diff --git a/deps/uv/.gitignore b/deps/uv/.gitignore
index 7536abd54970a2..c132987917623e 100644
--- a/deps/uv/.gitignore
+++ b/deps/uv/.gitignore
@@ -42,7 +42,7 @@ Makefile.in
 /android-toolchain
 
 /out/
-/build/gyp
+/build/
 
 /test/.libs/
 /test/run-tests
diff --git a/deps/uv/AUTHORS b/deps/uv/AUTHORS
index 2f93bd8dffefa4..a8b50f6209d7a0 100644
--- a/deps/uv/AUTHORS
+++ b/deps/uv/AUTHORS
@@ -356,3 +356,9 @@ hitesh <sainihitesh.scientist@gmail.com>
 Svante Signell <svante.signell@gmail.com>
 Samuel Thibault <sthibault@debian.org>
 Jeremy Studer <studerj1.mail@gmail.com>
+damon-kwok <563066990@qq.com>
+Damon Kwok <MedusaIDE@outlook.com>
+Ashe Connor <ashe@kivikakk.ee>
+Rick <lcw0622@163.com>
+Ivan Krylov <krylov.r00t@gmail.com>
+Michael Meier <michael.meier@leica-geosystems.com>
diff --git a/deps/uv/CMakeLists.txt b/deps/uv/CMakeLists.txt
index 8cd862715aef9d..9f1c0587a98060 100644
--- a/deps/uv/CMakeLists.txt
+++ b/deps/uv/CMakeLists.txt
@@ -15,6 +15,7 @@ set(uv_sources
     src/fs-poll.c
     src/idna.c
     src/inet.c
+    src/strscpy.c
     src/threadpool.c
     src/timer.c
     src/uv-common.c
@@ -116,6 +117,7 @@ set(uv_test_sources
     test/test-socket-buffer-size.c
     test/test-spawn.c
     test/test-stdio-over-pipes.c
+    test/test-strscpy.c
     test/test-tcp-alloc-cb-fail.c
     test/test-tcp-bind-error.c
     test/test-tcp-bind6-error.c
@@ -208,7 +210,11 @@ if(WIN32)
   list(APPEND uv_test_sources src/win/snprintf.c test/runner-win.c)
 else()
   list(APPEND uv_defines _FILE_OFFSET_BITS=64 _LARGEFILE_SOURCE)
-  list(APPEND uv_libraries pthread)
+  if(NOT CMAKE_SYSTEM_NAME STREQUAL "Android")
+    # Android has pthread as part of its c library, not as a separate 
+    # libpthread.so.
+    list(APPEND uv_libraries pthread)
+  endif()
   list(APPEND uv_sources
        src/unix/async.c
        src/unix/core.c
diff --git a/deps/uv/ChangeLog b/deps/uv/ChangeLog
index 3376481d62d1f0..f7881e6bbc4f92 100644
--- a/deps/uv/ChangeLog
+++ b/deps/uv/ChangeLog
@@ -1,3 +1,36 @@
+2018.12.17, Version 1.24.1 (Stable), 274f2bd3b70847cadd9a3965577a87e666ab9ac3
+
+Changes since version 1.24.0:
+
+* test: fix platform_output test on cygwin (damon-kwok)
+
+* gitignore: ignore build/ directory (Damon Kwok)
+
+* unix: zero epoll_event before use (Ashe Connor)
+
+* darwin: use runtime check for file cloning (Ben Noordhuis)
+
+* doc: replace deprecated build command on macOS (Rick)
+
+* warnings: fix code that emits compiler warnings (Jameson Nash)
+
+* doc: clarify expected memory management strategy (Ivan Krylov)
+
+* test: add uv_inet_ntop(AF_INET) coverage (Ben Noordhuis)
+
+* unix: harden string copying, introduce strscpy() (Ben Noordhuis)
+
+* linux: get rid of strncpy() call (Ben Noordhuis)
+
+* aix: get rid of strcat() calls (Ben Noordhuis)
+
+* aix: fix data race in uv_fs_event_start() (Ben Noordhuis)
+
+* win: fs: fix `FILE_FLAG_NO_BUFFERING` for writes (Joran Dirk Greef)
+
+* build: don't link against -lpthread on Android (Michael Meier)
+
+
 2018.11.14, Version 1.24.0 (Stable), 2d427ee0083d1baf995df4ebf79a3f8890e9a3e1
 
 Changes since version 1.23.2:
diff --git a/deps/uv/Makefile.am b/deps/uv/Makefile.am
index 098d2f57931d18..f9c9c9a05d14f3 100644
--- a/deps/uv/Makefile.am
+++ b/deps/uv/Makefile.am
@@ -32,6 +32,8 @@ libuv_la_SOURCES = src/fs-poll.c \
                    src/idna.c \
                    src/inet.c \
                    src/queue.h \
+                   src/strscpy.c \
+                   src/strscpy.h \
                    src/threadpool.c \
                    src/timer.c \
                    src/uv-data-getter-setters.c \
@@ -241,6 +243,7 @@ test_run_tests_SOURCES = test/blackhole-server.c \
                          test/test-socket-buffer-size.c \
                          test/test-spawn.c \
                          test/test-stdio-over-pipes.c \
+                         test/test-strscpy.c \
                          test/test-tcp-alloc-cb-fail.c \
                          test/test-tcp-bind-error.c \
                          test/test-tcp-bind6-error.c \
diff --git a/deps/uv/README.md b/deps/uv/README.md
index b24b722612edf3..fb5971d3e35425 100644
--- a/deps/uv/README.md
+++ b/deps/uv/README.md
@@ -262,8 +262,7 @@ Run:
 
 ```bash
 $ ./gyp_uv.py -f xcode
-$ xcodebuild -ARCHS="x86_64" -project uv.xcodeproj \
-     -configuration Release -target All
+$ xcodebuild -ARCHS="x86_64" -project out/uv.xcodeproj -configuration Release -alltargets
 ```
 
 Using Homebrew:
diff --git a/deps/uv/configure.ac b/deps/uv/configure.ac
index 68939c699e4a32..35e7c1b7493acd 100644
--- a/deps/uv/configure.ac
+++ b/deps/uv/configure.ac
@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.24.0], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.24.1], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])
diff --git a/deps/uv/docs/src/handle.rst b/deps/uv/docs/src/handle.rst
index 86fa811d3f7eed..544794db06c956 100644
--- a/deps/uv/docs/src/handle.rst
+++ b/deps/uv/docs/src/handle.rst
@@ -140,6 +140,8 @@ API
 
     Request handle to be closed. `close_cb` will be called asynchronously after
     this call. This MUST be called on each handle before memory is released.
+    Moreover, the memory can only be released in `close_cb` or after it has
+    returned.
 
     Handles that wrap file descriptors are closed immediately but
     `close_cb` will still be deferred to the next iteration of the event loop.
diff --git a/deps/uv/include/uv/version.h b/deps/uv/include/uv/version.h
index 105e9a2615f4a6..3bc023700ef002 100644
--- a/deps/uv/include/uv/version.h
+++ b/deps/uv/include/uv/version.h
@@ -32,7 +32,7 @@
 
 #define UV_VERSION_MAJOR 1
 #define UV_VERSION_MINOR 24
-#define UV_VERSION_PATCH 0
+#define UV_VERSION_PATCH 1
 #define UV_VERSION_IS_RELEASE 1
 #define UV_VERSION_SUFFIX ""
 
diff --git a/deps/uv/include/uv/win.h b/deps/uv/include/uv/win.h
index bb9477c8346bdc..edd2cc6eb9cd3f 100644
--- a/deps/uv/include/uv/win.h
+++ b/deps/uv/include/uv/win.h
@@ -25,6 +25,7 @@
 
 #if !defined(_SSIZE_T_) && !defined(_SSIZE_T_DEFINED)
 typedef intptr_t ssize_t;
+# define SSIZE_MAX INTPTR_MAX
 # define _SSIZE_T_
 # define _SSIZE_T_DEFINED
 #endif
diff --git a/deps/uv/src/inet.c b/deps/uv/src/inet.c
index 4598ca1e9f9670..698ab232e53714 100644
--- a/deps/uv/src/inet.c
+++ b/deps/uv/src/inet.c
@@ -59,8 +59,7 @@ static int inet_ntop4(const unsigned char *src, char *dst, size_t size) {
   if (l <= 0 || (size_t) l >= size) {
     return UV_ENOSPC;
   }
-  strncpy(dst, tmp, size);
-  dst[size - 1] = '\0';
+  uv__strscpy(dst, tmp, size);
   return 0;
 }
 
@@ -142,14 +141,8 @@ static int inet_ntop6(const unsigned char *src, char *dst, size_t size) {
   if (best.base != -1 && (best.base + best.len) == ARRAY_SIZE(words))
     *tp++ = ':';
   *tp++ = '\0';
-
-  /*
-   * Check for overflow, copy, and we're done.
-   */
-  if ((size_t)(tp - tmp) > size) {
+  if (UV_E2BIG == uv__strscpy(dst, tmp, size))
     return UV_ENOSPC;
-  }
-  strcpy(dst, tmp);
   return 0;
 }
 
diff --git a/deps/uv/src/strscpy.c b/deps/uv/src/strscpy.c
new file mode 100644
index 00000000000000..2a2bdce7450113
--- /dev/null
+++ b/deps/uv/src/strscpy.c
@@ -0,0 +1,17 @@
+#include "strscpy.h"
+#include <limits.h>  /* SSIZE_MAX */
+
+ssize_t uv__strscpy(char* d, const char* s, size_t n) {
+  size_t i;
+
+  for (i = 0; i < n; i++)
+    if ('\0' == (d[i] = s[i]))
+      return i > SSIZE_MAX ? UV_E2BIG : (ssize_t) i;
+
+  if (i == 0)
+    return 0;
+
+  d[--i] = '\0';
+
+  return UV_E2BIG;
+}
diff --git a/deps/uv/src/strscpy.h b/deps/uv/src/strscpy.h
new file mode 100644
index 00000000000000..fbe0a393f20542
--- /dev/null
+++ b/deps/uv/src/strscpy.h
@@ -0,0 +1,18 @@
+#ifndef UV_STRSCPY_H_
+#define UV_STRSCPY_H_
+
+/* Include uv.h for its definitions of size_t and ssize_t.
+ * size_t can be obtained directly from <stddef.h> but ssize_t requires
+ * some hoop jumping on Windows that I didn't want to duplicate here.
+ */
+#include "uv.h"
+
+/* Copies up to |n-1| bytes from |d| to |s| and always zero-terminates
+ * the result, except when |n==0|. Returns the number of bytes copied
+ * or UV_E2BIG if |d| is too small.
+ *
+ * See https://www.kernel.org/doc/htmldocs/kernel-api/API-strscpy.html
+ */
+ssize_t uv__strscpy(char* d, const char* s, size_t n);
+
+#endif  /* UV_STRSCPY_H_ */
diff --git a/deps/uv/src/timer.c b/deps/uv/src/timer.c
index 2bf449a736c2bb..dd78bcbad9a986 100644
--- a/deps/uv/src/timer.c
+++ b/deps/uv/src/timer.c
@@ -152,7 +152,7 @@ int uv__next_timeout(const uv_loop_t* loop) {
   if (diff > INT_MAX)
     diff = INT_MAX;
 
-  return diff;
+  return (int) diff;
 }
 
 
diff --git a/deps/uv/src/unix/aix.c b/deps/uv/src/unix/aix.c
index baac8e6c0067d7..44c9cf5b639c31 100644
--- a/deps/uv/src/unix/aix.c
+++ b/deps/uv/src/unix/aix.c
@@ -358,19 +358,15 @@ void uv_loadavg(double avg[3]) {
 
 
 #ifdef HAVE_SYS_AHAFS_EVPRODS_H
-static char *uv__rawname(char *cp) {
-  static char rawbuf[FILENAME_MAX+1];
-  char *dp = rindex(cp, '/');
+static char* uv__rawname(const char* cp, char (*dst)[FILENAME_MAX+1]) {
+  char* dp;
 
+  dp = rindex(cp, '/');
   if (dp == 0)
     return 0;
 
-  *dp = 0;
-  strcpy(rawbuf, cp);
-  *dp = '/';
-  strcat(rawbuf, "/r");
-  strcat(rawbuf, dp+1);
-  return rawbuf;
+  snprintf(*dst, sizeof(*dst), "%.*s/r%s", (int) (dp - cp), cp, dp + 1);
+  return *dst;
 }
 
 
@@ -399,6 +395,7 @@ static int uv__path_is_a_directory(char* filename) {
  * Returns 0 if AHAFS is mounted, or an error code < 0 on failure
  */
 static int uv__is_ahafs_mounted(void){
+  char rawbuf[FILENAME_MAX+1];
   int rv, i = 2;
   struct vmount *p;
   int size_multiplier = 10;
@@ -432,7 +429,7 @@ static int uv__is_ahafs_mounted(void){
     obj = vmt2dataptr(vmt, VMT_OBJECT);     /* device */
     stub = vmt2dataptr(vmt, VMT_STUB);      /* mount point */
 
-    if (EQ(obj, dev) || EQ(uv__rawname(obj), dev) || EQ(stub, dev)) {
+    if (EQ(obj, dev) || EQ(uv__rawname(obj, &rawbuf), dev) || EQ(stub, dev)) {
       uv__free(p);  /* Found a match */
       return 0;
     }
@@ -453,7 +450,8 @@ static int uv__makedir_p(const char *dir) {
   size_t len;
   int err;
 
-  snprintf(tmp, sizeof(tmp),"%s",dir);
+  /* TODO(bnoordhuis) Check uv__strscpy() return value. */
+  uv__strscpy(tmp, dir, sizeof(tmp));
   len = strlen(tmp);
   if (tmp[len - 1] == '/')
     tmp[len - 1] = 0;
@@ -702,9 +700,9 @@ static void uv__ahafs_event(uv_loop_t* loop, uv__io_t* event_watch, unsigned int
     else
       p++;
   }
-  strncpy(fname, p, sizeof(fname) - 1);
-  /* Just in case */
-  fname[sizeof(fname) - 1] = '\0';
+
+  /* TODO(bnoordhuis) Check uv__strscpy() return value. */
+  uv__strscpy(fname, p, sizeof(fname));
 
   handle->cb(handle, fname, events, 0);
 }
@@ -735,7 +733,8 @@ int uv_fs_event_start(uv_fs_event_t* handle,
   /* Figure out whether filename is absolute or not */
   if (filename[0] == '/') {
     /* We have absolute pathname */
-    snprintf(absolute_path, sizeof(absolute_path), "%s", filename);
+    /* TODO(bnoordhuis) Check uv__strscpy() return value. */
+    uv__strscpy(absolute_path, filename, sizeof(absolute_path));
   } else {
     /* We have a relative pathname, compose the absolute pathname */
     snprintf(cwd, sizeof(cwd), "/proc/%lu/cwd", (unsigned long) getpid());
@@ -986,7 +985,8 @@ int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
     return UV_ENOMEM;
   }
 
-  strcpy(cpu_id.name, FIRST_CPU);
+  /* TODO(bnoordhuis) Check uv__strscpy() return value. */
+  uv__strscpy(cpu_id.name, FIRST_CPU, sizeof(cpu_id.name));
   result = perfstat_cpu(&cpu_id, ps_cpus, sizeof(perfstat_cpu_t), ncpus);
   if (result == -1) {
     uv__free(ps_cpus);
diff --git a/deps/uv/src/unix/darwin-proctitle.c b/deps/uv/src/unix/darwin-proctitle.c
index 92d46b7466d43b..e505bdd23f8636 100644
--- a/deps/uv/src/unix/darwin-proctitle.c
+++ b/deps/uv/src/unix/darwin-proctitle.c
@@ -192,8 +192,7 @@ void uv__set_process_title(const char* title) {
 
   if (dynamic_pthread_setname_np != NULL) {
     char namebuf[64];  /* MAXTHREADNAMESIZE */
-    strncpy(namebuf, title, sizeof(namebuf) - 1);
-    namebuf[sizeof(namebuf) - 1] = '\0';
+    uv__strscpy(namebuf, title, sizeof(namebuf));
     dynamic_pthread_setname_np(namebuf);
   }
 }
diff --git a/deps/uv/src/unix/fs.c b/deps/uv/src/unix/fs.c
index 9068d4b115b646..d22c70f0c293d4 100644
--- a/deps/uv/src/unix/fs.c
+++ b/deps/uv/src/unix/fs.c
@@ -61,6 +61,7 @@
 
 #if defined(__APPLE__)
 # include <copyfile.h>
+# include <sys/sysctl.h>
 #elif defined(__linux__) && !defined(FICLONE)
 # include <sys/ioctl.h>
 # define FICLONE _IOW(0x94, 9, int)
@@ -70,6 +71,10 @@
 # include <utime.h>
 #endif
 
+#if defined(_AIX) && _XOPEN_SOURCE <= 600
+extern char *mkdtemp(char *template); /* See issue #740 on AIX < 7 */
+#endif
+
 #define INIT(subtype)                                                         \
   do {                                                                        \
     if (req == NULL)                                                          \
@@ -722,7 +727,7 @@ static ssize_t uv__fs_utime(uv_fs_t* req) {
   atr.att_atimechg = 1;
   atr.att_mtime = req->mtime;
   atr.att_atime = req->atime;
-  return __lchattr(req->path, &atr, sizeof(atr));
+  return __lchattr((char*) req->path, &atr, sizeof(atr));
 #else
   errno = ENOSYS;
   return -1;
@@ -793,26 +798,41 @@ static ssize_t uv__fs_write(uv_fs_t* req) {
 static ssize_t uv__fs_copyfile(uv_fs_t* req) {
 #if defined(__APPLE__) && !TARGET_OS_IPHONE
   /* On macOS, use the native copyfile(3). */
+  static int can_clone;
   copyfile_flags_t flags;
+  char buf[64];
+  size_t len;
+  int major;
 
   flags = COPYFILE_ALL;
 
   if (req->flags & UV_FS_COPYFILE_EXCL)
     flags |= COPYFILE_EXCL;
 
-#ifdef COPYFILE_CLONE
-  if (req->flags & UV_FS_COPYFILE_FICLONE)
-    flags |= COPYFILE_CLONE;
-#endif
-
+  /* Check OS version. Cloning is only supported on macOS >= 10.12. */
   if (req->flags & UV_FS_COPYFILE_FICLONE_FORCE) {
-#ifdef COPYFILE_CLONE_FORCE
-    flags |= COPYFILE_CLONE_FORCE;
-#else
-    return UV_ENOSYS;
-#endif
+    if (can_clone == 0) {
+      len = sizeof(buf);
+      if (sysctlbyname("kern.osrelease", buf, &len, NULL, 0))
+        return UV__ERR(errno);
+
+      if (1 != sscanf(buf, "%d", &major))
+        abort();
+
+      can_clone = -1 + 2 * (major >= 16);  /* macOS >= 10.12 */
+    }
+
+    if (can_clone < 0)
+      return UV_ENOSYS;
   }
 
+  /* copyfile() simply ignores COPYFILE_CLONE if it's not supported. */
+  if (req->flags & UV_FS_COPYFILE_FICLONE)
+    flags |= 1 << 24;  /* COPYFILE_CLONE */
+
+  if (req->flags & UV_FS_COPYFILE_FICLONE_FORCE)
+    flags |= 1 << 25;  /* COPYFILE_CLONE_FORCE */
+
   return copyfile(req->path, req->new_path, NULL, flags);
 #else
   uv_fs_t fs_req;
diff --git a/deps/uv/src/unix/linux-core.c b/deps/uv/src/unix/linux-core.c
index 991d1c60aee3dc..3341b94e1f26fd 100644
--- a/deps/uv/src/unix/linux-core.c
+++ b/deps/uv/src/unix/linux-core.c
@@ -170,6 +170,7 @@ int uv__io_check_fd(uv_loop_t* loop, int fd) {
   struct epoll_event e;
   int rc;
 
+  memset(&e, 0, sizeof(e));
   e.events = POLLIN;
   e.data.fd = -1;
 
@@ -218,6 +219,8 @@ void uv__io_poll(uv_loop_t* loop, int timeout) {
     return;
   }
 
+  memset(&e, 0, sizeof(e));
+
   while (!QUEUE_EMPTY(&loop->watcher_queue)) {
     q = QUEUE_HEAD(&loop->watcher_queue);
     QUEUE_REMOVE(q);
diff --git a/deps/uv/src/unix/linux-inotify.c b/deps/uv/src/unix/linux-inotify.c
index 7797f842524ed3..9b26202fb3366d 100644
--- a/deps/uv/src/unix/linux-inotify.c
+++ b/deps/uv/src/unix/linux-inotify.c
@@ -278,6 +278,7 @@ int uv_fs_event_start(uv_fs_event_t* handle,
                       const char* path,
                       unsigned int flags) {
   struct watcher_list* w;
+  size_t len;
   int events;
   int err;
   int wd;
@@ -306,12 +307,13 @@ int uv_fs_event_start(uv_fs_event_t* handle,
   if (w)
     goto no_insert;
 
-  w = uv__malloc(sizeof(*w) + strlen(path) + 1);
+  len = strlen(path) + 1;
+  w = uv__malloc(sizeof(*w) + len);
   if (w == NULL)
     return UV_ENOMEM;
 
   w->wd = wd;
-  w->path = strcpy((char*)(w + 1), path);
+  w->path = memcpy(w + 1, path, len);
   QUEUE_INIT(&w->watchers);
   w->iterating = 0;
   RB_INSERT(watcher_root, CAST(&handle->loop->inotify_watchers), w);
diff --git a/deps/uv/src/unix/netbsd.c b/deps/uv/src/unix/netbsd.c
index 4cfde1a586444c..a2a4e521542af3 100644
--- a/deps/uv/src/unix/netbsd.c
+++ b/deps/uv/src/unix/netbsd.c
@@ -87,7 +87,8 @@ int uv_exepath(char* buffer, size_t* size) {
   /* Copy string from the intermediate buffer to outer one with appropriate
    * length.
    */
-  strlcpy(buffer, int_buf, *size);
+  /* TODO(bnoordhuis) Check uv__strscpy() return value. */
+  uv__strscpy(buffer, int_buf, *size);
 
   /* Set new size. */
   *size = strlen(buffer);
diff --git a/deps/uv/src/unix/os390.c b/deps/uv/src/unix/os390.c
index b43aebfc926940..dc146e31108108 100644
--- a/deps/uv/src/unix/os390.c
+++ b/deps/uv/src/unix/os390.c
@@ -229,15 +229,15 @@ static int getexe(const int pid, char* buf, size_t len) {
   assert(((Output_buf.Output_data.offsetPath >>24) & 0xFF) == 'A');
 
   /* Get the offset from the lowest 3 bytes */
-  Output_path = (char*)(&Output_buf) +
-                (Output_buf.Output_data.offsetPath & 0x00FFFFFF);
+  Output_path = (struct Output_path_type*) ((char*) (&Output_buf) +
+      (Output_buf.Output_data.offsetPath & 0x00FFFFFF));
 
   if (Output_path->len >= len) {
     errno = ENOBUFS;
     return -1;
   }
 
-  strncpy(buf, Output_path->path, len);
+  uv__strscpy(buf, Output_path->path, len);
 
   return 0;
 }
diff --git a/deps/uv/src/unix/pipe.c b/deps/uv/src/unix/pipe.c
index e450a30e9c7e0c..d3b554cfc3d896 100644
--- a/deps/uv/src/unix/pipe.c
+++ b/deps/uv/src/unix/pipe.c
@@ -66,8 +66,7 @@ int uv_pipe_bind(uv_pipe_t* handle, const char* name) {
   sockfd = err;
 
   memset(&saddr, 0, sizeof saddr);
-  strncpy(saddr.sun_path, pipe_fname, sizeof(saddr.sun_path) - 1);
-  saddr.sun_path[sizeof(saddr.sun_path) - 1] = '\0';
+  uv__strscpy(saddr.sun_path, pipe_fname, sizeof(saddr.sun_path));
   saddr.sun_family = AF_UNIX;
 
   if (bind(sockfd, (struct sockaddr*)&saddr, sizeof saddr)) {
@@ -186,8 +185,7 @@ void uv_pipe_connect(uv_connect_t* req,
   }
 
   memset(&saddr, 0, sizeof saddr);
-  strncpy(saddr.sun_path, name, sizeof(saddr.sun_path) - 1);
-  saddr.sun_path[sizeof(saddr.sun_path) - 1] = '\0';
+  uv__strscpy(saddr.sun_path, name, sizeof(saddr.sun_path));
   saddr.sun_family = AF_UNIX;
 
   do {
diff --git a/deps/uv/src/unix/sunos.c b/deps/uv/src/unix/sunos.c
index ec5ecd7d3ce6b9..2552a019eb474d 100644
--- a/deps/uv/src/unix/sunos.c
+++ b/deps/uv/src/unix/sunos.c
@@ -707,13 +707,14 @@ static int uv__set_phys_addr(uv_interface_address_t* address,
 
   struct sockaddr_dl* sa_addr;
   int sockfd;
-  int i;
+  size_t i;
   struct arpreq arpreq;
 
   /* This appears to only work as root */
   sa_addr = (struct sockaddr_dl*)(ent->ifa_addr);
   memcpy(address->phys_addr, LLADDR(sa_addr), sizeof(address->phys_addr));
   for (i = 0; i < sizeof(address->phys_addr); i++) {
+    /* Check that all bytes of phys_addr are zero. */
     if (address->phys_addr[i] != 0)
       return 0;
   }
diff --git a/deps/uv/src/uv-common.c b/deps/uv/src/uv-common.c
index 71d100a162f4ca..952bde080c2864 100644
--- a/deps/uv/src/uv-common.c
+++ b/deps/uv/src/uv-common.c
@@ -162,7 +162,7 @@ static const char* uv__unknown_err_code(int err) {
 
 #define UV_ERR_NAME_GEN_R(name, _) \
 case UV_## name: \
-  snprintf(buf, buflen, "%s", #name); break;
+  uv__strscpy(buf, #name, buflen); break;
 char* uv_err_name_r(int err, char* buf, size_t buflen) {
   switch (err) {
     UV_ERRNO_MAP(UV_ERR_NAME_GEN_R)
diff --git a/deps/uv/src/uv-common.h b/deps/uv/src/uv-common.h
index 5555f83aee4864..15ac4d02c1332b 100644
--- a/deps/uv/src/uv-common.h
+++ b/deps/uv/src/uv-common.h
@@ -40,6 +40,7 @@
 #include "uv.h"
 #include "uv/tree.h"
 #include "queue.h"
+#include "strscpy.h"
 
 #if EDOM > 0
 # define UV__ERR(x) (-(x))
diff --git a/deps/uv/src/uv-data-getter-setters.c b/deps/uv/src/uv-data-getter-setters.c
index 533e4a2fe12bb3..b7fcd4a7fd0ae4 100644
--- a/deps/uv/src/uv-data-getter-setters.c
+++ b/deps/uv/src/uv-data-getter-setters.c
@@ -3,11 +3,11 @@
 const char* uv_handle_type_name(uv_handle_type type) {
   switch (type) {
 #define XX(uc,lc) case UV_##uc: return #lc;
-    UV_HANDLE_TYPE_MAP(XX)
+  UV_HANDLE_TYPE_MAP(XX)
 #undef XX
-    case UV_FILE: return "file";
-    case UV_HANDLE_TYPE_MAX:
-    case UV_UNKNOWN_HANDLE: return NULL;
+  case UV_FILE: return "file";
+  case UV_HANDLE_TYPE_MAX:
+  case UV_UNKNOWN_HANDLE: return NULL;
   }
   return NULL;
 }
@@ -31,10 +31,12 @@ void uv_handle_set_data(uv_handle_t* handle, void* data) {
 const char* uv_req_type_name(uv_req_type type) {
   switch (type) {
 #define XX(uc,lc) case UV_##uc: return #lc;
-    UV_REQ_TYPE_MAP(XX)
+  UV_REQ_TYPE_MAP(XX)
 #undef XX
-    case UV_REQ_TYPE_MAX:
-    case UV_UNKNOWN_REQ: return NULL;
+  case UV_REQ_TYPE_MAX:
+  case UV_UNKNOWN_REQ:
+  default: /* UV_REQ_TYPE_PRIVATE */
+     return NULL;
   }
   return NULL;
 }
diff --git a/deps/uv/src/win/dl.c b/deps/uv/src/win/dl.c
index 5b84555ca4d57f..676be4dc7b5b8a 100644
--- a/deps/uv/src/win/dl.c
+++ b/deps/uv/src/win/dl.c
@@ -64,7 +64,8 @@ void uv_dlclose(uv_lib_t* lib) {
 
 
 int uv_dlsym(uv_lib_t* lib, const char* name, void** ptr) {
-  *ptr = (void*) GetProcAddress(lib->handle, name);
+  /* Cast though integer to suppress pedantic warning about forbidden cast. */
+  *ptr = (void*)(uintptr_t) GetProcAddress(lib->handle, name);
   return uv__dlerror(lib, "", *ptr ? 0 : GetLastError());
 }
 
@@ -75,8 +76,9 @@ const char* uv_dlerror(const uv_lib_t* lib) {
 
 
 static void uv__format_fallback_error(uv_lib_t* lib, int errorno){
-  DWORD_PTR args[1] = { (DWORD_PTR) errorno };
-  LPSTR fallback_error = "error: %1!d!";
+  static const CHAR fallback_error[] = "error: %1!d!";
+  DWORD_PTR args[1];
+  args[0] = (DWORD_PTR) errorno;
 
   FormatMessageA(FORMAT_MESSAGE_FROM_STRING |
                  FORMAT_MESSAGE_ARGUMENT_ARRAY |
diff --git a/deps/uv/src/win/fs-event.c b/deps/uv/src/win/fs-event.c
index 25809ea4f2f605..1244967a78dacb 100644
--- a/deps/uv/src/win/fs-event.c
+++ b/deps/uv/src/win/fs-event.c
@@ -215,11 +215,11 @@ int uv_fs_event_start(uv_fs_event_t* handle,
         uv__free(long_path);
         long_path = NULL;
       }
-    }
 
-    if (long_path) {
-      uv__free(pathw);
-      pathw = long_path;
+      if (long_path) {
+        uv__free(pathw);
+        pathw = long_path;
+      }
     }
 
     dir_to_watch = pathw;
diff --git a/deps/uv/src/win/fs.c b/deps/uv/src/win/fs.c
index 7ad0d077a6440b..0716ecca1221e6 100644
--- a/deps/uv/src/win/fs.c
+++ b/deps/uv/src/win/fs.c
@@ -98,14 +98,17 @@
     return;                                                                 \
   }
 
+#define MILLIONu (1000U * 1000U)
+#define BILLIONu (1000U * 1000U * 1000U)
+
 #define FILETIME_TO_UINT(filetime)                                          \
-   (*((uint64_t*) &(filetime)) - 116444736000000000ULL)
+   (*((uint64_t*) &(filetime)) - (uint64_t) 116444736 * BILLIONu)
 
 #define FILETIME_TO_TIME_T(filetime)                                        \
-   (FILETIME_TO_UINT(filetime) / 10000000ULL)
+   (FILETIME_TO_UINT(filetime) / (10u * MILLIONu))
 
 #define FILETIME_TO_TIME_NS(filetime, secs)                                 \
-   ((FILETIME_TO_UINT(filetime) - (secs * 10000000ULL)) * 100)
+   ((FILETIME_TO_UINT(filetime) - (secs * (uint64_t) 10 * MILLIONu)) * 100U)
 
 #define FILETIME_TO_TIMESPEC(ts, filetime)                                  \
    do {                                                                     \
@@ -115,8 +118,8 @@
 
 #define TIME_T_TO_FILETIME(time, filetime_ptr)                              \
   do {                                                                      \
-    uint64_t bigtime = ((uint64_t) ((time) * 10000000ULL)) +                \
-                                  116444736000000000ULL;                    \
+    uint64_t bigtime = ((uint64_t) ((time) * (uint64_t) 10 * MILLIONu)) +   \
+                       (uint64_t) 116444736 * BILLIONu;                     \
     (filetime_ptr)->dwLowDateTime = bigtime & 0xFFFFFFFF;                   \
     (filetime_ptr)->dwHighDateTime = bigtime >> 32;                         \
   } while(0)
@@ -507,6 +510,33 @@ void fs__open(uv_fs_t* req) {
   }
 
   if (flags & UV_FS_O_DIRECT) {
+    /*
+     * FILE_APPEND_DATA and FILE_FLAG_NO_BUFFERING are mutually exclusive.
+     * Windows returns 87, ERROR_INVALID_PARAMETER if these are combined.
+     *
+     * FILE_APPEND_DATA is included in FILE_GENERIC_WRITE:
+     *
+     * FILE_GENERIC_WRITE = STANDARD_RIGHTS_WRITE |
+     *                      FILE_WRITE_DATA |
+     *                      FILE_WRITE_ATTRIBUTES |
+     *                      FILE_WRITE_EA |
+     *                      FILE_APPEND_DATA |
+     *                      SYNCHRONIZE
+     *
+     * Note: Appends are also permitted by FILE_WRITE_DATA.
+     *
+     * In order for direct writes and direct appends to succeed, we therefore
+     * exclude FILE_APPEND_DATA if FILE_WRITE_DATA is specified, and otherwise
+     * fail if the user's sole permission is a direct append, since this
+     * particular combination is invalid.
+     */
+    if (access & FILE_APPEND_DATA) {
+      if (access & FILE_WRITE_DATA) {
+        access &= ~FILE_APPEND_DATA;
+      } else {
+        goto einval;
+      }
+    }
     attributes |= FILE_FLAG_NO_BUFFERING;
   }
 
@@ -788,9 +818,8 @@ void fs__unlink(uv_fs_t* req) {
     /* Remove read-only attribute */
     FILE_BASIC_INFORMATION basic = { 0 };
 
-    basic.FileAttributes = info.dwFileAttributes
-                           & ~(FILE_ATTRIBUTE_READONLY)
-                           | FILE_ATTRIBUTE_ARCHIVE;
+    basic.FileAttributes = (info.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY) |
+                           FILE_ATTRIBUTE_ARCHIVE;
 
     status = pNtSetInformationFile(handle,
                                    &iosb,
@@ -1201,7 +1230,7 @@ INLINE static int fs__stat_handle(HANDLE handle, uv_stat_t* statbuf,
 
   /* st_blocks contains the on-disk allocation size in 512-byte units. */
   statbuf->st_blocks =
-      file_info.StandardInformation.AllocationSize.QuadPart >> 9ULL;
+      (uint64_t) file_info.StandardInformation.AllocationSize.QuadPart >> 9;
 
   statbuf->st_nlink = file_info.StandardInformation.NumberOfLinks;
 
@@ -1958,7 +1987,7 @@ static void fs__readlink(uv_fs_t* req) {
 }
 
 
-static size_t fs__realpath_handle(HANDLE handle, char** realpath_ptr) {
+static ssize_t fs__realpath_handle(HANDLE handle, char** realpath_ptr) {
   int r;
   DWORD w_realpath_len;
   WCHAR* w_realpath_ptr = NULL;
diff --git a/deps/uv/src/win/pipe.c b/deps/uv/src/win/pipe.c
index 9a3cbc8a1e26e1..e303cc8a2331e7 100644
--- a/deps/uv/src/win/pipe.c
+++ b/deps/uv/src/win/pipe.c
@@ -1541,7 +1541,7 @@ int uv__pipe_write_ipc(uv_loop_t* loop,
         frame_header.flags |= UV__IPC_FRAME_HAS_SOCKET_XFER;
         break;
       default:
-        assert(0);  // Unreachable.
+        assert(0);  /* Unreachable. */
     }
     /* Add xfer info buffer. */
     bufs[buf_index++] = uv_buf_init((char*) &xfer_info, sizeof xfer_info);
@@ -2141,7 +2141,7 @@ int uv_pipe_open(uv_pipe_t* pipe, uv_file file) {
   if (pipe->ipc) {
     assert(!(pipe->flags & UV_HANDLE_NON_OVERLAPPED_PIPE));
     pipe->pipe.conn.ipc_remote_pid = uv_os_getppid();
-    assert(pipe->pipe.conn.ipc_remote_pid != -1);
+    assert(pipe->pipe.conn.ipc_remote_pid != (DWORD) -1);
   }
   return 0;
 }
@@ -2312,7 +2312,7 @@ uv_handle_type uv_pipe_pending_type(uv_pipe_t* handle) {
 }
 
 int uv_pipe_chmod(uv_pipe_t* handle, int mode) {
-  SID_IDENTIFIER_AUTHORITY sid_world = SECURITY_WORLD_SID_AUTHORITY;
+  SID_IDENTIFIER_AUTHORITY sid_world = { SECURITY_WORLD_SID_AUTHORITY };
   PACL old_dacl, new_dacl;
   PSECURITY_DESCRIPTOR sd;
   EXPLICIT_ACCESS ea;
diff --git a/deps/uv/src/win/poll.c b/deps/uv/src/win/poll.c
index 77eb071c85a338..3c6678600e40cc 100644
--- a/deps/uv/src/win/poll.c
+++ b/deps/uv/src/win/poll.c
@@ -75,7 +75,7 @@ static AFD_POLL_INFO* uv__get_afd_poll_info_dummy(void) {
 static void uv__fast_poll_submit_poll_req(uv_loop_t* loop, uv_poll_t* handle) {
   uv_req_t* req;
   AFD_POLL_INFO* afd_poll_info;
-  DWORD result;
+  int result;
 
   /* Find a yet unsubmitted req to submit. */
   if (handle->submitted_events_1 == 0) {
@@ -136,7 +136,7 @@ static void uv__fast_poll_submit_poll_req(uv_loop_t* loop, uv_poll_t* handle) {
 
 static int uv__fast_poll_cancel_poll_req(uv_loop_t* loop, uv_poll_t* handle) {
   AFD_POLL_INFO afd_poll_info;
-  DWORD result;
+  int result;
 
   afd_poll_info.Exclusive = TRUE;
   afd_poll_info.NumberOfHandles = 1;
diff --git a/deps/uv/src/win/process.c b/deps/uv/src/win/process.c
index e7cccd9c80123f..f9c53de0af0079 100644
--- a/deps/uv/src/win/process.c
+++ b/deps/uv/src/win/process.c
@@ -739,7 +739,7 @@ int make_program_env(char* env_block[], WCHAR** dst_ptr) {
     }
   }
   *ptr_copy = NULL;
-  assert(env_len == ptr - dst_copy);
+  assert(env_len == (size_t) (ptr - dst_copy));
 
   /* sort our (UTF-16) copy */
   qsort(env_copy, env_block_count-1, sizeof(wchar_t*), qsort_wcscmp);
@@ -799,7 +799,7 @@ int make_program_env(char* env_block[], WCHAR** dst_ptr) {
         var_size = GetEnvironmentVariableW(required_vars[i].wide,
                                            ptr,
                                            (int) (env_len - (ptr - dst)));
-        if (var_size != len-1) { /* race condition? */
+        if (var_size != (DWORD) (len - 1)) { /* TODO: handle race condition? */
           uv_fatal_error(GetLastError(), "GetEnvironmentVariableW");
         }
       }
@@ -815,7 +815,7 @@ int make_program_env(char* env_block[], WCHAR** dst_ptr) {
   }
 
   /* Terminate with an extra NULL. */
-  assert(env_len == (ptr - dst));
+  assert(env_len == (size_t) (ptr - dst));
   *ptr = L'\0';
 
   uv__free(dst_copy);
diff --git a/deps/uv/src/win/tty.c b/deps/uv/src/win/tty.c
index 398288ec1de53b..45bbe9689aea1d 100644
--- a/deps/uv/src/win/tty.c
+++ b/deps/uv/src/win/tty.c
@@ -791,8 +791,9 @@ void uv_process_tty_read_raw_req(uv_loop_t* loop, uv_tty_t* handle,
         if (KEV.uChar.UnicodeChar >= 0xDC00 &&
             KEV.uChar.UnicodeChar < 0xE000) {
           /* UTF-16 surrogate pair */
-          WCHAR utf16_buffer[2] = { handle->tty.rd.last_utf16_high_surrogate,
-                                    KEV.uChar.UnicodeChar};
+          WCHAR utf16_buffer[2];
+          utf16_buffer[0] = handle->tty.rd.last_utf16_high_surrogate;
+          utf16_buffer[1] = KEV.uChar.UnicodeChar;
           char_len = WideCharToMultiByte(CP_UTF8,
                                          0,
                                          utf16_buffer,
diff --git a/deps/uv/src/win/winapi.h b/deps/uv/src/win/winapi.h
index cfbac52eb1d6f4..2a8adf6b262463 100644
--- a/deps/uv/src/win/winapi.h
+++ b/deps/uv/src/win/winapi.h
@@ -4109,6 +4109,9 @@
 #endif
 
 /* from winternl.h */
+#if !defined(__UNICODE_STRING_DEFINED) && defined(__MINGW32_)
+#define __UNICODE_STRING_DEFINED
+#endif
 typedef struct _UNICODE_STRING {
   USHORT Length;
   USHORT MaximumLength;
diff --git a/deps/uv/test/run-tests.c b/deps/uv/test/run-tests.c
index 42bde0bb96476d..2a699f46dcb0ff 100644
--- a/deps/uv/test/run-tests.c
+++ b/deps/uv/test/run-tests.c
@@ -142,11 +142,11 @@ static int maybe_run_test(int argc, char **argv) {
   if (strcmp(argv[1], "spawn_helper5") == 0) {
     const char out[] = "fourth stdio!\n";
     notify_parent_process();
+    {
 #ifdef _WIN32
-    DWORD bytes;
-    WriteFile((HANDLE) _get_osfhandle(3), out, sizeof(out) - 1, &bytes, NULL);
+      DWORD bytes;
+      WriteFile((HANDLE) _get_osfhandle(3), out, sizeof(out) - 1, &bytes, NULL);
 #else
-    {
       ssize_t r;
 
       do
@@ -154,8 +154,8 @@ static int maybe_run_test(int argc, char **argv) {
       while (r == -1 && errno == EINTR);
 
       fsync(3);
-    }
 #endif
+    }
     return 1;
   }
 
diff --git a/deps/uv/test/runner-win.c b/deps/uv/test/runner-win.c
index e3e91a7b69ca62..f60c23df3ebf1e 100644
--- a/deps/uv/test/runner-win.c
+++ b/deps/uv/test/runner-win.c
@@ -194,7 +194,7 @@ int process_wait(process_info_t *vec, int n, int timeout) {
 
   result = WaitForMultipleObjects(n, handles, TRUE, timeout_api);
 
-  if (result >= WAIT_OBJECT_0 && result < WAIT_OBJECT_0 + n) {
+  if (result < WAIT_OBJECT_0 + n) {
     /* All processes are terminated. */
     return 0;
   }
@@ -268,7 +268,8 @@ int process_read_last_line(process_info_t *p,
   if (!ReadFile(p->stdio_out, buffer, buffer_len - 1, &read, &overlapped))
     return -1;
 
-  for (start = read - 1; start >= 0; start--) {
+  start = read;
+  while (start-- > 0) {
     if (buffer[start] == '\n' || buffer[start] == '\r')
       break;
   }
@@ -308,7 +309,7 @@ void process_cleanup(process_info_t *p) {
 }
 
 
-static int clear_line() {
+static int clear_line(void) {
   HANDLE handle;
   CONSOLE_SCREEN_BUFFER_INFO info;
   COORD coord;
diff --git a/deps/uv/test/runner-win.h b/deps/uv/test/runner-win.h
index 8cc4c16eb22eac..975eed793104c2 100644
--- a/deps/uv/test/runner-win.h
+++ b/deps/uv/test/runner-win.h
@@ -20,7 +20,9 @@
  */
 
 /* Don't complain about write(), fileno() etc. being deprecated. */
+#ifdef _MSC_VER
 #pragma warning(disable : 4996)
+#endif
 
 
 #include <winsock2.h>
diff --git a/deps/uv/test/test-close-fd.c b/deps/uv/test/test-close-fd.c
index 93a7bd7c021026..2ed9a10032dfe6 100644
--- a/deps/uv/test/test-close-fd.c
+++ b/deps/uv/test/test-close-fd.c
@@ -73,4 +73,8 @@ TEST_IMPL(close_fd) {
   return 0;
 }
 
-#endif  /* !defined(_WIN32) */
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
+#endif /* !_WIN32 */
diff --git a/deps/uv/test/test-condvar.c b/deps/uv/test/test-condvar.c
index 50f3c047c00cd2..32abccc2e7602e 100644
--- a/deps/uv/test/test-condvar.c
+++ b/deps/uv/test/test-condvar.c
@@ -235,7 +235,7 @@ TEST_IMPL(condvar_5) {
   uint64_t elapsed;
   uint64_t timeout;
 
-  timeout = 100 * 1e6; /* 100 ms in ns */
+  timeout = 100 * 1000 * 1000; /* 100 ms in ns */
 
   /* Mostly irrelevant. We need cond and mutex initialized. */
   worker_config_init(&wc, 0, NULL, NULL);
diff --git a/deps/uv/test/test-emfile.c b/deps/uv/test/test-emfile.c
index 8e44ac5c77877d..bc1fce5f5591f0 100644
--- a/deps/uv/test/test-emfile.c
+++ b/deps/uv/test/test-emfile.c
@@ -38,6 +38,11 @@ static uv_tcp_t client_handle;
 
 
 TEST_IMPL(emfile) {
+  struct sockaddr_in addr;
+  struct rlimit limits;
+  uv_connect_t connect_req;
+  uv_loop_t* loop;
+  int first_fd;
 #if defined(_AIX) || defined(__MVS__)
   /* On AIX, if a 'accept' call fails ECONNRESET is set on the socket
    * which causes uv__emfile_trick to not work as intended and this test
@@ -45,11 +50,6 @@ TEST_IMPL(emfile) {
    */
   RETURN_SKIP("uv__emfile_trick does not work on this OS");
 #endif
-  struct sockaddr_in addr;
-  struct rlimit limits;
-  uv_connect_t connect_req;
-  uv_loop_t* loop;
-  int first_fd;
 
   /* Lower the file descriptor limit and use up all fds save one. */
   limits.rlim_cur = limits.rlim_max = maxfd + 1;
@@ -114,4 +114,8 @@ static void connect_cb(uv_connect_t* req, int status) {
   uv_close((uv_handle_t*) &client_handle, NULL);
 }
 
-#endif  /* !defined(_WIN32) */
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
+#endif /* !_WIN32 */
diff --git a/deps/uv/test/test-fork.c b/deps/uv/test/test-fork.c
index f47ae3e656299e..9e4684f0e15376 100644
--- a/deps/uv/test/test-fork.c
+++ b/deps/uv/test/test-fork.c
@@ -676,5 +676,8 @@ TEST_IMPL(fork_threadpool_queue_work_simple) {
 }
 #endif /* !__MVS__ */
 
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
 
 #endif /* !_WIN32 */
diff --git a/deps/uv/test/test-fs.c b/deps/uv/test/test-fs.c
index 038d2dd6159245..5eed160de2e64b 100644
--- a/deps/uv/test/test-fs.c
+++ b/deps/uv/test/test-fs.c
@@ -154,7 +154,7 @@ int uv_test_getiovmax(void) {
 static unsigned REPARSE_TAG = 0x9913;
 static GUID REPARSE_GUID = {
   0x1bf6205f, 0x46ae, 0x4527,
-  0xb1, 0x0c, 0xc5, 0x09, 0xb7, 0x55, 0x22, 0x80 };
+  { 0xb1, 0x0c, 0xc5, 0x09, 0xb7, 0x55, 0x22, 0x80 }};
 #endif
 
 static void check_permission(const char* filename, unsigned int mode) {
@@ -2331,9 +2331,6 @@ TEST_IMPL(fs_stat_root) {
 
 
 TEST_IMPL(fs_futime) {
-#if defined(_AIX) && !defined(_AIX71)
-  RETURN_SKIP("futime is not implemented for AIX versions below 7.1");
-#else
   utime_check_t checkme;
   const char* path = "test_file";
   double atime;
@@ -2341,6 +2338,9 @@ TEST_IMPL(fs_futime) {
   uv_file file;
   uv_fs_t req;
   int r;
+#if defined(_AIX) && !defined(_AIX71)
+  RETURN_SKIP("futime is not implemented for AIX versions below 7.1");
+#endif
 
   /* Setup. */
   loop = uv_default_loop();
@@ -2402,7 +2402,6 @@ TEST_IMPL(fs_futime) {
 
   MAKE_VALGRIND_HAPPY();
   return 0;
-#endif
 }
 
 
@@ -3601,6 +3600,53 @@ TEST_IMPL(fs_exclusive_sharing_mode) {
 }
 #endif
 
+#ifdef _WIN32
+TEST_IMPL(fs_file_flag_no_buffering) {
+  int r;
+
+  /* Setup. */
+  unlink("test_file");
+
+  ASSERT(UV_FS_O_APPEND > 0);
+  ASSERT(UV_FS_O_CREAT > 0);
+  ASSERT(UV_FS_O_DIRECT > 0);
+  ASSERT(UV_FS_O_RDWR > 0);
+
+  /* FILE_APPEND_DATA must be excluded from FILE_GENERIC_WRITE: */
+  r = uv_fs_open(NULL,
+                 &open_req1,
+                 "test_file",
+                 UV_FS_O_RDWR | UV_FS_O_CREAT | UV_FS_O_DIRECT,
+                 S_IWUSR | S_IRUSR,
+                 NULL);
+  ASSERT(r >= 0);
+  ASSERT(open_req1.result >= 0);
+  uv_fs_req_cleanup(&open_req1);
+
+  r = uv_fs_close(NULL, &close_req, open_req1.result, NULL);
+  ASSERT(r == 0);
+  ASSERT(close_req.result == 0);
+  uv_fs_req_cleanup(&close_req);
+
+  /* FILE_APPEND_DATA and FILE_FLAG_NO_BUFFERING are mutually exclusive: */
+  r = uv_fs_open(NULL,
+                 &open_req2,
+                 "test_file",
+                 UV_FS_O_APPEND | UV_FS_O_DIRECT,
+                 S_IWUSR | S_IRUSR,
+                 NULL);
+  ASSERT(r == UV_EINVAL);
+  ASSERT(open_req2.result == UV_EINVAL);
+  uv_fs_req_cleanup(&open_req2);
+
+  /* Cleanup */
+  unlink("test_file");
+
+  MAKE_VALGRIND_HAPPY();
+  return 0;
+}
+#endif
+
 #ifdef _WIN32
 int call_icacls(const char* command, ...) {
     char icacls_command[1024];
diff --git a/deps/uv/test/test-ip4-addr.c b/deps/uv/test/test-ip4-addr.c
index 3d6e0cf286ac90..c72f36a694455d 100644
--- a/deps/uv/test/test-ip4-addr.c
+++ b/deps/uv/test/test-ip4-addr.c
@@ -27,8 +27,13 @@
 
 
 TEST_IMPL(ip4_addr) {
-
   struct sockaddr_in addr;
+  char dst[16];
+
+  ASSERT(0 == uv_inet_ntop(AF_INET, "\xFF\xFF\xFF\xFF", dst, sizeof(dst)));
+  ASSERT(0 == strcmp(dst, "255.255.255.255"));
+  ASSERT(UV_ENOSPC == uv_inet_ntop(AF_INET, "\xFF\xFF\xFF\xFF",
+                                   dst, sizeof(dst) - 1));
 
   ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
   ASSERT(0 == uv_ip4_addr("255.255.255.255", TEST_PORT, &addr));
diff --git a/deps/uv/test/test-ip6-addr.c b/deps/uv/test/test-ip6-addr.c
index 25570dcacde1e3..bbf33a4854ed23 100644
--- a/deps/uv/test/test-ip6-addr.c
+++ b/deps/uv/test/test-ip6-addr.c
@@ -83,7 +83,7 @@ TEST_IMPL(ip6_addr_link_local) {
     ASSERT(0 == r);
 #ifdef _WIN32
     /* On Windows, the interface identifier is the numeric string of the index. */
-    ASSERT(strtol(interface_id, NULL, 10) == iface_index);
+    ASSERT(strtoul(interface_id, NULL, 10) == iface_index);
 #else
     /* On Unix/Linux, the interface identifier is the interface device name. */
     ASSERT(0 == strcmp(device_name, interface_id));
diff --git a/deps/uv/test/test-list.h b/deps/uv/test/test-list.h
index 46db4b2710138f..cc37bc039b15ba 100644
--- a/deps/uv/test/test-list.h
+++ b/deps/uv/test/test-list.h
@@ -349,9 +349,11 @@ TEST_DECLARE   (fs_null_req)
 TEST_DECLARE   (fs_read_dir)
 #ifdef _WIN32
 TEST_DECLARE   (fs_exclusive_sharing_mode)
+TEST_DECLARE   (fs_file_flag_no_buffering)
 TEST_DECLARE   (fs_open_readonly_acl)
 TEST_DECLARE   (fs_fchmod_archive_readonly)
 #endif
+TEST_DECLARE   (strscpy)
 TEST_DECLARE   (threadpool_queue_work_simple)
 TEST_DECLARE   (threadpool_queue_work_einval)
 TEST_DECLARE   (threadpool_multiple_event_loops)
@@ -904,11 +906,13 @@ TASK_LIST_START
   TEST_ENTRY  (fs_read_dir)
 #ifdef _WIN32
   TEST_ENTRY  (fs_exclusive_sharing_mode)
+  TEST_ENTRY  (fs_file_flag_no_buffering)
   TEST_ENTRY  (fs_open_readonly_acl)
   TEST_ENTRY  (fs_fchmod_archive_readonly)
 #endif
   TEST_ENTRY  (get_osfhandle_valid_handle)
   TEST_ENTRY  (open_osfhandle_valid_handle)
+  TEST_ENTRY  (strscpy)
   TEST_ENTRY  (threadpool_queue_work_simple)
   TEST_ENTRY  (threadpool_queue_work_einval)
   TEST_ENTRY  (threadpool_multiple_event_loops)
diff --git a/deps/uv/test/test-pipe-close-stdout-read-stdin.c b/deps/uv/test/test-pipe-close-stdout-read-stdin.c
index c8804b0e189249..126be2cc46f0e3 100644
--- a/deps/uv/test/test-pipe-close-stdout-read-stdin.c
+++ b/deps/uv/test/test-pipe-close-stdout-read-stdin.c
@@ -105,4 +105,8 @@ TEST_IMPL(pipe_close_stdout_read_stdin) {
   return 0;
 }
 
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
 #endif /* ifndef _WIN32 */
diff --git a/deps/uv/test/test-platform-output.c b/deps/uv/test/test-platform-output.c
index 4025fba540e61e..43ed119debfe69 100644
--- a/deps/uv/test/test-platform-output.c
+++ b/deps/uv/test/test-platform-output.c
@@ -49,7 +49,7 @@ TEST_IMPL(platform_output) {
   printf("uv_cwd: %s\n", buffer);
 
   err = uv_resident_set_memory(&rss);
-#if defined(__CYGWIN__) || defined(__MSYS__)
+#if defined(__MSYS__)
   ASSERT(err == UV_ENOSYS);
 #else
   ASSERT(err == 0);
diff --git a/deps/uv/test/test-poll-close-doesnt-corrupt-stack.c b/deps/uv/test/test-poll-close-doesnt-corrupt-stack.c
index 1dfc80e352b5cc..3393820fc40d77 100644
--- a/deps/uv/test/test-poll-close-doesnt-corrupt-stack.c
+++ b/deps/uv/test/test-poll-close-doesnt-corrupt-stack.c
@@ -49,7 +49,7 @@ static void poll_cb(uv_poll_t* h, int status, int events) {
 }
 
 
-static void NO_INLINE close_socket_and_verify_stack() {
+static void NO_INLINE close_socket_and_verify_stack(void) {
   const uint32_t MARKER = 0xDEADBEEF;
   const int VERIFY_AFTER = 10; /* ms */
   int r;
diff --git a/deps/uv/test/test-poll-oob.c b/deps/uv/test/test-poll-oob.c
index 2a6da843c616ad..77ffe31e962f10 100644
--- a/deps/uv/test/test-poll-oob.c
+++ b/deps/uv/test/test-poll-oob.c
@@ -202,4 +202,9 @@ TEST_IMPL(poll_oob) {
   MAKE_VALGRIND_HAPPY();
   return 0;
 }
+
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
 #endif
diff --git a/deps/uv/test/test-process-title-threadsafe.c b/deps/uv/test/test-process-title-threadsafe.c
index c0dee48a79f22f..19098eda0c4019 100644
--- a/deps/uv/test/test-process-title-threadsafe.c
+++ b/deps/uv/test/test-process-title-threadsafe.c
@@ -70,7 +70,7 @@ TEST_IMPL(process_title_threadsafe) {
 #if defined(__sun) || defined(__CYGWIN__) || defined(__MSYS__) || \
     defined(__MVS__)
   RETURN_SKIP("uv_(get|set)_process_title is not implemented.");
-#else
+#endif
 
   ASSERT(0 == uv_set_process_title(titles[0]));
   ASSERT(0 == uv_thread_create(&getter_thread, getter_thread_body, NULL));
@@ -82,5 +82,4 @@ TEST_IMPL(process_title_threadsafe) {
     ASSERT(0 == uv_thread_join(&setter_threads[i]));
 
   return 0;
-#endif
 }
diff --git a/deps/uv/test/test-process-title.c b/deps/uv/test/test-process-title.c
index 886f83a7d30fe1..efd48142b707bf 100644
--- a/deps/uv/test/test-process-title.c
+++ b/deps/uv/test/test-process-title.c
@@ -62,7 +62,8 @@ static void uv_get_process_title_edge_cases(void) {
 TEST_IMPL(process_title) {
 #if defined(__sun) || defined(__CYGWIN__) || defined(__MSYS__)
   RETURN_SKIP("uv_(get|set)_process_title is not implemented.");
-#else
+#endif
+
   /* Check for format string vulnerabilities. */
   set_title("%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s");
   set_title("new title");
@@ -71,5 +72,4 @@ TEST_IMPL(process_title) {
   uv_get_process_title_edge_cases();
 
   return 0;
-#endif
 }
diff --git a/deps/uv/test/test-signal-multiple-loops.c b/deps/uv/test/test-signal-multiple-loops.c
index 79242fc9fa99e7..4281d23d7223ab 100644
--- a/deps/uv/test/test-signal-multiple-loops.c
+++ b/deps/uv/test/test-signal-multiple-loops.c
@@ -295,4 +295,8 @@ TEST_IMPL(signal_multiple_loops) {
   return 0;
 }
 
-#endif  /* !_WIN32 */
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
+#endif /* !_WIN32 */
diff --git a/deps/uv/test/test-spawn.c b/deps/uv/test/test-spawn.c
index 594a64c60b8d5a..05c76f61452400 100644
--- a/deps/uv/test/test-spawn.c
+++ b/deps/uv/test/test-spawn.c
@@ -49,7 +49,9 @@ static char exepath[1024];
 static size_t exepath_size = 1024;
 static char* args[5];
 static int no_term_signal;
+#ifndef _WIN32
 static int timer_counter;
+#endif
 static uv_tcp_t tcp_server;
 
 #define OUTPUT_SIZE 1024
@@ -138,10 +140,12 @@ static void on_read(uv_stream_t* tcp, ssize_t nread, const uv_buf_t* buf) {
 }
 
 
+#ifndef _WIN32
 static void on_read_once(uv_stream_t* tcp, ssize_t nread, const uv_buf_t* buf) {
   uv_read_stop(tcp);
   on_read(tcp, nread, buf);
 }
+#endif
 
 
 static void write_cb(uv_write_t* req, int status) {
@@ -173,9 +177,11 @@ static void timer_cb(uv_timer_t* handle) {
 }
 
 
+#ifndef _WIN32
 static void timer_counter_cb(uv_timer_t* handle) {
   ++timer_counter;
 }
+#endif
 
 
 TEST_IMPL(spawn_fails) {
@@ -1198,7 +1204,7 @@ TEST_IMPL(argument_escaping) {
 int make_program_env(char** env_block, WCHAR** dst_ptr);
 
 TEST_IMPL(environment_creation) {
-  int i;
+  size_t i;
   char* environment[] = {
     "FOO=BAR",
     "SYSTEM=ROOT", /* substring of a supplied var name */
diff --git a/deps/uv/test/test-strscpy.c b/deps/uv/test/test-strscpy.c
new file mode 100644
index 00000000000000..4e7db6ffec8ef2
--- /dev/null
+++ b/deps/uv/test/test-strscpy.c
@@ -0,0 +1,53 @@
+/* Copyright libuv project contributors. All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to
+* deal in the Software without restriction, including without limitation the
+* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+* sell copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+* IN THE SOFTWARE.
+*/
+
+#include "uv.h"
+#include "task.h"
+#include <string.h>
+
+#include "../src/strscpy.h"
+#include "../src/strscpy.c"
+
+TEST_IMPL(strscpy) {
+  char d[4];
+
+  ASSERT(0 == uv__strscpy(d, "", 0));
+  ASSERT(0 == uv__strscpy(d, "x", 0));
+
+  memset(d, 0, sizeof(d));
+  ASSERT(1 == uv__strscpy(d, "x", sizeof(d)));
+  ASSERT(0 == memcmp(d, "x\0\0", sizeof(d)));
+
+  memset(d, 0, sizeof(d));
+  ASSERT(2 == uv__strscpy(d, "xy", sizeof(d)));
+  ASSERT(0 == memcmp(d, "xy\0", sizeof(d)));
+
+  ASSERT(3 == uv__strscpy(d, "xyz", sizeof(d)));
+  ASSERT(0 == memcmp(d, "xyz", sizeof(d)));
+
+  ASSERT(UV_E2BIG == uv__strscpy(d, "xyzz", sizeof(d)));
+  ASSERT(0 == memcmp(d, "xyz", sizeof(d)));
+
+  ASSERT(UV_E2BIG == uv__strscpy(d, "xyzzy", sizeof(d)));
+  ASSERT(0 == memcmp(d, "xyz", sizeof(d)));
+
+  return 0;
+}
diff --git a/deps/uv/test/test-tcp-close-accept.c b/deps/uv/test/test-tcp-close-accept.c
index e4878398c8b98e..624262bcfe9000 100644
--- a/deps/uv/test/test-tcp-close-accept.c
+++ b/deps/uv/test/test-tcp-close-accept.c
@@ -191,4 +191,8 @@ TEST_IMPL(tcp_close_accept) {
   return 0;
 }
 
-#endif  /* !_WIN32 */
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
+#endif /* !_WIN32 */
diff --git a/deps/uv/test/test-tcp-oob.c b/deps/uv/test/test-tcp-oob.c
index ca2361f9bb776d..53f8231e83e497 100644
--- a/deps/uv/test/test-tcp-oob.c
+++ b/deps/uv/test/test-tcp-oob.c
@@ -138,4 +138,9 @@ TEST_IMPL(tcp_oob) {
   MAKE_VALGRIND_HAPPY();
   return 0;
 }
-#endif
+
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
+#endif /* !_WIN32 */
diff --git a/deps/uv/test/test-tcp-write-after-connect.c b/deps/uv/test/test-tcp-write-after-connect.c
index aa03228f134c15..8198e7e184d5e4 100644
--- a/deps/uv/test/test-tcp-write-after-connect.c
+++ b/deps/uv/test/test-tcp-write-after-connect.c
@@ -65,4 +65,8 @@ TEST_IMPL(tcp_write_after_connect) {
   return 0;
 }
 
-#endif
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
+#endif /* !_WIN32 */
diff --git a/deps/uv/test/test-tty.c b/deps/uv/test/test-tty.c
index 979a6ec38d7fcd..688711e5082116 100644
--- a/deps/uv/test/test-tty.c
+++ b/deps/uv/test/test-tty.c
@@ -315,10 +315,8 @@ TEST_IMPL(tty_raw_cancel) {
   int r;
   int ttyin_fd;
   uv_tty_t tty_in;
-  uv_loop_t* loop;
   HANDLE handle;
 
-  loop = uv_default_loop();
   /* Make sure we have an FD that refers to a tty */
   handle = CreateFileA("conin$",
                        GENERIC_READ | GENERIC_WRITE,
diff --git a/deps/uv/test/test.gyp b/deps/uv/test/test.gyp
index 098512208c3cf8..ae7dc0d628f6e4 100644
--- a/deps/uv/test/test.gyp
+++ b/deps/uv/test/test.gyp
@@ -34,6 +34,7 @@
         'test-fs.c',
         'test-fs-copyfile.c',
         'test-fs-event.c',
+        'test-fs-poll.c',
         'test-getters-setters.c',
         'test-get-currentexe.c',
         'test-get-memory.c',
@@ -96,7 +97,7 @@
         'test-signal-multiple-loops.c',
         'test-socket-buffer-size.c',
         'test-spawn.c',
-        'test-fs-poll.c',
+        'test-strscpy.c',
         'test-stdio-over-pipes.c',
         'test-tcp-alloc-cb-fail.c',
         'test-tcp-bind-error.c',
diff --git a/deps/uv/uv.gyp b/deps/uv/uv.gyp
index 746d1ed5416322..0836dd27f2b72a 100644
--- a/deps/uv/uv.gyp
+++ b/deps/uv/uv.gyp
@@ -74,6 +74,8 @@
         'src/idna.h',
         'src/inet.c',
         'src/queue.h',
+        'src/strscpy.c',
+        'src/strscpy.h',
         'src/threadpool.c',
         'src/timer.c',
         'src/uv-data-getter-setters.c',