIXED_POINT_SUPPORTED
-#endif
-
 /* Do not use global arrays (helps with building DLL's)
  * They are no longer used in libpng itself, since version 1.0.5c,
  * but might be required for some pre-1.0.5c applications.

pngerror.c

@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pnggccrd.c

@@ -6,7 +6,7 @@
  *     and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
  *     for Intel's performance analysis of the MMX vs. non-MMX code.
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998, Intel Corporation
  * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson

pngget.c

@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngmem.c

@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngpread.c

@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngread.c

@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
@@ -641,7 +641,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
  * not called png_set_interlace_handling(), the display_row buffer will
  * be ignored, so pass NULL to it.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.6d.
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.6e.
  */
 
 void
@@ -690,7 +690,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
  * only call this function once.  If you desire to have an image for
  * each pass of a interlaced image, use png_read_rows() instead.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.6d.
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.6e.
  */
 void
 png_read_image(png_structp png_ptr, png_bytepp image)

pngrio.c

@@ -1,7 +1,7 @@
 
 /* pngrio.c - functions for data input
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngrtran.c

@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngrutil.c

@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
@@ -392,8 +392,9 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    }
 
    num = (int)length / 3;
+
    palette = (png_colorp)png_zalloc(png_ptr, (uInt)num, sizeof (png_color));
-   png_ptr->free_me |= PNG_FREE_PLTE;
+
    for (i = 0; i < num; i++)
    {
       png_byte buf[3];
@@ -431,7 +432,6 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
          else
          {
             png_chunk_warning(png_ptr, "CRC error");
-            png_ptr->free_me &= ~PNG_FREE_PLTE;
             png_zfree(png_ptr, palette);
             return;
          }
@@ -445,6 +445,9 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 #endif
    png_ptr->palette = palette;
    png_ptr->num_palette = (png_uint_16)num;
+
+   png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
+   png_ptr->free_me |= PNG_FREE_PLTE;
    png_set_PLTE(png_ptr, info_ptr, palette, num);
 
 #if defined (PNG_READ_tRNS_SUPPORTED)
@@ -452,10 +455,15 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    {
       if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
       {
-         if (png_ptr->num_trans > png_ptr->num_palette)
+         if (png_ptr->num_trans > (png_uint_16)num)
          {
             png_warning(png_ptr, "Truncating incorrect tRNS chunk length");
-            png_ptr->num_trans = png_ptr->num_palette;
+            png_ptr->num_trans = (png_uint_16)num;
+         }
+         if (info_ptr->num_trans > (png_uint_16)num)
+         {
+            png_warning(png_ptr, "Truncating incorrect info tRNS chunk length");
+            info_ptr->num_trans = (png_uint_16)num;
          }
       }
    }
@@ -543,7 +551,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       {
          png_warning(png_ptr,
            "Ignoring incorrect gAMA value when sRGB is also present");
-#ifndef PNG_NO_CONSOLE_IO
+#ifndef PNG_NO_STDIO
          fprintf(stderr, "gamma = (%d/100000)\n", (int)igamma);
 #endif
          return;
@@ -753,7 +761,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
             png_warning(png_ptr,
               "Ignoring incorrect cHRM value when sRGB is also present");
-#ifndef PNG_NO_CONSOLE_IO
+#ifndef PNG_NO_STDIO
 #ifdef PNG_FLOATING_POINT_SUPPORTED
             fprintf(stderr,"wx=%f, wy=%f, rx=%f, ry=%f\n",
                white_x, white_y, red_x, red_y);
@@ -765,7 +773,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
             fprintf(stderr,"gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
                int_x_green, int_y_green, int_x_blue, int_y_blue);
 #endif
-#endif /* PNG_NO_CONSOLE_IO */
+#endif /* PNG_NO_STDIO */
          }
          png_crc_finish(png_ptr, 0);
          return;
@@ -848,7 +856,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       {
          png_warning(png_ptr,
            "Ignoring incorrect gAMA value when sRGB is also present");
-#ifndef PNG_NO_CONSOLE_IO
+#ifndef PNG_NO_STDIO
 #  ifdef PNG_FIXED_POINT_SUPPORTED
          fprintf(stderr,"incorrect gamma=(%d/100000)\n",(int)png_ptr->int_gamma);
 #  else
@@ -923,7 +931,6 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 #endif
 
    chunkdata = (png_charp)png_malloc(png_ptr, length + 1);
-   png_ptr->free_me |= PNG_FREE_ICCP;
    slength = (png_size_t)length;
    png_crc_read(png_ptr, (png_bytep)chunkdata, slength);
 
@@ -1103,7 +1110,6 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       }
 
       png_ptr->trans = (png_bytep)png_malloc(png_ptr, length);
-      png_ptr->free_me |= PNG_FREE_TRNS;
       png_crc_read(png_ptr, png_ptr->trans, (png_size_t)length);
       png_ptr->num_trans = (png_uint_16)length;
    }
@@ -1149,6 +1155,8 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    if (png_crc_finish(png_ptr, 0))
       return;
 
+   png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
+   png_ptr->free_me |= PNG_FREE_TRNS;
    png_set_tRNS(png_ptr, info_ptr, png_ptr->trans, png_ptr->num_trans,
       &(png_ptr->trans_values));
 }
@@ -1283,7 +1291,6 @@ png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    num = (int)length / 2 ;
    png_ptr->hist = (png_uint_16p)png_malloc(png_ptr,
       (png_uint_32)(num * sizeof (png_uint_16)));
-   png_ptr->free_me |= PNG_FREE_HIST;
    for (i = 0; i < num; i++)
    {
       png_byte buf[2];
@@ -1295,6 +1302,8 @@ png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    if (png_crc_finish(png_ptr, 0))
       return;
 
+   png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
+   png_ptr->free_me |= PNG_FREE_HIST;
    png_set_hIST(png_ptr, info_ptr, png_ptr->hist);
 }
 #endif

pngset.c

@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
@@ -425,6 +425,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
    if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
       return;
 
+   png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
    info_ptr->iccp_name = png_malloc(png_ptr, png_strlen(name)+1);
    strcpy(info_ptr->iccp_name, name);
    info_ptr->iccp_profile = png_malloc(png_ptr, proflen);
@@ -754,8 +755,8 @@ png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
+   png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
    info_ptr->row_pointers = row_pointers;
-   info_ptr->free_me |= PNG_FREE_ROWS;
 }
 #endif
 

pngtest.c

@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
@@ -1344,4 +1344,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_6d your_png_h_is_not_version_1_0_6d;
+typedef version_1_0_6e your_png_h_is_not_version_1_0_6e;

pngtrans.c

@@ -1,7 +1,7 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngvcrd.c

@@ -2,7 +2,7 @@
  *
  * For Intel x86 CPU and Microsoft Visual C++ compiler
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998, Intel Corporation
  * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson

pngwio.c

@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngwrite.c

@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngwtran.c

@@ -1,7 +1,7 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

pngwutil.c

@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng 1.0.6d - April 7, 2000
+ * libpng 1.0.6e - April 10, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger

scripts/makefile.beos

@@ -31,7 +31,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.6d
+PNGMIN = 1.0.6e
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a, libpng.so*, and png.h

scripts/makefile.dec

@@ -14,7 +14,7 @@ ZLIBINC=../zlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.6d
+PNGMIN = 1.0.6e
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=cc

scripts/makefile.gcmmx

@@ -34,7 +34,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.6d
+PNGMIN = 1.0.6e
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/makefile.linux

@@ -34,7 +34,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.6d
+PNGMIN = 1.0.6e
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/makefile.sco

@@ -25,7 +25,7 @@ RANLIB=echo
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.6d
+PNGMIN = 1.0.6e
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/makefile.sggcc

@@ -19,8 +19,8 @@ CFLAGS=-I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32 # -g -DPNG_DEBUG=5
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=gcc -shared
 
-VER=1.0.6d
+VER=1.0.6e
-LIBS=libpng.so.1.0.6d
+LIBS=libpng.so.1.0.6e
 SHAREDLIB=libpng.so
 libdir=$(prefix)/lib32
 

scripts/makefile.solaris

@@ -31,7 +31,7 @@ RANLIB=echo
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.6d
+PNGMIN = 1.0.6e
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/pngdef.pas

@@ -3,7 +3,7 @@ unit pngdef;
 interface
 
 const
-  PNG_LIBPNG_VER_STRING = '1.0.6d';
+  PNG_LIBPNG_VER_STRING = '1.0.6e';
   PNG_LIBPNG_VER        =  10007;
 
 type