From 1f8564ffaebdc67313559d29521535d6905322e1 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 21 Sep 2021 16:55:18 +0930
Subject: [PATCH] type_to_string: detect type failure in DEVELOPER mode.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 common/type_to_string.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/type_to_string.c b/common/type_to_string.c
index 82affe9f0..c1642f1e1 100644
--- a/common/type_to_string.c
+++ b/common/type_to_string.c
@@ -33,6 +33,9 @@ const char *type_to_string_(const tal_t *ctx,  const char *typename,
 			break;
 		}
 	}
+#if DEVELOPER
+	assert(s);
+#endif
 	if (!s)
 		s = tal_fmt(ctx, "UNKNOWN TYPE %s", typename);