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#[macro_use]
extern crate error_chain;
use std::mem::{size_of, size_of_val};
error_chain! {
errors {
AVariant
Another
}
}
fn main() {
println!("Memory usage in bytes");
println!("---------------------");
println!("Result<()>: {}", size_of::<Result<()>>());
println!(" (): {}", size_of::<()>());
println!(" Error: {}", size_of::<Error>());
println!(" ErrorKind: {}", size_of::<ErrorKind>());
let msg = ErrorKind::Msg("test".into());
println!(" ErrorKind::Msg: {}", size_of_val(&msg));
println!(" String: {}", size_of::<String>());
println!(" State: {}", size_of::<error_chain::State>());
let state = error_chain::State {
next_error: None,
backtrace: error_chain::InternalBacktrace::new(),
};
println!(" State.next_error: {}", size_of_val(&state.next_error));
println!(" State.backtrace: {}", size_of_val(&state.backtrace));
}