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-rw-r--r--lib/memcmp2.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/memcmp2.h b/lib/memcmp2.h
index c00e1418..ee842d9a 100644
--- a/lib/memcmp2.h
+++ b/lib/memcmp2.h
@@ -1,5 +1,5 @@
/* Compare two memory areas with possibly different lengths.
- Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
@@ -29,7 +29,8 @@ extern "C" {
This function's result is locale independent, unlike memcoll()'s.
Return a negative number if S1 < S2, a positive number if S1 > S2, or
0 if S1 and S2 have the same contents. */
-extern int memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2);
+extern int memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2)
+ _GL_ATTRIBUTE_PURE;
#ifdef __cplusplus