prevent buffer underrun reads, ok bsiegert@
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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; | ||||
|   | ||||
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