mark functions with const and pure attributes

[gnulib.git] / lib / i-ring.h

diff --git a/lib/i-ring.h b/lib/i-ring.h
index f0700b6..ae81f68 100644 (file)
--- a/lib/i-ring.h
+++ b/lib/i-ring.h
@@ -41,4 +41,4 @@ typedef struct I_ring I_ring;
 void i_ring_init (I_ring *ir, int ir_default_val);
 int i_ring_push (I_ring *ir, int val);
 int i_ring_pop (I_ring *ir);
-bool i_ring_empty (I_ring const *ir);
+bool i_ring_empty (I_ring const *ir) _GL_ATTRIBUTE_PURE;