When was this? Rust has been able to pretend to be C for years, now, and debugs pretty ok. However until last year you could not do things like call functions (

When was this? Rust has been able to pretend to be C for years, now, and debugs pretty ok. However until last year you could not do things like call functions (in gdb, lldb doesn't have support yet). We're now moving towards making Rust have Rust-specific debuginfo for a better debugging experience. tromey (who has commented below) is working on this both for lldb and gdb.