43 lines
1.5 KiB
Rust
43 lines
1.5 KiB
Rust
//@ compile-flags: -Zunleash-the-miri-inside-of-you
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//@ normalize-stderr-test "(the raw bytes of the constant) \(size: [0-9]*, align: [0-9]*\)" -> "$1 (size: $$SIZE, align: $$ALIGN)"
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//@ normalize-stderr-test "([0-9a-f][0-9a-f] |╾─*ALLOC[0-9]+(\+[a-z0-9]+)?(<imm>)?─*╼ )+ *│.*" -> "HEX_DUMP"
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#![deny(const_eval_mutable_ptr_in_final_value)]
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use std::cell::UnsafeCell;
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// a test demonstrating what things we could allow with a smarter const qualification
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static FOO: &&mut u32 = &&mut 42;
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//~^ ERROR encountered mutable pointer in final value of static
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//~| WARNING this was previously accepted by the compiler
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static BAR: &mut () = &mut ();
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//~^ ERROR encountered mutable pointer in final value of static
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//~| WARNING this was previously accepted by the compiler
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struct Foo<T>(T);
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static BOO: &mut Foo<()> = &mut Foo(());
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//~^ ERROR encountered mutable pointer in final value of static
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//~| WARNING this was previously accepted by the compiler
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struct Meh {
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x: &'static UnsafeCell<i32>,
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}
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unsafe impl Sync for Meh {}
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static MEH: Meh = Meh { x: &UnsafeCell::new(42) };
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//~^ ERROR encountered mutable pointer in final value of static
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//~| WARNING this was previously accepted by the compiler
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static OH_YES: &mut i32 = &mut 42;
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//~^ ERROR encountered mutable pointer in final value of static
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//~| WARNING this was previously accepted by the compiler
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//~| ERROR it is undefined behavior to use this value
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fn main() {
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unsafe {
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*MEH.x.get() = 99;
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}
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*OH_YES = 99; //~ ERROR cannot assign to `*OH_YES`, as `OH_YES` is an immutable static item
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}
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