diff --git a/src/test/ui/consts/const-eval/mod-static-with-const-fn.rs b/src/test/ui/consts/const-eval/mod-static-with-const-fn.rs new file mode 100644 index 0000000000000..d6ffca09e96d8 --- /dev/null +++ b/src/test/ui/consts/const-eval/mod-static-with-const-fn.rs @@ -0,0 +1,37 @@ +// 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 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// New test for #53818: modifying static memory at compile-time is not allowed. +// The test should never succeed. + +#![feature(const_raw_ptr_deref)] +#![feature(const_let)] + +use std::cell::UnsafeCell; + +struct Foo(UnsafeCell); + +unsafe impl Send for Foo {} +unsafe impl Sync for Foo {} + +static FOO: Foo = Foo(UnsafeCell::new(42)); + +static BAR: () = unsafe { + *FOO.0.get() = 5; + //~^ ERROR calls in statics are limited to constant functions, tuple structs and tuple variants + + // This error is caused by a separate bug that the feature gate error is reported + // even though the feature gate "const_let" is active. + //~| statements in statics are unstable (see issue #48821) +}; + +fn main() { + println!("{}", unsafe { *FOO.0.get() }); +} diff --git a/src/test/ui/consts/const-eval/mod-static-with-const-fn.stderr b/src/test/ui/consts/const-eval/mod-static-with-const-fn.stderr new file mode 100644 index 0000000000000..8eaed1dcab116 --- /dev/null +++ b/src/test/ui/consts/const-eval/mod-static-with-const-fn.stderr @@ -0,0 +1,18 @@ +error[E0015]: calls in statics are limited to constant functions, tuple structs and tuple variants + --> $DIR/mod-static-with-const-fn.rs:27:6 + | +LL | *FOO.0.get() = 5; + | ^^^^^^^^^^^ + +error[E0658]: statements in statics are unstable (see issue #48821) + --> $DIR/mod-static-with-const-fn.rs:27:5 + | +LL | *FOO.0.get() = 5; + | ^^^^^^^^^^^^^^^^ + | + = help: add #![feature(const_let)] to the crate attributes to enable + +error: aborting due to 2 previous errors + +Some errors occurred: E0015, E0658. +For more information about an error, try `rustc --explain E0015`.