From: Eric Blake <eblake@redhat.com>
Date: Fri, 15 Oct 2010 22:05:27 +0000 (-0600)
Subject: ignore-value: make header idempotent
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cac3889c1830d38e5b55ae69fc3d458498a0b33e;p=pspp

ignore-value: make header idempotent

* lib/ignore-value.h: Add double-inclusion guards.
Reported by Stefan Berger.

Signed-off-by: Eric Blake <eblake@redhat.com>
---

diff --git a/ChangeLog b/ChangeLog
index 40ca4066fa..3b928312ee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-10-15  Eric Blake  <eblake@redhat.com>
+
+	ignore-value: make header idempotent
+	* lib/ignore-value.h: Add double-inclusion guards.
+	Reported by Stefan Berger.
+
 2010-10-15  Jim Meyering  <meyering@redhat.com>
 
 	GNUmakefile: handle "stable" target, not "major"
diff --git a/lib/ignore-value.h b/lib/ignore-value.h
index 2eb6918db5..b0088dd9bf 100644
--- a/lib/ignore-value.h
+++ b/lib/ignore-value.h
@@ -32,6 +32,11 @@
    "copy.c:233: warning: ignoring return value of 'fchown',
    declared with attribute warn_unused_result".  */
 
+#ifndef _GL_IGNORE_VALUE_H
+# define _GL_IGNORE_VALUE_H
+
 static inline void ignore_value (int i) { (void) i; }
 static inline void ignore_ptr (void* p) { (void) p; }
 /* FIXME: what about aggregate types? */
+
+#endif