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-rw-r--r--lib/fwriting.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/fwriting.h b/lib/fwriting.h
index 13415b9..f4c7ed7 100644
--- a/lib/fwriting.h
+++ b/lib/fwriting.h
@@ -1,5 +1,5 @@
/* Retrieve information about a FILE stream.
- Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -44,7 +44,7 @@
extern "C" {
# endif
-extern bool fwriting (FILE *stream);
+extern bool fwriting (FILE *stream) _GL_ATTRIBUTE_PURE;
# ifdef __cplusplus
}