pty: Activate the signature wrapper of forkpty.

[gnulib.git] / lib / filenamecat-lgpl.c

diff --git a/lib/filenamecat-lgpl.c b/lib/filenamecat-lgpl.c
index 8cb2da4..60c4988 100644 (file)
--- a/lib/filenamecat-lgpl.c
+++ b/lib/filenamecat-lgpl.c
@@ -1,6 +1,6 @@
 /* Concatenate two arbitrary file names.
 
-   Copyright (C) 1996-2007, 2009-2011 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2013 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
@@ -34,7 +34,7 @@
 /* Return the longest suffix of F that is a relative file name.
    If it has no such suffix, return the empty string.  */
 
-static char const *
+static char const * _GL_ATTRIBUTE_PURE
 longest_relative_suffix (char const *f)
 {
   for (f += FILE_SYSTEM_PREFIX_LEN (f); ISSLASH (*f); f++)