gentoo-overlay/app-text/calibre/files/calibre-2.83.0-lzxd-bounds-error-bug-540596.patch

From f335c8719b224d3ca7a967b6e91cebd5b26684fe Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Sun, 23 Apr 2017 16:13:00 -0700
Subject: [PATCH] Fix bounds error in lzxd_static_init

https://bugs.gentoo.org/show_bug.cgi?id=540596
https://github.com/kovidgoyal/calibre/pull/650

This includes the changes from the following upstream commits:

https://github.com/kyz/libmspack/commit/6a42ddd1d472afeaf0f7da91e16b60ab2063fb92
https://github.com/kyz/libmspack/commit/ce3cc03aa500dd9c0b6b820f9519f6b6b9dede05
---
 src/calibre/utils/lzx/lzxd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/calibre/utils/lzx/lzxd.c b/src/calibre/utils/lzx/lzxd.c
index e683a9e..c531aaa 100644
--- a/src/calibre/utils/lzx/lzxd.c
+++ b/src/calibre/utils/lzx/lzxd.c
@@ -357,11 +357,12 @@ static unsigned char extra_bits[51];
 static void lzxd_static_init(void) {
   int i, j;
 
-  for (i = 0, j = 0; i < 51; i += 2) {
+  for (i = 0, j = 0; i < 50; i += 2) {
     extra_bits[i]   = j; /* 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7... */
     extra_bits[i+1] = j;
     if ((i != 0) && (j < 17)) j++; /* 0,0,1,2,3,4...15,16,17,17,17,17... */
   }
+  extra_bits[50] = 17;
 
   for (i = 0, j = 0; i < 51; i++) {
     position_base[i] = j; /* 0,1,2,3,4,6,8,12,16,24,32,... */
-- 
2.10.2