Auto merge of #68154 - ssomers:btreemap_navigation_benches, r=Mark-Simulacrum

[rust.git] / src / librustc_error_codes / error_codes / E0648.md

`export_name` attributes may not contain null characters (`\0`).

```compile_fail,E0648
#[export_name="\0foo"] // error: `export_name` may not contain null characters
pub fn bar() {}
```