From bb71b14d80bde8484ae63ee09d969c72d8615e0c Mon Sep 17 00:00:00 2001 From: Nickolai Zeldovich Date: Mon, 7 Jan 2013 22:28:05 -0300 Subject: [media] drivers/media/pci: use memmove for overlapping regions Change several memcpy() to memmove() in cases when the regions are definitely overlapping; memcpy() of overlapping regions is undefined behavior in C and can produce different results depending on the compiler, the memcpy implementation, etc. Cc: Andy Walls Signed-off-by: Nickolai Zeldovich Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/cx18/cx18-vbi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/pci/cx18/cx18-vbi.c') diff --git a/drivers/media/pci/cx18/cx18-vbi.c b/drivers/media/pci/cx18/cx18-vbi.c index 6d3121f..add9964 100644 --- a/drivers/media/pci/cx18/cx18-vbi.c +++ b/drivers/media/pci/cx18/cx18-vbi.c @@ -84,7 +84,7 @@ static void copy_vbi_data(struct cx18 *cx, int lines, u32 pts_stamp) (the max size of the VBI data is 36 * 43 + 4 bytes). So in this case we use the magic number 'ITV0'. */ memcpy(dst + sd, "ITV0", 4); - memcpy(dst + sd + 4, dst + sd + 12, line * 43); + memmove(dst + sd + 4, dst + sd + 12, line * 43); size = 4 + ((43 * line + 3) & ~3); } else { memcpy(dst + sd, "itv0", 4); -- cgit v1.1