mirror of https://github.com/rust-lang/rust
22 lines
830 B
Rust
22 lines
830 B
Rust
//@ 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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#![feature(const_refs_to_static, const_mut_refs, sync_unsafe_cell)]
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use std::cell::SyncUnsafeCell;
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static S: SyncUnsafeCell<i32> = SyncUnsafeCell::new(0);
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static mut S_MUT: i32 = 0;
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const C1: &SyncUnsafeCell<i32> = &S; //~ERROR undefined behavior
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//~| encountered reference to mutable memory
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const C1_READ: () = unsafe {
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assert!(*C1.get() == 0);
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};
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const C2: *const i32 = unsafe { std::ptr::addr_of!(S_MUT) };
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const C2_READ: () = unsafe {
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assert!(*C2 == 0); //~ERROR evaluation of constant value failed
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//~^ constant accesses mutable global memory
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};
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fn main() {
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}
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