From 473cb199e7741e88f210b904fecccf0129b4da59 Mon Sep 17 00:00:00 2001
From: Luke Gorrie <luke@snabb.co>
Date: Thu, 10 May 2018 10:11:49 +0000
Subject: [PATCH] lj_ctype.c: Avoid crash when printing unprintable ctype IDs

---
 src/lj_ctype.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lj_ctype.c b/src/lj_ctype.c
index fc9563b398..86abbbc146 100644
--- a/src/lj_ctype.c
+++ b/src/lj_ctype.c
@@ -529,8 +529,8 @@ static void ctype_repr(CTRepr *ctr, CTypeID id)
       ctype_appc(ctr, ')');
       break;
     default:
-      lua_assert(0);
-      break;
+      ctr->ok = 0;
+      return;
     }
     ct = ctype_get(ctr->cts, ctype_cid(info));
   }