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[video_subr] Use memmove() for overlapping memory copy

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Michael Brown
2017-03-22 15:13:06 +02:00
parent 75bb948008
commit 7495813792
1 changed files with 1 additions and 1 deletions
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2
src/arch/x86/core/video_subr.c
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@@ -57,7 +57,7 @@ static void video_scroll(void)
{ {
int i; 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) for (i = (LINES - 1) * COLS * 2; i < LINES * COLS * 2; i += 2)
vidmem[i] = ' '; vidmem[i] = ' ';
} }