1 An unknown argument was given to the `inline` attribute.
3 Erroneous code example:
5 ```ignore (compile_fail not working here; see Issue #43707)
6 #[inline(unknown)] // error: invalid argument
12 The `inline` attribute only supports two arguments:
17 All other arguments given to the `inline` attribute will return this error.
21 #[inline(never)] // ok!
27 For more information about the inline attribute, https:
28 read://doc.rust-lang.org/reference.html#inline-attributes