MemorySanitizer: improve the udev dynamic loading hack.

device/udev_linux/udev0_loader.cc

 // Copyright 2014 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 "device/udev_linux/udev0_loader.h"
 
 #include "library_loaders/libudev0.h"
 
 namespace device {
 
 Udev0Loader::Udev0Loader() {
 }
 
 Udev0Loader::~Udev0Loader() {
 }
 
 bool Udev0Loader::Init() {
   if (lib_loader_)
     return lib_loader_->loaded();
   lib_loader_.reset(new LibUdev0Loader);
+#if defined(MEMORY_SANITIZER)
+  // Temporary hack: rely on the symlink to pick up whichever *instrumented*
+  // version of libudev we have, be it libudev0 or libudev1. crbug.com/437464
+  // TODO(earthdok): Remove this hack after upgrading our LKGR builders.
+  return lib_loader_->Load("libudev.so");
+#else
   return lib_loader_->Load("libudev.so.0");
+#endif
 }
 
 const char* Udev0Loader::udev_device_get_action(udev_device* udev_device) {
   return lib_loader_->udev_device_get_action(udev_device);
 }
 
 const char* Udev0Loader::udev_device_get_devnode(udev_device* udev_device) {
   return lib_loader_->udev_device_get_devnode(udev_device);
 }
 
@@ skipping 124 matching lines @@
 
 void Udev0Loader::udev_set_log_priority(struct udev* udev, int priority) {
   return lib_loader_->udev_set_log_priority(udev, priority);
 }
 
 void Udev0Loader::udev_unref(udev* udev) {
   lib_loader_->udev_unref(udev);
 }
 
 }  // namespace device