From b7928e18b14a2bc2aa27f82b80803fdff68c328a Mon Sep 17 00:00:00 2001 From: Brian Foley Date: Wed, 2 Jan 2019 13:09:45 -0800 Subject: [PATCH] sed: Fix backslash parsing for 'w' command arg If there's any whitespace between w and the filename, parse_file_cmd writes to the wrong offset when trying to fix up backslashes. This can be seen in the asan build with busybox sed -e 'w 0\\' Signed-off-by: Brian Foley Signed-off-by: Denys Vlasenko --- editors/sed.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/editors/sed.c b/editors/sed.c index 1054c1302..cddb0c732 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -387,7 +387,7 @@ static int parse_file_cmd(/*sed_cmd_t *sed_cmd,*/ const char *filecmdstr, char * bb_error_msg_and_die("empty filename"); *retval = xstrndup(filecmdstr+start, idx-start+hack+1); if (hack) - (*retval)[idx] = '\\'; + (*retval)[idx-start] = '\\'; return idx; }