From 4548ee03f1e6495751dfe31fa2bf416819257ce4 Mon Sep 17 00:00:00 2001
From: Qingning Huo <qingninghuo@gmail.com>
Date: Tue, 13 Mar 2012 23:28:44 +0000
Subject: Add a Windows version of SetCloseOnExec()

---
 src/util.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/util.cc b/src/util.cc
index 02be994..4d9adf3 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -197,9 +197,10 @@ void SetCloseOnExec(int fd) {
       perror("fcntl(F_SETFD)");
   }
 #else
-  // On Windows, handles must be explicitly marked to be passed to a
-  // spawned process, so there's nothing to do here.
-  NINJA_UNUSED_ARG(fd);
+  HANDLE hd = (HANDLE) _get_osfhandle(fd);
+  if (! SetHandleInformation(hd, HANDLE_FLAG_INHERIT, 0)) {
+    fprintf(stderr, "SetHandleInformation(): %s", GetLastErrorString().c_str());
+  }
 #endif  // ! _WIN32
 }
 
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