libpng 1.6.36 testsuite fails on macOS 10.14.2 (macOS Mojave, the latest macOS version):
FAIL: tests/pngtest =================== Testing libpng version 1.6.36 with zlib version 1.2.11 libpng version 1.6.36 Copyright (c) 2018 Cosmin Truta Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson Copyright (c) 1996-1997 Andreas Dilger Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. library (10636): libpng version 1.6.36 - December 1, 2018 pngtest (10636): libpng version 1.6.36 - December 1, 2018 Testing ./pngtest.png: Text compression[0]=-1 stereo mode = 1 vpAg = 100 x 100, units = 0 Text compression[0]=0 eXIf type MM, 52 bytes Image width = 91, height = 69 Files ./pngtest.png and pngout.png are of a different size 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)? FAIL libpng FAILS test Default limits: width_max = 1000000 height_max = 1000000 cache_max = 1000 malloc_max = 8000000 FAIL tests/pngtest (exit status: 1)
This was observed as part of Homebrew testing: https://github.com/Homebrew/homebrew-core/pull/34765