rust/src/test/compile-fail/const-fn-not-safe-for-const.rs

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// Copyright 2015 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.
// Test that we can't call random fns in a const fn or do other bad things.
#![feature(const_fn)]
use std::mem::transmute;
fn random() -> u32 { 0 }
const fn sub(x: &u32) -> usize {
unsafe { transmute(x) } //~ ERROR E0015
}
const fn sub1() -> u32 {
random() //~ ERROR E0015
}
static Y: u32 = 0;
const fn get_Y() -> u32 {
Y
//~^ ERROR E0013
//~| ERROR cannot refer to other statics by value
}
const fn get_Y_addr() -> &'static u32 {
&Y
//~^ ERROR E0013
}
fn main() {
}