From: Liu Aleaxander <Aleaxander@gmail.com>
Date: Tue, 15 Mar 2011 20:55:09 +0000 (+0000)
Subject: elflink: handle the NULL return of edit_cmdline
X-Git-Tag: syslinux-5.00-pre1~81
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1c5f52052c2452c159498fb1beb941d3b40d4661;p=platform%2Fupstream%2Fsyslinux.git

elflink: handle the NULL return of edit_cmdline

When use ctrl-c to cancle the current input, the edit_cmdline
function will return a NULL string. While, the called didn't
handle that case, and an error would be happened.

Signed-off-by: Liu Aleaxander <Aleaxander@gmail.com>
Signed-off-by: Matt Fleming <matt.fleming@linux.intel.com>
---

diff --git a/com32/elflink/ldlinux/ldlinux.c b/com32/elflink/ldlinux/ldlinux.c
index 9c5e248..5ebbd7f 100644
--- a/com32/elflink/ldlinux/ldlinux.c
+++ b/com32/elflink/ldlinux/ldlinux.c
@@ -18,6 +18,8 @@ static void enter_cmdline(void)
 	/* Enter endless command line prompt, should support "exit" */
 	while (1) {
 		cmdline = edit_cmdline("syslinux$", 1, NULL, NULL);
+		if (!cmdline)
+			continue;
 		/* feng: give up the aux check here */
 		//aux = list_entry(cli_history_head.next, typeof(*aux), list);
 		//if (strcmp(aux->command, cmdline)) {