From 028d89f9437e8fb25fd3fd67bcdd158819ce8557 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@gnu.org>
Date: Mon, 8 May 2006 00:10:21 +0000
Subject: [PATCH] New macro WARN_UNUSED_RESULT.

---
 src/libpspp/ChangeLog  | 4 ++++
 src/libpspp/compiler.h | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/src/libpspp/ChangeLog b/src/libpspp/ChangeLog
index ca11f306..31097a10 100644
--- a/src/libpspp/ChangeLog
+++ b/src/libpspp/ChangeLog
@@ -1,3 +1,7 @@
+Sun May  7 17:09:54 2006  Ben Pfaff  <blp@gnu.org>
+
+	* compiler.h: (macro WARN_UNUSED_RESULT) New macro.
+
 Sun May  7 14:32:25 2006  Ben Pfaff  <blp@gnu.org>
 
 	* va_copy.h: New header.
diff --git a/src/libpspp/compiler.h b/src/libpspp/compiler.h
index 44f22b39..8c2c3abd 100644
--- a/src/libpspp/compiler.h
+++ b/src/libpspp/compiler.h
@@ -44,4 +44,11 @@
 #define MALLOC_LIKE
 #endif
 
+/* This attribute was added in GCC 4.0. */
+#if __GNUC__ >= 4
+#define WARN_UNUSED_RESULT ATTRIBUTE ((warn_unused_result))
+#else
+#define WARN_UNUSED_RESULT
+#endif
+
 #endif /* compiler.h */
-- 
2.30.2