ran into another type inference problem

src/syntax/validate.rs

@@ -212,6 +212,17 @@ impl Expression {
 
                 (errors, warnings)
             }
+            Expression::Call(_, func, args) => {
+                let (mut errors, mut warnings) = func.validate(variable_map);
+
+                for arg in args.iter() {
+                    let (mut e, mut w) = arg.validate(variable_map);
+                    errors.append(&mut e);
+                    warnings.append(&mut w);
+                }
+
+                (errors, warnings)
+            }
             Expression::Block(_, stmts) => {
                 let mut errors = vec![];
                 let mut warnings = vec![];