Index: llvm/trunk/lib/Support/Windows/Path.inc
===================================================================
--- llvm/trunk/lib/Support/Windows/Path.inc
+++ llvm/trunk/lib/Support/Windows/Path.inc
@@ -721,10 +721,6 @@
 
 std::error_code mapped_file_region::init(int FD, uint64_t Offset,
                                          mapmode Mode) {
-  // Make sure that the requested size fits within SIZE_T.
-  if (Size > std::numeric_limits<SIZE_T>::max())
-    return make_error_code(errc::invalid_argument);
-
   HANDLE FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
   if (FileHandle == INVALID_HANDLE_VALUE)
     return make_error_code(errc::bad_file_descriptor);