Like `transmute`, but even less checked at compile-time: rather than giving an error for `size_of::<Src>() != size_of::<Dst>()`, it’s Undefined Behavior at runtime.

Returns whether we should perform some UB-checking at runtime. This eventually evaluates to `cfg!(ub_checks)`, but behaves different from `cfg!` when mixing crates built with different flags: if the crate has UB checks enabled or carries the `#[rustc_preserve_ub_checks]` attribute, evaluation is delayed until monomorphization (or until the call gets inlined into a crate that does not delay evaluation further); otherwise it can happen any time.

Creates a new iterator that endlessly repeats a single element.

Performs an unchecked right shift, resulting in undefined behavior when `y < 0` or `y >= N`, where N is the width of T in bits.

Copies the entire contents of a reader into a writer.

A marker for tuple types.

A marker for types which can be used as types of `const` generic parameters.

Compiler-internal trait used to indicate the type of enum discriminants.

A trait to borrow the socket from an underlying object.

A trait to express the ability to consume an object and acquire ownership of its raw `HANDLE`.