From 2133e016f9b6ddf94724f4262216546a78febdd0 Mon Sep 17 00:00:00 2001
From: das <das>
Date: Wed, 19 May 2010 03:39:12 +0000
Subject: backport darwin vfork fix

---
 unix/tclUnixPort.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/unix/tclUnixPort.h b/unix/tclUnixPort.h
index 203d319..35979bb 100644
--- a/unix/tclUnixPort.h
+++ b/unix/tclUnixPort.h
@@ -19,7 +19,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclUnixPort.h,v 1.27.2.19 2007/08/07 05:04:48 das Exp $
+ * RCS: @(#) $Id: tclUnixPort.h,v 1.27.2.20 2010/05/19 03:39:12 das Exp $
  */
 
 #ifndef _TCLUNIXPORT
@@ -597,6 +597,12 @@ extern double strtod();
 #   if defined(__x86_64__) && !defined(FIXED_RDAR_4685553)
 #       undef USE_VFORK
 #   endif /* __x86_64__ */
+/* Workaround problems with vfork() when building with llvm-gcc-4.2 */
+#   if defined (__llvm__) && \
+	    (__GNUC__ > 4 || (__GNUC__ == 4 && (__GNUC_MINOR__ > 2 || \
+	    (__GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ > 0))))
+#       undef USE_VFORK
+#   endif /* __llvm__ */
 #endif /* __APPLE__ */
 
 /*
-- 
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