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// ICE: ImmTy { imm: Scalar(alloc1), ty: *const dyn Sync } input to a fat-to-thin cast (*const dyn Sync -> *const usize
// or with -Zextra-const-ub-checks: expected wide pointer extra data (e.g. slice length or trait object vtable)
// issue: rust-lang/rust#121413
//@ compile-flags: -Zextra-const-ub-checks
// ignore-tidy-linelength
const REF_INTERIOR_MUT: &usize = {
//~^ HELP consider importing this struct
static FOO: Sync = AtomicUsize::new(0);
//~^ ERROR failed to resolve: use of undeclared type `AtomicUsize`
//~| WARN trait objects without an explicit `dyn` are deprecated
//~| ERROR the size for values of type `(dyn Sync + 'static)` cannot be known at compilation time
//~| WARN this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
//~| HELP if this is a dyn-compatible trait, use `dyn`
//~| HELP the trait `Sized` is not implemented for `(dyn Sync + 'static)`
unsafe { &*(&FOO as *const _ as *const usize) }
};
pub fn main() {}
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