1 files changed, 38 insertions, 0 deletions
diff --git a/media-libs/tiff/files/tiff-4.0.7-hylafax-hack.patch b/media-libs/tiff/files/tiff-4.0.7-hylafax-hack.patch
new file mode 100644
index 000000000000..69158200ac73
--- /dev/null
+++ b/media-libs/tiff/files/tiff-4.0.7-hylafax-hack.patch
@@ -0,0 +1,38 @@
+https://bugs.gentoo.org/612172
+
+From 96bb01f5d834e0b01c0231768c43b8d309aede34 Mon Sep 17 00:00:00 2001
+From: Even Rouault <even.rouault@spatialys.com>
+Date: Tue, 13 Dec 2016 18:15:48 +0000
+Subject: [PATCH] * libtiff/tif_fax3.h: revert change done on 2016-01-09 that
+ made Param member of TIFFFaxTabEnt structure a uint16 to reduce size of the
+ binary. It happens that the Hylafax software uses the tables that follow this
+ typedef (TIFFFaxMainTable, TIFFFaxWhiteTable, TIFFFaxBlackTable), also they
+ are not in a public libtiff header. Raised by Lee Howard. Fixes
+ http://bugzilla.maptools.org/show_bug.cgi?id=2636
+
+---
+ ChangeLog          | 10 ++++++++++
+ libtiff/tif_fax3.h |  6 ++++--
+ 2 files changed, 14 insertions(+), 2 deletions(-)
+
+diff --git a/libtiff/tif_fax3.h b/libtiff/tif_fax3.h
+index e0b2ca6bfc9d..45ce43f1cf2e 100644
+--- a/libtiff/tif_fax3.h
++++ b/libtiff/tif_fax3.h
+@@ -81,10 +81,12 @@ extern void _TIFFFax3fillruns(unsigned char*, uint32*, uint32*, uint32);
+ #define S_MakeUp   11
+ #define S_EOL      12
+ 
++/* WARNING: do not change the layout of this structure as the Halyfax software */
++/* really depends on it. See http://bugzilla.maptools.org/show_bug.cgi?id=2636 */
+ typedef struct {                /* state table entry */
+ 	unsigned char State;    /* see above */
+ 	unsigned char Width;    /* width of code in bits */
+-	uint16 Param;           /* unsigned 16-bit run length in bits */
++	uint32 Param;           /* unsigned 32-bit run length in bits (holds on 16 bit actually, but cannot be changed. See above warning) */
+ } TIFFFaxTabEnt;
+ 
+ extern const TIFFFaxTabEnt TIFFFaxMainTable[];
+-- 
+2.12.0
+