add show trait

1 files changed, 2 insertions, 0 deletions

diff --git a/src/vec.c b/src/vec.c
index da3d9e0..9e9abe5 100644
--- a/src/vec.c
+++ b/src/vec.c
@@ -2,6 +2,8 @@
 
 #include <string.h>
 
+#include "basic_traits.h"
+
 VECTOR_IMPL(Int);
 VECTOR_IMPL(Bool);
 VECTOR_IMPL(Long);