55 lines
1.5 KiB
Rust
55 lines
1.5 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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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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// Verify that it is not possible to take the address of
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// static items with unsafe interior.
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use std::kinds::marker;
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use std::cell::UnsafeCell;
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struct MyUnsafe<T> {
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value: UnsafeCell<T>
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}
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impl<T> MyUnsafe<T> {
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fn forbidden(&self) {}
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}
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enum UnsafeEnum<T> {
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VariantSafe,
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VariantUnsafe(UnsafeCell<T>)
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}
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static STATIC1: UnsafeEnum<int> = VariantSafe;
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static STATIC2: UnsafeCell<int> = UnsafeCell { value: 1 };
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static STATIC3: MyUnsafe<int> = MyUnsafe{value: STATIC2};
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static STATIC4: &'static UnsafeCell<int> = &STATIC2;
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//~^ ERROR borrow of immutable static items with unsafe interior is not allowed
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struct Wrap<T> {
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value: T
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}
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static UNSAFE: UnsafeCell<int> = UnsafeCell{value: 1};
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static WRAPPED_UNSAFE: Wrap<&'static UnsafeCell<int>> = Wrap { value: &UNSAFE };
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//~^ ERROR borrow of immutable static items with unsafe interior is not allowed
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fn main() {
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let a = &STATIC1;
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//~^ ERROR borrow of immutable static items with unsafe interior is not allowed
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STATIC3.forbidden()
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//~^ ERROR borrow of immutable static items with unsafe interior is not allowed
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}
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