# Function std::intrinsics::rustc_peek

source ·

    pub extern "rust-intrinsic" fn rustc_peek<T>(_: T) -> T

🔬This is a nightly-only experimental API. (`core_intrinsics`)
Expand description

Magic intrinsic that derives its meaning from attributes attached to the function.

For example, dataflow uses this to inject static assertions so that `rustc_peek(potentially_uninitialized)` would actually double-check that dataflow did indeed compute that it is uninitialized at that point in the control flow.

This intrinsic should not be used outside of the compiler.