# V8038\. A parameter is always rewritten in the function body before being used\.

The analyzer has detected a parameter that is overwritten before being used\. As a result, the value passed to the function is ignored\.

The example:

```cpp
func Apply(a Node, b Node) {
  a = SkipParenthesize(a)
  b = SkipParenthesize(a)

  // ....
}
```

The typo causes the value of `b` to be evaluated using the `a` parameter instead\.

The fixed code:

```cpp
func Apply(a Node, b Node) {
  a = SkipParenthesize(a)
  b = SkipParenthesize(b)

  // ....
}
```