mirror of https://github.com/rust-lang/rust
25 lines
606 B
Rust
25 lines
606 B
Rust
//@ check-pass
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// https://github.com/rust-lang/rust/issues/113257
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#![deny(trivial_casts)] // The casts here are not trivial.
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struct Foo<'a> { a: &'a () }
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fn extend_lifetime_very_very_safely<'a>(v: *const Foo<'a>) -> *const Foo<'static> {
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// This should pass because raw pointer casts can do anything they want.
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v as *const Foo<'static>
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}
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trait Trait {}
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fn assert_static<'a>(ptr: *mut (dyn Trait + 'a)) -> *mut (dyn Trait + 'static) {
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ptr as _
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}
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fn main() {
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let unit = ();
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let foo = Foo { a: &unit };
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let _long: *const Foo<'static> = extend_lifetime_very_very_safely(&foo);
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}
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