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//@ compile-flags: -Zunleash-the-miri-inside-of-you
//@ normalize-stderr: "(the raw bytes of the constant) \(size: [0-9]*, align: [0-9]*\)" -> "$1 (size: $$SIZE, align: $$ALIGN)"
//@ normalize-stderr: "([0-9a-f][0-9a-f] |╾─*ALLOC[0-9]+(\+[a-z0-9]+)?(<imm>)?─*╼ )+ *│.*" -> "HEX_DUMP"
//@ dont-require-annotations: NOTE
use std::sync::atomic::AtomicUsize;
use std::sync::atomic::Ordering;
const MUTATE_INTERIOR_MUT: usize = {
static FOO: AtomicUsize = AtomicUsize::new(0);
FOO.fetch_add(1, Ordering::Relaxed) //~ERROR calling non-const function `AtomicUsize::fetch_add`
};
const READ_INTERIOR_MUT: usize = {
static FOO: AtomicUsize = AtomicUsize::new(0);
unsafe { *(&FOO as *const _ as *const usize) } //~ERROR constant accesses mutable global memory
};
static mut MUTABLE: u32 = 0;
const READ_MUT: u32 = unsafe { MUTABLE }; //~ERROR constant accesses mutable global memory
// Evaluating this does not read anything mutable, but validation does, so this should error.
const REF_INTERIOR_MUT: &usize = {
static FOO: AtomicUsize = AtomicUsize::new(0);
unsafe { &*(&FOO as *const _ as *const usize) }
};
// Not actually reading from anything mutable, so these are fine.
static MY_STATIC: u8 = 4;
const REF_IMMUT: &u8 = &MY_STATIC;
const READ_IMMUT: u8 = *REF_IMMUT;
fn foo() {
match &0 {
REF_INTERIOR_MUT => {}, //~ ERROR cannot be used as pattern
_ => {},
}
}
fn main() {}
//~? WARN skipping const checks
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