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prevent buffer underrun reads, ok bsiegert@

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tg 2009-11-22 13:49:04 +00:00
parent 2094e3f25c
commit ccc6f6de86
1 changed files with 2 additions and 2 deletions
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4
eval.c
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@ -22,7 +22,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.73 2009/11/21 23:23:17 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.74 2009/11/22 13:49:04 tg Exp $");
/*
* string expansion
@ -1173,7 +1173,7 @@ trimsub(char *str, char *pat, int how)
goto trimsub_match;
if (UTFMODE) {
char *op = p;
while ((*--p & 0xC0) == 0x80)
while ((p-- > str) && ((*p & 0xC0) == 0x80))
;
if ((p < str) || (p + utf_ptradj(p) != op))
p = op - 1;