too many arguments to fmt!

[inspurhua]

fn main() {
    debug!("{:?}","aa" );
}

when i compile it ,

error: too many arguments to fmt!. found 2, expected 1
:2     debug!("{:?}","aa" );

win7 32bit,rust 0.8

[huonw]

Hi, thanks for the report.

This looks like you have an version of Rust where debug! (etc) used the old fmt! string formatting syntax extension (I think 0.8 still used that), so you need to write debug!("%?", "aa");.

There is possibly a debug2 macro which uses the new format! syntax, i.e. debug2!("{:?}", "aa"); may work (NB. I'm not 100% sure when this was introduced).

Just to be sure, are you using 0.8?

[inspurhua]

i find the problem at rust 0.8, debug!("%?", "aa") is right.thank you

[inspurhua]

debug!("%?", "aa");