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Rollup merge of #97269 - RalfJung:transmute, r=m-ou-se

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adjust transmute const stabilization version

With 1.46, this became callable only in `const`/`static` items.

Only since 1.56 is this callable in `const fn`: [changelog](https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1560-2021-10-21)

Also see [Zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/122651-general/topic/transmute.20const.20fn.20stabilization).
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Yuki Okushi 2022-06-21 20:08:08 +09:00 committed by GitHub
commit b20aff2b33
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library/core/src/intrinsics.rs
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@ -1144,7 +1144,7 @@ extern "rust-intrinsic" {
/// }
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(feature = "const_transmute", since = "1.46.0")]
#[rustc_const_stable(feature = "const_transmute", since = "1.56.0")]
#[rustc_diagnostic_item = "transmute"]
pub fn transmute<T, U>(e: T) -> U;