Regression (rustc): Formatting UFCS function calls produces invalid code (needstest)

[pyfisch]

fn header_name<T: Header>() -> &'static str {
    let name = <T as Header>::header_name();
    name
}

is formatted to

fn header_name<T: Header>() -> &'static str {
    let name = <();
    name
}

which is clearly not intended.

[defyrlt]

I ran this through idempotent tests and got this:

fn header_name<T: Header>() -> &'static str {
    let name = <T as Header>::header_name(();
    name
}

UPD: my rustc was kinda outdated
rustc 1.1.0-nightly (5fb0259ed 2015-04-26) (built 2015-04-27)
so now with
rustc 1.1.0-nightly (c42c1e7a6 2015-05-02) (built 2015-05-02)
I'm getting the same thing

fn header_name<T: Header>() -> &'static str {
    let name = <();
    name
}

[nrc]

Given that this is caused by a regression in rustc (by the sounds of it), I'm going to put money on this being due to an incorrect span from the parser.

[marcusklaas]

I've opened an issue for this here: rust-lang/rust#25969.

[marcusklaas]

The underlying issue has been resolved: rust-lang/rust#25994. I can confirm that the test case above is now formatted correctly when using the master branch of rustc.

[nrc]

This just needs a test now. (thanks for fixing the rustc bug @marcusklaas)

[nrc]

Closed by #97