marcothms/brainfuck-rs
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fix: use correct idx into memory for loops

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Marco Thomas
2025-04-22 09:27:59 +09:00
parent 7286f3ac3f
commit 638c2a0e96
1 changed files with 3 additions and 2 deletions
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5
src/main.rs
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@@ -22,7 +22,7 @@ fn interpret(code: &str) {
} }
'[' => { '[' => {
// loop start // loop start
if memory[pc] == 0 { if memory[head] == 0 {
let mut count_brackets = 1; let mut count_brackets = 1;
// find nested brackets // find nested brackets
@@ -47,7 +47,8 @@ fn interpret(code: &str) {
} }
']' => { ']' => {
// loop terminator // loop terminator
if memory[pc] != 0 { if memory[head] != 0 {
// jump back to loop beginning
if let Some(start_pc) = loop_stack.last() { if let Some(start_pc) = loop_stack.last() {
pc = *start_pc; pc = *start_pc;
} else { } else {