#![feature(prelude_import)]
#![no_std]
// main.rs

#![feature(postfix_match)]
#[prelude_import]
use ::std::prelude::rust_2015::*;
#[macro_use]
extern crate std;

macro_rules! repro { ($e:expr) => { $e.match { _ => {} } }; }

fn main() { { 1 } + 1.match { _ => {} }; }

error: leading `+` is not supported
  --> <anon>:13:19
   |
13 | fn main() { { 1 } + 1.match { _ => {} }; }
   |                   ^ unexpected `+`
   |
help: parentheses are required to parse this as an expression
   |
13 | fn main() { ({ 1 }) + 1.match { _ => {} }; }
   |             +     +