From 8254de765d80a750898de67e61dcc627dceaf80f Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 2 Jun 2011 17:07:40 -0400
Subject: [PATCH] Fix windows file segment mappings

Instead of mapping enough bytes for each segment, we were failing to
take into account the slop created by rounding the segment position
down to the nearest page.

Should fix bug 3142394 found by Sebastian Hahn.
---
 buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/buffer.c b/buffer.c
index d6ecb81a..0a0be15b 100644
--- a/buffer.c
+++ b/buffer.c
@@ -2840,7 +2840,7 @@ evbuffer_add_file_segment(struct evbuffer *buf,
 			FILE_MAP_READ,
 			offset_rounded >> 32,
 			offset_rounded & 0xfffffffful,
-			length);
+			length + offset_remaining);
 		if (data == NULL) {
 			mm_free(chain);
 			goto err;