[PATCH] ignore-value: make header idempotent

[Eric Blake]

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

Signed-off-by: Eric Blake <address@hidden>
---

Now pushed to gnulib.

 ChangeLog          |    6 ++++++
 lib/ignore-value.h |    5 +++++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 40ca406..3b92831 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-10-15  Eric Blake  <address@hidden>
+
+       ignore-value: make header idempotent
+       * lib/ignore-value.h: Add double-inclusion guards.
+       Reported by Stefan Berger.
+
 2010-10-15  Jim Meyering  <address@hidden>

        GNUmakefile: handle "stable" target, not "major"
diff --git a/lib/ignore-value.h b/lib/ignore-value.h
index 2eb6918..b0088dd 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
-- 
1.7.2.3