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.