2014.05.31 19:40 "Re: [Tiff] Inconsistencies in tiff library tool operation", by Bob Friesenhahn
Tiff library version 4.0.3
GCC v. 4.5.1
Valgrind v. 3.6.0
It is important to take note of the zlib and libjpeg versions.
Zlib 1.2.3.X as delivered by Ubuntu Linux causes its own issues since the zlib maintainer thought that performance was more important than issues with consuming some unitialized data. Later zlib seems to be much better with this.
Modern IJG JPEG seems to be pretty good with valgrind but the Turbo JPEG variant uses SSE code/approaches which trigger valgrind complaints.
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/