From 1726ec2cc7d5e155b4eba333c1500ab4f49835dd Mon Sep 17 00:00:00 2001
From: Chris Fallin <chris@cfallin.org>
Date: Sat, 11 Dec 2021 22:40:01 -0800
Subject: [PATCH] WIP.

---
 src/frontend.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/frontend.rs b/src/frontend.rs
index 9ad5854..0337391 100644
--- a/src/frontend.rs
+++ b/src/frontend.rs
@@ -157,6 +157,9 @@ fn parse_body<'a>(
         log::trace!("checking if block is sealed: {}", block);
         assert!(builder.locals.is_sealed(block));
     }
+    for value in &builder.body.values {
+        assert!(value != &ValueDef::Placeholder);
+    }
 
     trace!("Final function body:{:?}", ret);