update engine: 32- and 64-bit compile

src/platform/update_engine/test_utils.cc

 // Copyright (c) 2009 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.
 
 #include "update_engine/test_utils.h"
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ skipping 39 matching lines @@
   CHECK_LT(r, static_cast<ssize_t>(buf.size()));
   buf.resize(r);
   string ret;
   ret.insert(ret.begin(), buf.begin(), buf.end());
   return ret;
 }
 
 std::vector<char> GzipCompressData(const std::vector<char>& data) {
   const char fname[] = "/tmp/GzipCompressDataTemp";
   if (!WriteFileVector(fname, data)) {
-    system((string("rm ") + fname).c_str());
+    EXPECT_EQ(0, system((string("rm ") + fname).c_str()));
     return vector<char>();
   }
-  system((string("cat ") + fname + "|gzip>" + fname + ".gz").c_str());
-  system((string("rm ") + fname).c_str());
+  EXPECT_EQ(0, system((string("cat ") + fname + "|gzip>" +
+                       fname + ".gz").c_str()));
+  EXPECT_EQ(0, system((string("rm ") + fname).c_str()));
   vector<char> ret;
   EXPECT_TRUE(utils::ReadFile(string(fname) + ".gz", &ret));
-  system((string("rm ") + fname + ".gz").c_str());
+  EXPECT_EQ(0, system((string("rm ") + fname + ".gz").c_str()));
   return ret;
 }
 
 vector<char> GenerateSampleMbr() {
   // This is the actual MBR from my dev machine. Partition 1 (the first)
   // is currently marked bootable
   char mbr[512] = {
     0xeb, 0x48, 0x90, 0x10, 0x8e, 0xd0, 0xbc, 0x00,
     0xb0, 0xb8, 0x00, 0x00, 0x8e, 0xd8, 0x8e, 0xc0,
     0xfb, 0xbe, 0x00, 0x7c, 0xbf, 0x00, 0x06, 0xb9,
@@ skipping 185 matching lines @@
   EXPECT_TRUE(expected_paths.empty());
   if (!expected_paths.empty()) {
     for (set<string>::const_iterator it = expected_paths.begin();
          it != expected_paths.end(); ++it) {
       LOG(INFO) << "extra path: " << *it;
     }
   }
 }
 
 }  // namespace chromeos_update_engine