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Fixed overlapping buffer handling.

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svn path=/trunk/; revision=465
This commit is contained in:
Eric Kohl 1999-05-14 13:30:07 +00:00
parent 4251bd8513
commit d2e0015ab7
1 changed files with 26 additions and 10 deletions
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36
reactos/lib/crtdll/string/memmove.c
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@ -3,18 +3,34 @@
void * memmove(void *dest,const void *src,size_t count)
{
char *char_dest = (char *)dest;
char *char_src = (char *)src;
char *char_dest = (char *)dest;
char *char_src = (char *)src;
while(count > 0 )
if ((char_dest <= char_src) || (char_dest >= (char_src+count)))
{
/* non-overlapping buffers */
while(count > 0)
{
*char_dest = *char_src;
char_dest++;
char_src++;
count--;
*char_dest = *char_src;
char_dest++;
char_src++;
count--;
}
}
else
{
/* overlaping buffers */
char_dest = (char *)dest + count - 1;
char_src = (char *)src + count - 1;
return dest;
while(count > 0)
{
*char_dest = *char_src;
char_dest--;
char_src--;
count--;
}
}
return dest;
}