--- a/src/hotspot/os/windows/os_windows.cpp	Thu Jan 10 17:08:44 2019 +0800
+++ b/src/hotspot/os/windows/os_windows.cpp	Thu Jan 17 08:48:11 2019 -0500
@@ -4707,9 +4707,6 @@
 static int nonSeekAvailable(int, long *);
 static int stdinAvailable(int, long *);
 
-#define S_ISCHR(mode)   (((mode) & _S_IFCHR) == _S_IFCHR)
-#define S_ISFIFO(mode)  (((mode) & _S_IFIFO) == _S_IFIFO)
-
 // This code is a copy of JDK's sysAvailable
 // from src/windows/hpi/src/sys_api_md.c