pub fn return_address() -> *const ()🔬This is a nightly-only experimental API. (
core_intrinsics)Expand description
Returns the return address of the caller function (after inlining) in a best-effort manner or a null pointer if it is not supported on the current backend. Returning an accurate value is a quality-of-implementation concern, but no hard guarantees are made about the return value: formally, the intrinsic non-deterministically returns an arbitrary pointer without provenance.
Note that unlike most intrinsics, this is safe to call. This is because it only finds the return address of the immediate caller, which is guaranteed to be possible. Other forms of the corresponding gcc or llvm intrinsic (which can have wildly unpredictable results or even crash at runtime) are not exposed.