From: John Hodge <tpg@mutabah.net>
Date: Sun, 23 Oct 2011 03:59:52 +0000 (+0800)
Subject: Kernel - Fixed infinite loop in memmove (exposed by AcessNative's use of SDL)
X-Git-Tag: rel0.14~208
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=1081538c9f2903bec7ad003ab29fadd06bddc7b8;p=tpg%2Facess2.git

Kernel - Fixed infinite loop in memmove (exposed by AcessNative's use of SDL)
---

diff --git a/Kernel/lib.c b/Kernel/lib.c
index 6263dc8a..73b6432e 100644
--- a/Kernel/lib.c
+++ b/Kernel/lib.c
@@ -960,6 +960,9 @@ void *memmove(void *__dest, const void *__src, size_t len)
 	char	*dest = __dest;
 	const char	*src = __src;
 	void	*ret = __dest;
+
+	if( len == 0 || dest == src )
+		return dest;
 	
 	if( (tVAddr)dest > (tVAddr)src + len )
 		return memcpy(dest, src, len);