[Skiboot] [PATCH 2/2] libc/memmove: Correct the buffer overlap condition

[Stewart Smith]

Neelesh Gupta <neelegup at linux.vnet.ibm.com> writes:
> diff --git a/libc/string/memmove.c b/libc/string/memmove.c
> index 3acf1a9..844f300 100644
> --- a/libc/string/memmove.c
> +++ b/libc/string/memmove.c
> @@ -21,15 +21,14 @@ memmove(void *dest, const void *src, size_t n)
>  	int i;
>  
>  	/* Do the buffers overlap in a bad way? */
> -	if (src < dest && src + n >= dest) {
> +	if (src < dest && src + n - 1 >= dest) {
>  		/* Copy from end to start */
>  		cdest = dest + n - 1;
>  		csrc = src + n - 1;
>  		for (i = 0; i < n; i++) {
>  			*cdest-- = *csrc--;
>  		}
> -	}
> -	else {
> +	} else {

Have a test to add?