From 09fdfda9be3fbc9ec9264c3a1420520ef48e2eb4 Mon Sep 17 00:00:00 2001
From: Justus Winter <justus@sequoia-pgp.org>
Date: Thu, 26 Mar 2020 10:10:21 +0100
Subject: buffered-reader: Fix error handling.

  - Hat tip to Fabian Freyer of Radically Open Security.
---
 buffered-reader/src/file_unix.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'buffered-reader')

diff --git a/buffered-reader/src/file_unix.rs b/buffered-reader/src/file_unix.rs
index 5f6ebb75..69065296 100644
--- a/buffered-reader/src/file_unix.rs
+++ b/buffered-reader/src/file_unix.rs
@@ -134,7 +134,7 @@ impl<'a, C> File<'a, C> {
             mmap(ptr::null_mut(), length, PROT_READ, MAP_PRIVATE,
                  fd, 0)
         };
-        if addr.is_null() {
+        if addr == libc::MAP_FAILED {
             return generic(file, cookie);
         }
 
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