libpng fail with zlib 1.2.11.1

=====================================
   libpng 1.6.29: ./test-suite.log
=====================================

# TOTAL: 32
# PASS:  31
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: tests/pngtest
===================


 Testing libpng version 1.6.29
   with zlib   version 1.2.11.1-motley.zlib-ng

libpng version 1.6.29 - March 16, 2017
Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
Copyright (c) 1996-1997 Andreas Dilger
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
 library (10629): libpng version 1.6.29 - March 16, 2017

 pngtest (10629): libpng version 1.6.29 - March 16, 2017

 Testing ./tests/badcrc.png:
 Image width = 1, height = 1

Files ./tests/badcrc.png and pngout.png are different
   Was ./tests/badcrc.png written with the same maximum IDAT chunk size
(8192 bytes),
   filtering heuristic (libpng default), compression level (zlib default),
   and zlib version (1.2.11.1-motley.zlib-ng)?


 PASS (1 zero samples)

 Testing ./tests/badcrc.png:
 Pass 0: rw
 Image width = 1, height = 1

Files ./tests/badcrc.png and pngout.png are different

 PASS (1 zero samples)

 Testing ./tests/badcrc.png:rw
 Image width = 1, height = 1

Files ./tests/badcrc.png and pngout.png are different

 PASS (1 zero samples)
 libpng passes test
 Default limits:
  width_max  = 1000000
  height_max = 1000000
  cache_max  = 1000
  malloc_max = 8000000
libpng error: IDAT: incorrect data check

 Testing libpng version 1.6.29
   with zlib   version 1.2.11.1-motley.zlib-ng

libpng version 1.6.29 - March 16, 2017
Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
Copyright (c) 1996-1997 Andreas Dilger
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
 library (10629): libpng version 1.6.29 - March 16, 2017

 pngtest (10629): libpng version 1.6.29 - March 16, 2017

 Testing ./tests/badadler.png:./tests/badadler.png: libpng warning:
IDAT: incorrect data check
./tests/badadler.png -> libpng error: IDAT: incorrect data check
libpng error: IDAT: incorrect data check
pngout.png: libpng read error
 FAIL

 Testing ./tests/badadler.png:./tests/badadler.png: libpng warning:
IDAT: incorrect data check
./tests/badadler.png -> pngout.png: libpng read error
 FAIL

 Testing ./tests/badadler.png:./tests/badadler.png: libpng warning:
IDAT: incorrect data check
./tests/badadler.png -> pngout.png: libpng read error
 FAIL
 libpng FAILS test
 Default limits:
  width_max  = 1000000
  height_max = 1000000
  cache_max  = 1000
  malloc_max = 8000000

 Testing libpng version 1.6.29
   with zlib   version 1.2.11.1-motley.zlib-ng

libpng version 1.6.29 - March 16, 2017
Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
Copyright (c) 1996-1997 Andreas Dilger
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
 library (10629): libpng version 1.6.29 - March 16, 2017

 pngtest (10629): libpng version 1.6.29 - March 16, 2017

 Testing ./pngtest.png:
   Text compression[0]=-1

 stereo mode = 1
 vpAg = 100 x 100, units = 0

   Text compression[0]=0

 Image width = 91, height = 69

Files ./pngtest.png and pngout.png are different
   Was ./pngtest.png written with the same maximum IDAT chunk size (8192
bytes),
   filtering heuristic (libpng default), compression level (zlib default),
   and zlib version (1.2.11.1-motley.zlib-ng)?

 FAIL

 Testing ./pngtest.png:
   Text compression[0]=-1

 stereo mode = 1
 vpAg = 100 x 100, units = 0

 Pass 0: rwrwrwrwrwrwrwrwrw
 Pass 1: rwrwrwrwrwrwrwrwrw
 Pass 2: rwrwrwrwrwrwrwrw
 Pass 3: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
 Pass 4: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
 Pass 5: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
         rwrwrwrw
 Pass 6: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
         rwrwrwrwrw
   Text compression[0]=0

 Image width = 91, height = 69

Files ./pngtest.png and pngout.png are different
 FAIL

 Testing ./pngtest.png:
   Text compression[0]=-1

 stereo mode = 1
 vpAg = 100 x 100, units = 0

 Pass 0: rwrwrwrwrwrwrwrwrw
 Pass 1: rwrwrwrwrwrwrwrwrw
 Pass 2: rwrwrwrwrwrwrwrw
 Pass 3: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
 Pass 4: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
 Pass 5: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
         rwrwrwrw
 Pass 6: rwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrwrw
         rwrwrwrwrw
   Text compression[0]=0

 Image width = 91, height = 69

Files ./pngtest.png and pngout.png are different
 FAIL
 libpng FAILS test
 Default limits:
  width_max  = 1000000
  height_max = 1000000
  cache_max  = 1000
  malloc_max = 8000000
FAIL tests/pngtest (exit status: 1)

./pngfix pngtest.png ; ./pngfix pngout.png
IDAT OK  default 15 15 8119 25247 pngtest.png
zTXt OK  default 8 8 185 246 pngtest.png
IDAT OK  default 15 15 8099 25247 pngout.png
zTXt OK  default 8 8 185 246 pngout.png



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