From: Michael Brown <mcb30@ipxe.org>
Date: Wed, 22 Mar 2017 13:13:06 +0000 (+0200)
Subject: [video_subr] Use memmove() for overlapping memory copy
X-Git-Tag: v1.20.1~259
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7495813792c13f8095053bffe7b362e09df99d83;p=thirdparty%2Fipxe.git

[video_subr] Use memmove() for overlapping memory copy

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---

diff --git a/src/arch/x86/core/video_subr.c b/src/arch/x86/core/video_subr.c
index 3f701bd96..f5cc4cdd4 100644
--- a/src/arch/x86/core/video_subr.c
+++ b/src/arch/x86/core/video_subr.c
@@ -57,7 +57,7 @@ static void video_scroll(void)
 {
 	int i;
 
-	memcpy(vidmem, vidmem + COLS * 2, (LINES - 1) * COLS * 2);
+	memmove(vidmem, vidmem + COLS * 2, (LINES - 1) * COLS * 2);
 	for (i = (LINES - 1) * COLS * 2; i < LINES * COLS * 2; i += 2)
 		vidmem[i] = ' ';
 }