From ce1d0951bdf4d83060d9fa691091d6059ad9f6d3 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A9r=C3=A9mie=20Astor?= <astor.jeremie@wanadoo.fr>
Date: Mon, 13 Apr 2020 18:40:08 +0200
Subject: [PATCH] :bomb: Unamed union must be unique

---
 src/parse/scan0.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/parse/scan0.c b/src/parse/scan0.c
index ce12253b..2481ff82 100644
--- a/src/parse/scan0.c
+++ b/src/parse/scan0.c
@@ -281,6 +281,7 @@ ANN m_bool scan0_union_def(const Env env, const Union_Def udef) {
     SET_FLAG(udef->type, checked);
   } else {
     const Symbol sym = scan0_sym(env, "union", udef->pos);
+    CHECK_BB(scan0_defined(env, sym, udef->pos))
     const Type t = union_type(env, sym, 1);
     udef->value = union_value(env, t, sym);
     udef->value->flag |= udef->flag;
-- 
2.43.0