76 lines
1.9 KiB
Rust
76 lines
1.9 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(unused)]
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#![feature(core_intrinsics)]
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extern crate core;
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use std::intrinsics::{init, uninit};
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fn main() {
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let x = 1;
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unsafe {
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ref_to_zeroed_std(&x);
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ref_to_zeroed_core(&x);
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ref_to_zeroed_intr(&x);
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ref_to_uninit_std(&x);
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ref_to_uninit_core(&x);
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ref_to_uninit_intr(&x);
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some_ref();
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std_zeroed_no_ref();
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core_zeroed_no_ref();
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intr_init_no_ref();
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}
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}
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unsafe fn ref_to_zeroed_std<T: ?Sized>(t: &T) {
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let ref_zero: &T = std::mem::zeroed(); // warning
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}
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unsafe fn ref_to_zeroed_core<T: ?Sized>(t: &T) {
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let ref_zero: &T = core::mem::zeroed(); // warning
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}
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unsafe fn ref_to_zeroed_intr<T: ?Sized>(t: &T) {
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let ref_zero: &T = std::intrinsics::init(); // warning
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}
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unsafe fn ref_to_uninit_std<T: ?Sized>(t: &T) {
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let ref_uninit: &T = std::mem::uninitialized(); // warning
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}
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unsafe fn ref_to_uninit_core<T: ?Sized>(t: &T) {
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let ref_uninit: &T = core::mem::uninitialized(); // warning
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}
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unsafe fn ref_to_uninit_intr<T: ?Sized>(t: &T) {
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let ref_uninit: &T = std::intrinsics::uninit(); // warning
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}
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fn some_ref() {
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let some_ref = &1;
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}
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unsafe fn std_zeroed_no_ref() {
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let mem_zero: usize = std::mem::zeroed(); // no warning
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}
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unsafe fn core_zeroed_no_ref() {
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let mem_zero: usize = core::mem::zeroed(); // no warning
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}
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unsafe fn intr_init_no_ref() {
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let mem_zero: usize = std::intrinsics::init(); // no warning
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}
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