diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index 60be26f..913090d 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -197,7 +197,7 @@
         { REQ,      "events/vmscan/mm_vmscan_direct_reclaim_end/enable" },
         { REQ,      "events/vmscan/mm_vmscan_kswapd_wake/enable" },
         { REQ,      "events/vmscan/mm_vmscan_kswapd_sleep/enable" },
-        { REQ,      "events/lowmemorykiller/enable" },
+        { OPT,      "events/lowmemorykiller/enable" },
     } },
     { "regulators",  "Voltage and Current Regulators", 0, {
         { REQ,      "events/regulator/enable" },
diff --git a/cmds/dumpsys/tests/dumpsys_test.cpp b/cmds/dumpsys/tests/dumpsys_test.cpp
index 16fefe6..221572d 100644
--- a/cmds/dumpsys/tests/dumpsys_test.cpp
+++ b/cmds/dumpsys/tests/dumpsys_test.cpp
@@ -73,7 +73,7 @@
     explicit WriteOnFdAction(const std::string& output) : output_(output) {
     }
     virtual Result Perform(const ArgumentTuple& args) {
-        int fd = ::std::tr1::get<0>(args);
+        int fd = ::testing::get<0>(args);
         android::base::WriteStringToFd(output_, fd);
     }
 
diff --git a/cmds/installd/otapreopt.cpp b/cmds/installd/otapreopt.cpp
index 4c75eb5..355fe45 100644
--- a/cmds/installd/otapreopt.cpp
+++ b/cmds/installd/otapreopt.cpp
@@ -88,6 +88,12 @@
               "DEXOPT_MASK unexpected.");
 
 
+template<typename T>
+static constexpr bool IsPowerOfTwo(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  // TODO: assert unsigned. There is currently many uses with signed values.
+  return (x & (x - 1)) == 0;
+}
 
 template<typename T>
 static constexpr T RoundDown(T x, typename std::decay<T>::type n) {
diff --git a/libs/vr/libpdx/service_tests.cpp b/libs/vr/libpdx/service_tests.cpp
index e623abf..938d737 100644
--- a/libs/vr/libpdx/service_tests.cpp
+++ b/libs/vr/libpdx/service_tests.cpp
@@ -51,22 +51,24 @@
 //             method(IoVecMatcher(IoVecArray{{ptr1, size1}, {ptr2, size2}})));
 using IoVecArray = std::vector<iovec>;
 MATCHER_P(IoVecMatcher, iovec_array, "") {
+  auto local_arg = arg;
   for (const iovec& item : iovec_array) {
-    if (arg->iov_base != item.iov_base || arg->iov_len != item.iov_len)
+    if (local_arg->iov_base != item.iov_base || local_arg->iov_len != item.iov_len)
       return false;
-    arg++;
+    local_arg++;
   }
   return true;
 }
 
 using IoVecData = std::vector<std::string>;
 MATCHER_P(IoVecDataMatcher, iovec_data, "") {
+  auto local_arg = arg;
   for (const std::string& item : iovec_data) {
-    std::string data{reinterpret_cast<const char*>(arg->iov_base),
-                     arg->iov_len};
+    std::string data{reinterpret_cast<const char*>(local_arg->iov_base),
+                     local_arg->iov_len};
     if (data != item)
       return false;
-    arg++;
+    local_arg++;
   }
   return true;
 }
diff --git a/vulkan/libvulkan/Android.bp b/vulkan/libvulkan/Android.bp
index b55fa27..a888e6f 100644
--- a/vulkan/libvulkan/Android.bp
+++ b/vulkan/libvulkan/Android.bp
@@ -43,7 +43,6 @@
     ],
 
     cppflags: [
-        "-std=c++14",
         "-Wno-c99-extensions",
         "-Wno-c++98-compat-pedantic",
         "-Wno-exit-time-destructors",