Known bugs in libpng version 1.2.2beta2
1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
reading interlaced PNG files, when assembler code is enabled.
STATUS: Under investigation. The change to pnggccrd.c in libpng-1.2.1
fixed a problem under FreeBSD but not the problem with NetBSD.