From d0989bed226578a8f37ca90c78abc97abafb9794 Mon Sep 17 00:00:00 2001
From: Mans Rullgard <mans@mansr.com>
Date: Sat, 4 Jun 2011 13:36:35 +0100
Subject: Fix error check in av_file_map()

On failure, mmap() returns MAP_FAILED, which may or may not be -1.

Signed-off-by: Mans Rullgard <mans@mansr.com>
---
 libavutil/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libavutil/file.c')

diff --git a/libavutil/file.c b/libavutil/file.c
index 3dcce7c2f8..f0e48b5b2f 100644
--- a/libavutil/file.c
+++ b/libavutil/file.c
@@ -75,7 +75,7 @@ int av_file_map(const char *filename, uint8_t **bufptr, size_t *size,
 
 #if HAVE_MMAP
     ptr = mmap(NULL, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
-    if ((int)(ptr) == -1) {
+    if (ptr == MAP_FAILED) {
         err = AVERROR(errno);
         av_strerror(err, errbuf, sizeof(errbuf));
         av_log(&file_log_ctx, AV_LOG_ERROR, "Error occurred in mmap(): %s\n", errbuf);
-- 
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