Bug 557225 - Fix TryServer failures. r=cjones r=josh

ipc/chromium/src/base/process_util_mac.mm

@@ -49,15 +49,43 @@ bool LaunchApp(const std::vector<std::string>& argv,
   SetAllFDsToCloseOnExec();
 
 #if defined(CHROMIUM_MOZILLA_BUILD)
-    for (environment_map::const_iterator it = env_vars_to_set.begin();
-         it != env_vars_to_set.end(); ++it) {
-      if (setenv(it->first.c_str(), it->second.c_str(), 1/*overwrite*/))
-        exit(127);
+  // Copy _NSGetEnviron() to a new char array and add the variables
+  // in env_vars_to_set.
+  // Existing variables are overwritten by env_vars_to_set.
+  int pos = 0;
+  environment_map combined_env_vars = env_vars_to_set;
+  while((*_NSGetEnviron())[pos] != NULL) {
+    std::string varString = (*_NSGetEnviron())[pos];
+    std::string varName = varString.substr(0, varString.find_first_of('='));
+    std::string varValue = varString.substr(varString.find_first_of('=') + 1);
+    if (combined_env_vars.find(varName) == combined_env_vars.end()) {
+      combined_env_vars[varName] = varValue;
     }
+    pos++;
+  }
+  int varsLen = combined_env_vars.size() + 1;
+
+  char** vars = new char*[varsLen];
+  int i = 0;
+  for (environment_map::const_iterator it = combined_env_vars.begin();
+       it != combined_env_vars.end(); ++it) {
+    std::string entry(it->first);
+    entry += "=";
+    entry += it->second;
+    vars[i] = strdup(entry.c_str());
+    i++;
+  }
+  vars[i] = NULL;
 #endif
 
   posix_spawn_file_actions_t file_actions;
   if (posix_spawn_file_actions_init(&file_actions) != 0) {
+#if defined(CHROMIUM_MOZILLA_BUILD)
+    for(int j = 0; j < varsLen; j++) {
+      free(vars[j]);
+    }  
+    delete[] vars;
+#endif
     return false;
   }
 
@@ -77,18 +105,36 @@ bool LaunchApp(const std::vector<std::string>& argv,
       if (posix_spawn_file_actions_adddup2(&file_actions, src_fd, dest_fd) != 0)
           {
         posix_spawn_file_actions_destroy(&file_actions);
+#if defined(CHROMIUM_MOZILLA_BUILD)
+        for(int j = 0; j < varsLen; j++) {
+          free(vars[j]);
+        }  
+        delete[] vars;
+#endif
         return false;
       }
     }
   }
 
+
   int pid = 0;
   int spawn_succeeded = (posix_spawnp(&pid,
                                       argv_copy[0],
                                       &file_actions,
                                       NULL,
                                       argv_copy,
+#if defined(CHROMIUM_MOZILLA_BUILD)
+                                      vars) == 0);
+#else
                                       *_NSGetEnviron()) == 0);
+#endif
+
+#if defined(CHROMIUM_MOZILLA_BUILD)
+  for(int j = 0; j < varsLen; j++) {
+    free(vars[j]);
+  }  
+  delete[] vars;
+#endif
 
   posix_spawn_file_actions_destroy(&file_actions);
 

testing/xpcshell/runxpcshelltests.py

@@ -160,7 +160,7 @@ class XPCShellTests(object):
     elif sys.platform in ('os2emx', 'os2knix'):
       os.environ["BEGINLIBPATH"] = self.xrePath + ";" + self.env["BEGINLIBPATH"]
       os.environ["LIBPATHSTRICT"] = "T"
-    elif sys.platform == 'osx':
+    elif sys.platform == 'osx' or sys.platform == "darwin":
       self.env["DYLD_LIBRARY_PATH"] = self.xrePath
     else: # unix or linux?
       self.env["LD_LIBRARY_PATH"] = self.xrePath