changelog.txt_save

It was built with libpng version 1.2.35, and is running with libpng version 1.2.35

Change log:

Version 1.6.17 (built with libpng-1.2.36rc01 and zlib-1.2.3.2)
  Defined TOO_FAR == 32767 in deflate.c (again).  The definition
    has continually been inadvertently omitted during zlib updates
    since pngcrush version 1.6.4.
  Revised handling of xcode files so at least we can get printout
    of IHDR values with "pngcrush -fix -n -v xcode.png"

Version 1.6.16 (built with libpng-1.2.35 and zlib-1.2.3.2)
  Added -newtimestamp and -oldtimestamp options and changed
    default condition to timestamping the output file with
    the current time (i.e., -newtimestamp is default)
  If the -oldtimestamp option is used then the output file
    has the same timestamp as the input file.
  Added CgBI chunk detection.

Version 1.6.15 (built with libpng-1.2.35 and zlib-1.2.3.2)
  Fixes some missing typecasts on png_malloc() calls, patch from
    an anonymous reporter to the SourceForge bug tracker.
  Added -time_stamp option to change time stamping from default
    condition.

Version 1.6.14 (built with libpng-1.2.35 and zlib-1.2.3.2)
  Avoids CVE-2009-0040.

Version 1.6.12 (built with libpng-1.2.34 and zlib-1.2.3.2)

Version 1.6.11 (built with libpng-1.2.33 and zlib-1.2.3.2)
  Eliminated a memory leak in libpng with writing bad tEXt chunks.

Version 1.6.10 (built with libpng-1.2.31 and zlib-1.2.3.2)
  Add sTER chunk support.

Version 1.6.9 (built with libpng-1.2.31 and zlib-1.2.3.2)
  Updated cexcept.h to version 2.0.1
  Add missing curly brackets.

Version 1.6.8 (built with libpng-1.2.29 and zlib-1.2.3.2)
  Fixed bug with handling of -z and -zi options.

Version 1.6.7 (built with libpng-1.2.29 and zlib-1.2.3.2)
  Moved PNG_UINT_CHNK and some other defines from pngcrush.h to pngcrush.c
  Reject invalid color_type or bit_depth.

Version 1.6.6 (built with libpng-1.2.29 and zlib-1.2.3.2)
  Added dSIG support.  Pngcrush will not rewrite an image containing
  a dSIG chunk immediately following the IHDR chunk, unless the
  dSIG is explicitly removed with "-rem dSIG" or explicitly kept
  with "-keep dSIG".  In the latter case the saved dSIG chunks will
  become invalid if any changes are made to the datastream.

  Fixed bug in writing unknown chunks from the end_info_ptr.

Version 1.6.5 (built with libpng-1.2.29 and zlib-1.2.3.2)
  Discontinued adding a new gAMA chunk when writing sRGB chunk.

Version 1.6.4 (built with libpng-1.2.9rc1 and zlib-1.2.3)
  Fixed bug in handling of undocumented -trns_a option (Michal Politowski).
  Fixed bug with "nosave" handling of unknown chunks.

Version 1.6.3 (built with libpng-1.2.9beta11 and zlib-1.2.3)

  Fixed documentation of iTXt input (Shlomi Tal).
  Removed #define PNG_INTERNAL and provided prototypes for some
  internal libpng functions that are duplicated in pngcrush.c

Version 1.6.2 (built with libpng-1.2.8 and zlib-1.2.3)

  Fixed bug with "PNG_ROWBYTES" usage, introduced in version 1.6.0.
  The bug could cause a crash and only affects the "nolib" builds.

  Converted C++ style (// ...) comments to C style (/* ... */).

  Defined TOO_FAR == 32767 in deflate.c (again).  The definition was
  omitted from version 1.6.0 when zlib was upgraded to version 1.2.3.

Version 1.6.1 (distributed as 1.6.0, built with libpng-1.2.8 and zlib-1.2.3)

  Copied non-exported libpng functions from libpng into pngcrush, to make
  pngcrush play more nicely with shared libpng.  These are #ifdef'ed out
  when a static library is being built with the bundled libpng and
  pngcrush.h is included.

Version 1.6.0-grr (built with libpng-1.2.4 and zlib-1.1.4pc or zlib-1.2.2)

  Moved ChangeLog out of pngcrush.c comments and into a separate file.

  Filtered pngcrush.c through "indent -kr" and "expand" for readability.

  Moved 550 lines of usage/help/copyright/license/version info to separate
  function(s) and cleaned up significantly.

  Added some comments for ease of navigation and readability.

  Stripped out a bunch of ancient-libpng compatibility stuff.

  Defined PNG_UINT_* macros (pngcrush.h for now).

  Fixed unknown-chunk handling ("-rem alla" and "-rem gifx" now work).

  Created modified version of makefile that supports external zlib.

  Added support for methods using Z_RLE zlib strategy (zlib 1.2.x only).

  Documented -huffman option in usage screen.

  Added IDAT statistics to final per-file summary.

  Added utime() support to give output files same timestamps as input files.

Version 1.5.10 (built with libpng-1.2.4 and zlib-1.1.4pc)

  Fixed bug, introduced in 1.5.9, that caused defaults for method 0 to
  be used instead of copying the original image, when the original was
  already smallest.

Version 1.5.9 (built with libpng-1.2.4beta3 and zlib-1.1.4pc)

  Work around CPU timer wraparound at 2G microseconds.

  Upgraded zlib from 1.1.3 to 1.1.4.  Pngcrush is believed not to
  be vulnerable to the zlib-1.1.3 buffer-overflow bug.

  Choose the first instance of smallest IDAT instead of the last,
  for faster final recompression, suggested by TSamuel.

Version 1.5.8 (built with libpng-1.2.1)

  Added -trns_a option for entering a tRNS array.

Version 1.5.7 (built with libpng-1.2.0)

  Added setargv.obj to Makefile.msc to expand wildcards, e.g., *.png

  Use constant string "pngcrush" instead of argv[0] when appropriate.

  Only check stats for infile==outfile once per input file, or not at all
  if "-nofilecheck" option is present or if a directory was created.

  Fixed bugs with changing bit_depth of grayscale images.

Version 1.5.6 (built with libpng-1.0.12)

  Eliminated extra "Removed the cHNK chunk" messages generated by version
  1.5.5 when "-rem alla" or "-rem allb" is used.

  All unknown chunks including safe-to-copy chunks are now removed in
  response to the "-rem alla" or "-rem allb" options.

  Issue a warning if the user tries "-cc" option when it is not supported.

Version 1.5.5 (built with libpng-1.0.12)

  Reset reduce_to_gray and it_is_opaque flags prior to processing each
  image.

  Enable removal of safe-to-copy chunks that are being handled as unknown
  e.g., "-rem time".

Version 1.5.4 (built with libpng-1.0.11)

  Added 262 to the length of uncompressed data when calculating
  required_window_size, to account for zlib/deflate implementation.

  Added "-bit_depth n" to the help screen.

  Call png_set_packing() when increasing bit_depth to 2 or 4.

  Added warning about not overwriting an existing tRNS chunk.

  Reduced the memory usage

  Write 500K IDAT chunks even when system libpng is being used.

  Ignore all-zero cHRM chunks, with a warning.

Version 1.5.3 (built with libpng-1.0.9beta5)

  Added "-loco" option (writes MNG files with filter_method 64)

  "-dir" and "-ext" options are no longer mutually exclusive, e.g.:
  pngcrush -loco -dir Crushed -ext .mng *.png

Version 1.5.2 (built with libpng-1.0.9beta1)

  Added "-iccp" option.

  Increased the zlib memory level, which improves compression (typically
  about 1.3 percent for photos) at the expense of increased memory usage.

  Enabled the "-max max_idat_size" option, even when max_idat_size
  exceeds the default 1/2 megabyte size.

  Added missing "png_ptr" argument to png_error() call

  Added "-loco" option, to enable the LOCO color transformation
  (R->R-G, G, B->B-G) while writing a MNG with filter_method 64. Undo
  the transformation and write the regular PNG filter_method (0) if the
  MNG filter_method 64 is detected.

  Revised the "-help" output slightly and improved the "-version" output.

  The "-already[_crushed]" option is now ignored if the "-force" option
  is present or if chunks are being added, deleted, or modified.

  Improved "things_have_changed" behavior (now, when set in a particular
  file, it is not set for all remaining files)

Version 1.5.1 (built with libpng-1.0.8)