当我切换到发布构建配置时，NSURLSessionDataTaskcompletionHandler不再执行

Question

我构建了一个简单的命令行工具，它使用 NSURLSessionDataTask 获取一些数据。现在我已经完成编码，我发现当我切换到 Xcode 中的发布构建配置时，可执行文件挂起。我正在使用 while 循环等待 NSURLSessionData finishHandler 完成。 while 循环适用于 Debug，但不适用于 Release。相反，如果我使用 [NSThread sleepForTimeInterval:2.0f] 暂停代码以等待completionHandler 完成，则在发布和调试中一切正常，但我更喜欢使用 while 循环，因为它更快、更符合逻辑。

这是相关代码：

// Configure Session
NSURLSessionConfiguration *config = [NSURLSessionConfiguration ephemeralSessionConfiguration];
// Authentication for the session
NSString *auth = [[[NSString stringWithFormat:@"%@:%@",cpanelUser, WxWaPpIUPA] dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0];
config.HTTPAdditionalHeaders = @{@"Authorization":[NSString stringWithFormat:@"Basic %@",auth]};
NSURLSession *session = [NSURLSession sessionWithConfiguration:config];

// Run Data Task
__block BOOL taskComplete = NO;
NSURLSessionDataTask *task = [session dataTaskWithURL:urlComponents.URL
                                        completionHandler:
    ^(NSData *data, NSURLResponse *response, NSError *error) {
    
    if(error) {
        // *HTTP response failed
        NSInteger statusCode = [(NSHTTPURLResponse *)response statusCode];
        [result addEntriesFromDictionary:queryReturn(EMAIL_TYPE_ERROR, [NSString stringWithFormat:@"There was a connection issue with the session data task.<br><br>Error: %@ HTTP Status Code for the <a href='%@'>URL</a> requested: %li.",error,urlComponents.URL,statusCode])];
    } else {
        NSError *jsonError;
        NSDictionary *jsonObject = (NSDictionary *)[NSJSONSerialization JSONObjectWithData:data
        options:NSJSONReadingAllowFragments
          error: &jsonError];
        
        if(!jsonObject){
            // *JSON parsing Error
            [result addEntriesFromDictionary:queryReturn(EMAIL_TYPE_ERROR, [NSString stringWithFormat:@"There was an error while parsing the JSON data returned from cPanel.<br><br>Error: %@",jsonError])];
        } else {
            if([jsonObject[@"cpanelresult"] objectForKey:@"error"] != nil) {
                // *cPanel API returned an Error
                NSString *cpanelError = [NSString stringWithFormat:@"%@",[jsonObject[@"cpanelresult"] objectForKey:@"error"]];
                if(verbose) NSLog(@"cPanel API 2 Error: %@\n", cpanelError);
                [result addEntriesFromDictionary:queryReturn(EMAIL_TYPE_ERROR, [NSString stringWithFormat:@"cPanel API 2 returned an error while executing function '%@'.<br><br>Error: %@",funct, cpanelError])];
            } else {
                [result addEntriesFromDictionary:jsonObject];
            }
        }
    }
    taskComplete = YES;
}];
[task resume];

// Wait for task to complete
while(!taskComplete);
//[NSThread sleepForTimeInterval:2.0f];