1 files changed, 8 insertions, 15 deletions
diff --git a/Utilities/cmlibuv/include/uv/win.h b/Utilities/cmlibuv/include/uv/win.h
index 9b5d5dc63a..e3fe37d50e 100644
--- a/Utilities/cmlibuv/include/uv/win.h
+++ b/Utilities/cmlibuv/include/uv/win.h
@@ -274,21 +274,14 @@ typedef union {
   } unused_; /* TODO: retained for ABI compatibility; remove me in v2.x. */
 } uv_cond_t;
 
-typedef union {
-  struct {
-    unsigned int num_readers_;
-    CRITICAL_SECTION num_readers_lock_;
-    HANDLE write_semaphore_;
-  } state_;
-  /* TODO: remove me in v2.x. */
-  struct {
-    SRWLOCK unused_;
-  } unused1_;
-  /* TODO: remove me in v2.x. */
-  struct {
-    uv_mutex_t unused1_;
-    uv_mutex_t unused2_;
-  } unused2_;
+typedef struct {
+  SRWLOCK read_write_lock_;
+  /* TODO: retained for ABI compatibility; remove me in v2.x */
+#ifdef _WIN64
+  unsigned char padding_[72];
+#else
+  unsigned char padding_[44];
+#endif
 } uv_rwlock_t;
 
 typedef struct {