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38 lines
1.2 KiB
Rust
38 lines
1.2 KiB
Rust
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// Copyright 2018 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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// New test for #53818: modifying static memory at compile-time is not allowed.
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// The test should never succeed.
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#![feature(const_raw_ptr_deref)]
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#![feature(const_let)]
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use std::cell::UnsafeCell;
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struct Foo(UnsafeCell<u32>);
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unsafe impl Send for Foo {}
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unsafe impl Sync for Foo {}
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static FOO: Foo = Foo(UnsafeCell::new(42));
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static BAR: () = unsafe {
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*FOO.0.get() = 5;
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//~^ ERROR calls in statics are limited to constant functions, tuple structs and tuple variants
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// This error is caused by a separate bug that the feature gate error is reported
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// even though the feature gate "const_let" is active.
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//~| statements in statics are unstable (see issue #48821)
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};
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fn main() {
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println!("{}", unsafe { *FOO.0.get() });
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}
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