From be9cd1e5accd616c9413f0202bc985ebe37027a0 Mon Sep 17 00:00:00 2001
From: _ <_@_>
Date: Sat, 30 Sep 2023 10:09:37 -0500
Subject: [PATCH] :pencil: doc: improve error message

---
 src/state.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/state.rs b/src/state.rs
index c947318..c01390d 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -341,6 +341,7 @@ impl <'a> State <'a> {
 			},
 			Instruction::GetField (a, b, c) => {
 				let t = match self.reg (*b) {
+					Value::Nil => panic! ("R[B] must not be nil {}:{}", frame.block_idx, frame.program_counter),
 					Value::Table (t) => t,
 					_ => panic! ("R[B] must be a table"),
 				};