1 files changed, 1 insertions, 0 deletions
diff --git a/lib.h b/lib.h
index c9b6198f..8ff88b76 100644
--- a/lib.h
+++ b/lib.h
@@ -1020,6 +1020,7 @@ val cptr(mem_t *ptr);
 val cptr_typed(mem_t *handle, val type_sym, struct cobj_ops *ops);
 val cptrp(val obj);
 val cptr_type(val cptr);
+val cptr_size_hint(val cptr, val size);
 val cptr_int(val n, val type_sym);
 val cptr_obj(val obj, val type_sym);
 val cptr_zap(val cptr);