$OpenBSD: patch-src_lib-mail_rfc822-parser_c,v 1.1 2008/07/21 09:33:18 brad Exp $
--- src/lib-mail/rfc822-parser.c.orig	Mon Jul 21 01:54:49 2008
+++ src/lib-mail/rfc822-parser.c	Mon Jul 21 01:55:24 2008
@@ -261,6 +261,8 @@ int rfc822_parse_phrase(struct rfc822_parser_context *
 	   obs-phrase = word *(word / "." / CFWS)
 	*/
 
+	if (ctx->data == ctx->end)
+		return 0;
 	if (*ctx->data == '.')
 		return -1;
 
