fix binding bug

src/main.rs

@@ -75,12 +75,12 @@ pub fn run(src: &'static str) {
 pub fn main() {
     env::set_var("RUST_BACKTRACE", "1");
     let src = "
-fn add_one (x) -> add (x, 1)
+let whatevs = nil
-fn double (x) -> add (x, x)
+let mult_factor = 3
-fn square (x) -> mult (x, x)
+fn mymult (x) -> mult (x, mult_factor)
-
+fn thing (x) -> mymult (x)
-double (2)
+ 
-
+thing (2)
 ";
     run(src);
 }

src/vm.rs

@@ -896,7 +896,7 @@ impl Vm {
                             let mut frame = CallFrame {
                                 function: val,
                                 arity,
-                                stack_base: self.stack.len() - arity as usize,
+                                stack_base: self.stack.len() - arity as usize - 1,
                                 ip: 0,
                             };
 
@@ -976,7 +976,7 @@ impl Vm {
                             let mut frame = CallFrame {
                                 function: val,
                                 arity,
-                                stack_base: self.stack.len() - arity as usize,
+                                stack_base: self.stack.len() - arity as usize - 1,
                                 ip: 0,
                             };
 
@@ -1057,8 +1057,6 @@ impl Vm {
                 GetUpvalue => {
                     let idx = self.chunk().bytecode[self.ip + 1];
                     self.ip += 2;
-                    println!("getting upvalue {idx}");
-                    dbg!(&self.frame.function);
                     if let Value::Fn(ref inner) = self.frame.function {
                         self.push(inner.as_ref().upvalue(idx));
                     } else {