From e270f5379bd794391e9a8f1be7f9aa17f0d7dd97 Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Fri, 5 Jul 2013 11:48:09 -0400
Subject: Add gs_transfer_out_value() macro

A simple macro to help with out parameters.
---
 libgsystem.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libgsystem.h b/libgsystem.h
index c7aea6c..60884b6 100644
--- a/libgsystem.h
+++ b/libgsystem.h
@@ -25,6 +25,14 @@
 
 G_BEGIN_DECLS
 
+#define gs_transfer_out_value(outp, srcp) G_STMT_START {   \
+  if (outp)                                                \
+    {                                                      \
+      *(outp) = *(srcp);                                   \
+      *(srcp) = NULL;                                      \
+    }                                                      \
+  } G_STMT_END;
+
 #include <gsystem-console.h>
 #include <gsystem-file-utils.h>
 #include <gsystem-shutil.h>
-- 
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