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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Companion test to the similarly-named file in run-pass.
// compile-flags: -C debug_assertions=yes
// revisions: std core
#![cfg_attr(core, no_std)]
#[cfg(std)] use std::fmt;
#[cfg(core)] use core::fmt;
// (see documentation of the similarly-named test in run-pass)
fn to_format_or_not_to_format() {
let falsum = || false;
// assert!(true, "{}",); // see run-pass
assert_eq!(1, 1, "{}",);
//[core]~^ ERROR no arguments
//[std]~^^ ERROR no arguments
assert_ne!(1, 2, "{}",);
//[core]~^ ERROR no arguments
//[std]~^^ ERROR no arguments
// debug_assert!(true, "{}",); // see run-pass
debug_assert_eq!(1, 1, "{}",);
//[core]~^ ERROR no arguments
//[std]~^^ ERROR no arguments
debug_assert_ne!(1, 2, "{}",);
//[core]~^ ERROR no arguments
//[std]~^^ ERROR no arguments
#[cfg(std)] {
eprint!("{}",);
//[std]~^ ERROR no arguments
}
#[cfg(std)] {
// FIXME: compile-fail says "expected error not found" even though
// rustc does emit an error
// eprintln!("{}",);
// <DISABLED> [std]~^ ERROR no arguments
}
#[cfg(std)] {
format!("{}",);
//[std]~^ ERROR no arguments
}
format_args!("{}",);
//[core]~^ ERROR no arguments
//[std]~^^ ERROR no arguments
// if falsum() { panic!("{}",); } // see run-pass
#[cfg(std)] {
print!("{}",);
//[std]~^ ERROR no arguments
}
#[cfg(std)] {
// FIXME: compile-fail says "expected error not found" even though
// rustc does emit an error
// println!("{}",);
// <DISABLED> [std]~^ ERROR no arguments
}
unimplemented!("{}",);
//[core]~^ ERROR no arguments
//[std]~^^ ERROR no arguments
// if falsum() { unreachable!("{}",); } // see run-pass
struct S;
impl fmt::Display for S {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}",)?;
//[core]~^ ERROR no arguments
//[std]~^^ ERROR no arguments
// FIXME: compile-fail says "expected error not found" even though
// rustc does emit an error
// writeln!(f, "{}",)?;
// <DISABLED> [core]~^ ERROR no arguments
// <DISABLED> [std]~^^ ERROR no arguments
Ok(())
}
}
}
fn main() {}
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