From f258e9be42bf5dd949eaed3b13c2583b35762576 Mon Sep 17 00:00:00 2001
From: kenny <hbhpeng@163.com>
Date: Fri, 28 Apr 2017 14:56:38 +0800
Subject: [PATCH] on a 32bit machine,long long type transfer to NSInteger may
 become negative. e.g. (NSInteger)9223372036854775807

---
 SDWebImage/SDWebImageDownloaderOperation.m | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/SDWebImage/SDWebImageDownloaderOperation.m b/SDWebImage/SDWebImageDownloaderOperation.m
index df1366e1..bcbd8312 100644
--- a/SDWebImage/SDWebImageDownloaderOperation.m
+++ b/SDWebImage/SDWebImageDownloaderOperation.m
@@ -257,7 +257,8 @@ didReceiveResponse:(NSURLResponse *)response
     
     //'304 Not Modified' is an exceptional one
     if (![response respondsToSelector:@selector(statusCode)] || (((NSHTTPURLResponse *)response).statusCode < 400 && ((NSHTTPURLResponse *)response).statusCode != 304)) {
-        NSInteger expected = response.expectedContentLength > 0 ? (NSInteger)response.expectedContentLength : 0;
+        NSInteger expected = (NSInteger)response.expectedContentLength;
+        expected = expected > 0 ? expected : 0;
         self.expectedSize = expected;
         for (SDWebImageDownloaderProgressBlock progressBlock in [self callbacksForKey:kProgressCallbackKey]) {
             progressBlock(0, expected, self.request.URL);