From 638c2a0e96e31376b6ee97b43497fed18c16db0e Mon Sep 17 00:00:00 2001
From: Marco Thomas <github@marcothms.de>
Date: Tue, 22 Apr 2025 09:27:59 +0900
Subject: [PATCH] fix: use correct idx into memory for loops

---
 src/main.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 4476393..04ac4c3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -22,7 +22,7 @@ fn interpret(code: &str) {
             }
             '[' => {
                 // loop start
-                if memory[pc] == 0 {
+                if memory[head] == 0 {
                     let mut count_brackets = 1;
 
                     // find nested brackets
@@ -47,7 +47,8 @@ fn interpret(code: &str) {
             }
             ']' => {
                 // loop terminator
-                if memory[pc] != 0 {
+                if memory[head] != 0 {
+                    // jump back to loop beginning
                     if let Some(start_pc) = loop_stack.last() {
                         pc = *start_pc;
                     } else {