Explicitly use the ULL suffix to specify a large constant.

src/platform/vboot_reference/tests/big_kernel_tests.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Tests if firmware image library deals with very large firmware. This
  * is a quick and dirty test for detecting integer overflow issues.
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "file_keys.h"
 #include "kernel_image.h"
 #include "rsa_utility.h"
 #include "test_common.h"
 #include "utility.h"
 
 /* Choose a kernel size greater than the range of 32-bits unsigned. */
-#define BIG_KERNEL_SIZE ((uint64_t) 0x100000000)
+#define BIG_KERNEL_SIZE ((uint64_t) 0x100000000ULL)
 
 #define FIRMWARE_KEY_BASE_NAME "testkeys/key_rsa2048"
 #define KERNEL_KEY_BASE_NAME "testkeys/key_rsa1024"
 
 const char* kFirmwareKeyPublicFile = FIRMWARE_KEY_BASE_NAME ".keyb";
 const char* kFirmwareKeyFile = FIRMWARE_KEY_BASE_NAME ".pem";
 const char* kKernelKeyPublicFile = KERNEL_KEY_BASE_NAME ".keyb";
 const char* kKernelKeyFile = KERNEL_KEY_BASE_NAME ".pem";
 
 int BigKernelTest() {
@@ skipping 37 matching lines @@
 }
 
 int main(int argc, char* argv[1])
 {
   int error_code = 0;
   error_code = BigKernelTest();
   if (!gTestSuccess)
     error_code = 255;
   return error_code;
 }