1 files changed, 4 insertions, 0 deletions
diff --git a/tvix/eval/src/vm.rs b/tvix/eval/src/vm.rs
index 2c490200e1..d42a2e3033 100644
--- a/tvix/eval/src/vm.rs
+++ b/tvix/eval/src/vm.rs
@@ -342,22 +342,26 @@ impl VM {
                 OpCode::OpInterpolate(Count(count)) => self.run_interpolate(count)?,
 
                 OpCode::OpJump(JumpOffset(offset)) => {
+                    debug_assert!(offset != 0);
                     self.frame_mut().ip += offset;
                 }
 
                 OpCode::OpJumpIfTrue(JumpOffset(offset)) => {
+                    debug_assert!(offset != 0);
                     if fallible!(self, self.peek(0).as_bool()) {
                         self.frame_mut().ip += offset;
                     }
                 }
 
                 OpCode::OpJumpIfFalse(JumpOffset(offset)) => {
+                    debug_assert!(offset != 0);
                     if !fallible!(self, self.peek(0).as_bool()) {
                         self.frame_mut().ip += offset;
                     }
                 }
 
                 OpCode::OpJumpIfNotFound(JumpOffset(offset)) => {
+                    debug_assert!(offset != 0);
                     if matches!(self.peek(0), Value::AttrNotFound) {
                         self.pop();
                         self.frame_mut().ip += offset;