2016.11.11 22:22 "Re: [Tiff] Global variables in LibTIFF", by Bob Friesenhahn

Seems someone proposed a related patch 6 years ago...: http://bugzilla.maptools.org/show_bug.cgi?id=2255

This patch has good ideas (and covers more than the error/warning handlers) but it is against libtiff 3.9.4. Libtiff's error reporting/handling was updated for 4.X.

Bob
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Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/