diff --git a/adb/file_sync_client.cpp b/adb/file_sync_client.cpp
index 85aaa61..3a81ce6 100644
--- a/adb/file_sync_client.cpp
+++ b/adb/file_sync_client.cpp
@@ -517,12 +517,6 @@
     if (!sc.SendRequest(ID_RECV, rpath)) return false;
 
     adb_unlink(lpath);
-    const std::string dirpath = adb_dirname(lpath);
-    if (!mkdirs(dirpath.c_str())) {
-        sc.Error("failed to create parent directory '%s': %s", dirpath.c_str(), strerror(errno));
-        return false;
-    }
-
     int lfd = adb_creat(lpath, 0644);
     if (lfd < 0) {
         sc.Error("cannot create '%s': %s", lpath, strerror(errno));
@@ -803,13 +797,14 @@
     return S_ISDIR(mode);
 }
 
-static bool remote_build_list(SyncConnection& sc,
-                              std::vector<copyinfo>* file_list,
-                              const std::string& rpath,
-                              const std::string& lpath) {
+static bool remote_build_list(SyncConnection& sc, std::vector<copyinfo>* file_list,
+                              const std::string& rpath, const std::string& lpath) {
     std::vector<copyinfo> dirlist;
     std::vector<copyinfo> linklist;
-    bool empty_dir = true;
+
+    // Add an entry for the current directory to ensure it gets created before pulling its contents.
+    copyinfo ci(adb_dirname(lpath), adb_dirname(rpath), adb_basename(rpath), S_IFDIR);
+    file_list->push_back(ci);
 
     // Put the files/dirs in rpath on the lists.
     auto callback = [&](unsigned mode, unsigned size, unsigned time, const char* name) {
@@ -817,9 +812,6 @@
             return;
         }
 
-        // We found a child that isn't '.' or '..'.
-        empty_dir = false;
-
         copyinfo ci(lpath, rpath, name, mode);
         if (S_ISDIR(mode)) {
             dirlist.push_back(ci);
@@ -836,13 +828,6 @@
         return false;
     }
 
-    // Add the current directory to the list if it was empty, to ensure that it gets created.
-    if (empty_dir) {
-        copyinfo ci(adb_dirname(lpath), adb_dirname(rpath), adb_basename(rpath), S_IFDIR);
-        file_list->push_back(ci);
-        return true;
-    }
-
     // Check each symlink we found to see whether it's a file or directory.
     for (copyinfo& link_ci : linklist) {
         if (remote_symlink_isdir(sc, link_ci.rpath)) {
diff --git a/crash_reporter/crash_collector_test.cc b/crash_reporter/crash_collector_test.cc
index 90a209d..a386cd1 100644
--- a/crash_reporter/crash_collector_test.cc
+++ b/crash_reporter/crash_collector_test.cc
@@ -74,10 +74,11 @@
 TEST_F(CrashCollectorTest, WriteNewFile) {
   FilePath test_file = test_dir_.path().Append("test_new");
   const char kBuffer[] = "buffer";
-  EXPECT_EQ(strlen(kBuffer),
-            collector_.WriteNewFile(test_file,
-                                    kBuffer,
-                                    strlen(kBuffer)));
+  unsigned int numBytesWritten = collector_.WriteNewFile(
+      test_file,
+      kBuffer,
+      strlen(kBuffer));
+  EXPECT_EQ(strlen(kBuffer), numBytesWritten);
   EXPECT_LT(collector_.WriteNewFile(test_file,
                                     kBuffer,
                                     strlen(kBuffer)), 0);
@@ -94,7 +95,7 @@
 }
 
 TEST_F(CrashCollectorTest, FormatDumpBasename) {
-  struct tm tm = {0};
+  struct tm tm = {};
   tm.tm_sec = 15;
   tm.tm_min = 50;
   tm.tm_hour = 13;
diff --git a/crash_reporter/kernel_collector_test.cc b/crash_reporter/kernel_collector_test.cc
index 015f624..60fd832 100644
--- a/crash_reporter/kernel_collector_test.cc
+++ b/crash_reporter/kernel_collector_test.cc
@@ -49,7 +49,9 @@
  protected:
   void WriteStringToFile(const FilePath &file_path,
                          const char *data) {
-    ASSERT_EQ(strlen(data), base::WriteFile(file_path, data, strlen(data)));
+    unsigned int numBytesWritten =
+        base::WriteFile(file_path, data, strlen(data));
+    ASSERT_EQ(strlen(data), numBytesWritten);
   }
 
   void SetUpSuccessfulCollect();
@@ -284,7 +286,7 @@
   size_t end_pos = filename.find_first_of("\n");
   ASSERT_NE(std::string::npos, end_pos);
   filename = filename.substr(0, end_pos);
-  ASSERT_EQ(0, filename.find(test_crash_directory().value()));
+  ASSERT_EQ(0U, filename.find(test_crash_directory().value()));
   ASSERT_TRUE(base::PathExists(FilePath(filename)));
   std::string contents;
   ASSERT_TRUE(base::ReadFileToString(FilePath(filename), &contents));
diff --git a/crash_reporter/unclean_shutdown_collector_test.cc b/crash_reporter/unclean_shutdown_collector_test.cc
index 56d2704..36372ae 100644
--- a/crash_reporter/unclean_shutdown_collector_test.cc
+++ b/crash_reporter/unclean_shutdown_collector_test.cc
@@ -73,7 +73,9 @@
  protected:
   void WriteStringToFile(const FilePath &file_path,
                          const char *data) {
-    ASSERT_EQ(strlen(data), base::WriteFile(file_path, data, strlen(data)));
+    unsigned int numBytesWritten =
+        base::WriteFile(file_path, data, strlen(data));
+    ASSERT_EQ(strlen(data), numBytesWritten);
   }
 
   UncleanShutdownCollectorMock collector_;
diff --git a/crash_reporter/user_collector_test.cc b/crash_reporter/user_collector_test.cc
index ab94879..16a5cd5 100644
--- a/crash_reporter/user_collector_test.cc
+++ b/crash_reporter/user_collector_test.cc
@@ -101,15 +101,15 @@
       &pid, &signal, &uid, &gid, &exec_name));
   EXPECT_EQ(123456, pid);
   EXPECT_EQ(11, signal);
-  EXPECT_EQ(1000, uid);
-  EXPECT_EQ(2000, gid);
+  EXPECT_EQ(1000U, uid);
+  EXPECT_EQ(2000U, gid);
   EXPECT_EQ("foobar", exec_name);
   EXPECT_TRUE(collector_.ParseCrashAttributes("4321:6:barfoo",
       &pid, &signal, &uid, &gid, &exec_name));
   EXPECT_EQ(4321, pid);
   EXPECT_EQ(6, signal);
-  EXPECT_EQ(-1, uid);
-  EXPECT_EQ(-1, gid);
+  EXPECT_EQ(-1U, uid);
+  EXPECT_EQ(-1U, gid);
   EXPECT_EQ("barfoo", exec_name);
 
   EXPECT_FALSE(collector_.ParseCrashAttributes("123456:11",
@@ -333,8 +333,8 @@
   gid_t gid = 100;
   uid_t uid = 100;
   EXPECT_TRUE(collector_.GetUserInfoFromName("root", &uid, &gid));
-  EXPECT_EQ(0, uid);
-  EXPECT_EQ(0, gid);
+  EXPECT_EQ(0U, uid);
+  EXPECT_EQ(0U, gid);
 }
 
 TEST_F(UserCollectorTest, CopyOffProcFilesBadPath) {
@@ -387,7 +387,9 @@
 
   // maps file is not empty
   const char data[] = "test data";
-  ASSERT_EQ(sizeof(data), base::WriteFile(maps_file, data, sizeof(data)));
+  unsigned int numBytesWritten =
+      base::WriteFile(maps_file, data, sizeof(data));
+  ASSERT_EQ(sizeof(data), numBytesWritten);
   ASSERT_TRUE(base::PathExists(maps_file));
   EXPECT_TRUE(collector_.ValidateProcFiles(container_dir));
 }
diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index 6232f72..53966d5 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -91,6 +91,7 @@
 #define AID_CAMERASERVER  1047  /* cameraserver process */
 #define AID_FIREWALL      1048  /* firewalld process */
 #define AID_TRUNKS        1049  /* trunksd process (TPM daemon) */
+/* Changes to this file must be made in AOSP, *not* in internal branches. */
 
 #define AID_SHELL         2000  /* adb and debug shell user */
 #define AID_CACHE         2001  /* cache access */
diff --git a/liblog/tests/libc_test.cpp b/liblog/tests/libc_test.cpp
index 9dd6f03..3d58147 100644
--- a/liblog/tests/libc_test.cpp
+++ b/liblog/tests/libc_test.cpp
@@ -14,126 +14,9 @@
  * limitations under the License.
  */
 
-#include <fcntl.h>
-#include <sys/cdefs.h>
-
 #include <gtest/gtest.h>
 
-// Should be in bionic test suite, *but* we are using liblog to confirm
-// end-to-end logging, so let the overly cute oedipus complex begin ...
-#include "../../../../bionic/libc/bionic/libc_logging.cpp" // not Standalone
-#define _ANDROID_LOG_H // Priorities redefined
-#define _LIBS_LOG_LOG_H // log ids redefined
-typedef unsigned char log_id_t; // log_id_t missing as a result
-#define _LIBS_LOG_LOG_READ_H // log_time redefined
-
-#include <log/log.h>
-#include <log/logger.h>
-#include <log/log_read.h>
-
-TEST(libc, __libc_android_log_event_int) {
-    struct logger_list *logger_list;
-
-    pid_t pid = getpid();
-
-    ASSERT_TRUE(NULL != (logger_list = android_logger_list_open(
-        LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 1000, pid)));
-
-    struct timespec ts;
-    clock_gettime(CLOCK_MONOTONIC, &ts);
-    int value = ts.tv_nsec;
-
-    __libc_android_log_event_int(0, value);
-    usleep(1000000);
-
-    int count = 0;
-
-    for (;;) {
-        log_msg log_msg;
-        if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-            break;
-        }
-
-        ASSERT_EQ(log_msg.entry.pid, pid);
-
-        if ((log_msg.entry.len != (4 + 1 + 4))
-         || ((int)log_msg.id() != LOG_ID_EVENTS)) {
-            continue;
-        }
-
-        char *eventData = log_msg.msg();
-
-        int incoming = (eventData[0] & 0xFF) |
-                      ((eventData[1] & 0xFF) << 8) |
-                      ((eventData[2] & 0xFF) << 16) |
-                      ((eventData[3] & 0xFF) << 24);
-
-        if (incoming != 0) {
-            continue;
-        }
-
-        if (eventData[4] != EVENT_TYPE_INT) {
-            continue;
-        }
-
-        incoming = (eventData[4 + 1 + 0] & 0xFF) |
-                  ((eventData[4 + 1 + 1] & 0xFF) << 8) |
-                  ((eventData[4 + 1 + 2] & 0xFF) << 16) |
-                  ((eventData[4 + 1 + 3] & 0xFF) << 24);
-
-        if (incoming == value) {
-            ++count;
-        }
-    }
-
-    EXPECT_EQ(1, count);
-
-    android_logger_list_close(logger_list);
-}
-
-TEST(libc, __libc_fatal_no_abort) {
-    struct logger_list *logger_list;
-
-    pid_t pid = getpid();
-
-    ASSERT_TRUE(NULL != (logger_list = android_logger_list_open(
-        (log_id_t)LOG_ID_CRASH, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 1000, pid)));
-
-    char b[80];
-    struct timespec ts;
-    clock_gettime(CLOCK_MONOTONIC, &ts);
-
-    __libc_fatal_no_abort("%u.%09u", (unsigned)ts.tv_sec, (unsigned)ts.tv_nsec);
-    snprintf(b, sizeof(b),"%u.%09u", (unsigned)ts.tv_sec, (unsigned)ts.tv_nsec);
-    usleep(1000000);
-
-    int count = 0;
-
-    for (;;) {
-        log_msg log_msg;
-        if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-            break;
-        }
-
-        ASSERT_EQ(log_msg.entry.pid, pid);
-
-        if ((int)log_msg.id() != LOG_ID_CRASH) {
-            continue;
-        }
-
-        char *data = log_msg.msg();
-
-        if ((*data == ANDROID_LOG_FATAL)
-                && !strcmp(data + 1, "libc")
-                && !strcmp(data + 1 + strlen(data + 1) + 1, b)) {
-            ++count;
-        }
-    }
-
-    EXPECT_EQ(1, count);
-
-    android_logger_list_close(logger_list);
-}
+#include <stdio.h>
 
 TEST(libc, __pstore_append) {
     FILE *fp;