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