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Fix bounds error in lzxd_static_init

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This includes the changes from the following upstream commits:

6a42ddd1d4
ce3cc03aa5
This commit is contained in:
Zac Medico 2017-04-23 16:13:00 -07:00
parent 94c05cd01c
commit f335c8719b
1 changed files with 2 additions and 1 deletions
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3
src/calibre/utils/lzx/lzxd.c
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@ -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,... */