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libport: Fixed invalid lvalue accesses in memmove.

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This commit is contained in:
Alexandre Julliard 2006-08-01 19:35:52 +02:00
parent 5d73cfdae8
commit eb2bedc56d
1 changed files with 7 additions and 6 deletions
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13
libs/port/memmove.c
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@ -22,25 +22,26 @@
#include "wine/port.h"
#ifndef HAVE_MEMMOVE
void *memmove( void *dest, const void *src, size_t len )
void *memmove( void *dest, const void *source, size_t len )
{
register char *dst = dest;
register const char *src = source;
/* Use memcpy if not overlapping */
if ((dst + len <= (char *)src) || ((char *)src + len <= dst))
if ((dst + len <= src) || (src + len <= dst))
{
memcpy( dst, src, len );
}
/* Otherwise do it the hard way (FIXME: could do better than this) */
else if (dst < (char *)src)
else if (dst < src)
{
while (len--) *dst++ = *((char *)src)++;
while (len--) *dst++ = *src++;
}
else
{
dst += len - 1;
src = (char *)src + len - 1;
while (len--) *dst-- = *((char *)src)--;
src += len - 1;
while (len--) *dst-- = *src--;
}
return dest;
}