Fix TODO by removing use of getwd() in nacl-spawn

ports/nacl-spawn/nacl_spawn.cc

 // Copyright (c) 2014 The Native Client Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Emulates spawning/waiting process by asking JavaScript to do so.
 
 // Include quoted spawn.h first so we can build in the presence of an installed
 // copy of nacl-spawn.
 #define IN_NACL_SPAWN_CC
 #include "spawn.h"
@@ skipping 35 matching lines @@
 extern int nacl_spawn_ppid;
 
 struct NaClSpawnReply {
   pthread_mutex_t mu;
   pthread_cond_t cond;
 
   pp::VarDictionary result;
 };
 
 static std::string GetCwd() {
-  char cwd[PATH_MAX + 1];
-  // TODO(hamaji): Remove this #if and always call getcwd.
-  // https://code.google.com/p/naclports/issues/detail?id=109

[binji, 2014/12/11 23:19:57]

reference this bug?

-#if defined(__GLIBC__)
-  if (!getwd(cwd))
-#else
-  if (!getcwd(cwd, PATH_MAX))
-#endif
+  char cwd[PATH_MAX] = ".";
+  if (!getcwd(cwd, PATH_MAX)) {
+    NACL_LOG("getcwd failed: %s\n", strerror(errno));
     assert(0);
+  }
   return cwd;
 }
 
 static std::string GetAbsPath(const std::string& path) {
   assert(!path.empty());
   if (path[0] == '/')
     return path;
   else
     return GetCwd() + '/' + path;
 }
@@ skipping 737 matching lines @@
   return spawnve_impl(P_OVERLAY, path, argv, envp);
 }
 
 int execlpe(const char *path, const char *arg, ...) {  /* char* const envp[] */
   VARG_TO_ARGV_ENVP;
   // TODO(bradnelson): Limit path resolution to 'p' variants.
   return spawnve_impl(P_OVERLAY, path, argv, envp);
 }
 
 };  // extern "C"