AU: Delta Diff Generator

src/platform/update_engine/subprocess.cc

 // Copyright (c) 2009 The Chromium 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/subprocess.h"
 #include <stdlib.h>
 #include <string.h>
 #include <string>
 #include <vector>
 #include "chromeos/obsolete_logging.h"
@@ skipping 62 matching lines @@
 }
 
 void Subprocess::CancelExec(uint32 tag) {
   if (callback_records_[tag].callback) {
     callback_records_[tag].callback = NULL;
   }
 }
 
 bool Subprocess::SynchronousExec(const std::vector<std::string>& cmd,
                                  int* return_code) {
-  GError *err;
+  GError *err = NULL;
   scoped_array<char *> argv(new char*[cmd.size() + 1]);
   for (unsigned int i = 0; i < cmd.size(); i++) {
     argv[i] = strdup(cmd[i].c_str());
   }
   argv[cmd.size()] = NULL;
   char *argp[1];
   argp[0] = NULL;
 
   bool success = g_spawn_sync(NULL,  // working directory
                               argv.get(),
                               argp,
                               static_cast<GSpawnFlags>(NULL),  // flags
                               NULL,  // child setup function
                               NULL,  // data for child setup function
                               NULL,  // return location for stdout
                               NULL,  // return location for stderr
                               return_code,
                               &err);
   FreeArgv(argv.get());
+  if (err)
+    LOG(INFO) << "err is: " << err->code << ", " << err->message;
   return success;
 }
 
 Subprocess* Subprocess::subprocess_singleton_ = NULL;
 
 }  // namespace chromeos_update_engine