view Python/memmove.c @ 17503:327efb59dbcd legacy-trunk

I am TENTATIVELY checking in Martin von Loewis's patch for the SSL problem reported by Neil Schemenauer on python-dev on 4/12/01, wth subject "Problem with SSL and socketmodule on Debian Potato?". It's tentative because Moshe objected, but Martin rebutted, and Moshe seems unavailable for comments. (Note that with OpenSSL 0.9.6a, I get a lot of compilation warnings for socketmodule.c -- I'm assuming I can safely ignore these until 2.1 is released.)
author Guido van Rossum <guido@python.org>
date Fri, 13 Apr 2001 17:54:04 +0000
parents 6f6f965c5e2d
children
line wrap: on
line source


/* A perhaps slow but I hope correct implementation of memmove */

extern char *memcpy(char *, char *, int);

char *
memmove(char *dst, char *src, int n)
{
	char *realdst = dst;
	if (n <= 0)
		return dst;
	if (src >= dst+n || dst >= src+n)
		return memcpy(dst, src, n);
	if (src > dst) {
		while (--n >= 0)
			*dst++ = *src++;
	}
	else if (src < dst) {
		src += n;
		dst += n;
		while (--n >= 0)
			*--dst = *--src;
	}
	return realdst;
}