From 0e644e3340d25a649e6f0448097f4776b87f50e8 Mon Sep 17 00:00:00 2001
From: Juan Jose Garcia Ripoll <jjgarcia@users.sourceforge.net>
Date: Sun, 27 Feb 2011 16:23:13 +0100
Subject: [PATCH] Use dup2() instead of dup() when executing child processes
 (more portable, due to use of STD*_FILENO?)

---
 src/c/unixsys.d | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/src/c/unixsys.d b/src/c/unixsys.d
index c8a434999..af095770a 100755
--- a/src/c/unixsys.d
+++ b/src/c/unixsys.d
@@ -549,14 +549,11 @@ make_windows_handle(HANDLE h)
 		/* Child */
 		int j;
 		void **argv_ptr = (void **)argv->vector.self.t;
-		close(0);
-		dup(child_stdin);
+		dup2(child_stdin, STDIN_FILENO);
 		if (parent_write) close(parent_write);
-		close(1);
-		dup(child_stdout);
+		dup2(child_stdout, STDOUT_FILENO);
 		if (parent_read) close(parent_read);
-		close(2);
-		dup(child_stderr);
+		dup2(child_stderr, STDERR_FILENO);
 		for (j = 0; j < argv->vector.fillp; j++) {
 			cl_object arg = argv->vector.self.t[j];
 			if (arg == Cnil) {