# C.bindAddress

Bind a function at its current runtime address.

```js
client.bindAddress(address, signature)
```

## Arguments

| Argument | Type | Meaning |
| --- | --- | --- |
| `address` | string | Nonzero hexadecimal address in this process, aligned to 4 bytes. |
| `signature` | object | Required returns and args (array of fixed native type names). Optional ownership (borrowed/retained for object results) and captureErrno (boolean). library must be omitted. |

## Returns

Callable bound function with release().

## Example

```js
// Only after obtaining and verifying this address and native signature.
function bindVerifiedAddress(address) {
  return C.bindAddress(address, {returns: "int32", args: []});
}
```

## Notes

Advanced API: the declared types must match the real native function. Wrong signatures/addresses can crash the target. No variadic functions, callbacks or arbitrary custom structures. Calls run on the target main thread. See [C functions and memory](/doc/native) for types and ownership. Omit library. ASLR/process restarts invalidate saved addresses; executable memory alone does not prove a valid function entry.

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