X-Git-Url: http://erislabs.net/gitweb/?p=gnulib.git;a=blobdiff_plain;f=lib%2Fobstack.h;h=da45427f86de03255a7c6ca214d12bdcfcec26a3;hp=7cf98edbd2c07510aa923cca37075a67f5321827;hb=c2b08ae26cdc70a3acf7d1bc15bc77c92bbcc97c;hpb=9f15e6702a27649a59263a7ed571805a979d9e70

diff --git a/lib/obstack.h b/lib/obstack.h
index 7cf98edbd..da45427f8 100644
--- a/lib/obstack.h
+++ b/lib/obstack.h
@@ -183,7 +183,7 @@ extern int _obstack_begin (struct obstack *, int, int,
 extern int _obstack_begin_1 (struct obstack *, int, int,
                              void *(*) (void *, long),
                              void (*) (void *, void *), void *);
-extern int _obstack_memory_used (struct obstack *);
+extern int _obstack_memory_used (struct obstack *) _GL_ATTRIBUTE_PURE;
 
 /* The default name of the function for freeing a chunk is 'obstack_free',
    but gnulib users can override this by defining '__obstack_free'.  */