Given some code like:

fn main() { foo(Some(42)); } fn foo(bar: Option<u32>) -> u8 { match bar { Some(42) => 1, Some(_) => 2, None => 3, } }

Stepping into foo, I would expect the sequence of executed lines to look like 6 -> 7 -> 11 but it currently is 7 -> 6 -> 11 which doesn't make much sense.

This behavior appears in all debuggers with any of stable (1.54), beta (1.55) or nightly (1.56) compilers.