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ICE using <T as Fn()>::call #39687

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ICE using <T as Fn()>::call#39687
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C-bugCategory: This is a bug.E-needs-testCall for participation: An issue has been fixed and does not reproduce, but no test has been added.

Description

@arielb1
arielb1
opened on Feb 9, 2017

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rustc 1.17.0-nightly (c49d10207 2017-02-07)

STR

#![feature(fn_traits)]

fn main() {
    <fn() as Fn()>::call;
}

Expected Result

Code works

Actual Result

error: internal compiler error: /buildslave/rust-buildbot/slave/nightly-dist-rustc-linux/build/src/librustc_typeck/check/mod.rs:4507: parenthesized parameters cannot appear in ExprPath
 --> <anon>:4:5
  |
4 |     <fn() as Fn()>::call;
  |     ^^^^^^^^^^^^^^^^^^^^

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/nightly-dist-rustc-linux/build/src/librustc_errors/lib.rs:376
note: Run with `RUST_BACKTRACE=1` for a backtrace.

cc @eddyb

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    C-bugCategory: This is a bug.E-needs-testCall for participation: An issue has been fixed and does not reproduce, but no test has been added.

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