From 5cc58b2fcb3b60b9c52b72cf97856e962b917966 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 6 Jun 2020 18:42:34 +0200
Subject: [PATCH] arb:: verify indexes in Conway

---
 arbitrile.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arbitrile.cpp b/arbitrile.cpp
index ff0a79b1..ccb2ac42 100644
--- a/arbitrile.cpp
+++ b/arbitrile.cpp
@@ -371,6 +371,10 @@ EX void load(const string& fname, bool after_sliding IS(false)) {
           if(ep.eat("@")) bi = ep.iparse();
           }          
         if(ep.eat(")") || ep.eat("]")) {}
+        verify_index(ai, c.shapes, ep);
+        verify_index(as, c.shapes[ai], ep);
+        verify_index(bi, c.shapes, ep);
+        verify_index(bs, c.shapes[bi], ep);
         c.shapes[ai].connections[as] = make_tuple(bi, bs, m);
         c.shapes[bi].connections[bs] = make_tuple(ai, as, m);
         }