Get the Location of a Calling Function in Rust

September 2025

Use #[track_caller] and std::panic::Location::caller() to get the file and location of where a funciton was called.

fn main() {
  ping();
  alfa();
}

fn alfa() {
  ping();
}

#[track_caller]
fn ping() {
  let caller = std::panic::Location::caller();
  println!("Caller: {}", caller);
}

Output:

Caller: example.rs:2:3
Caller: example.rs:7:3

end of line

References

std::panic::Location - rust docs

How can I access a function's calling location each time it's called? - Stack Overflow

The page where I found out how to do this.