From a08f5c301661c2613836bca5f397fc727f765e87 Mon Sep 17 00:00:00 2001
From: Mark Thom <markjordanthom@gmail.com>
Date: Fri, 19 Feb 2021 13:44:22 -0700
Subject: [PATCH] treat LocalCodePtr::Halt received at lookup_local_instr as an
 interrupt (#823)

---
 src/machine/code_repo.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/machine/code_repo.rs b/src/machine/code_repo.rs
index 092f6407..7db42530 100644
--- a/src/machine/code_repo.rs
+++ b/src/machine/code_repo.rs
@@ -24,7 +24,8 @@ impl CodeRepo {
     ) -> RefOrOwned<'a, Line> {
         match p {
             LocalCodePtr::Halt => {
-                unreachable!()
+                // exit with the interrupt exit code.
+                std::process::exit(1);
             }
             LocalCodePtr::DirEntry(p) => {
                 RefOrOwned::Borrowed(&self.code[p as usize])
-- 
2.54.0