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#![feature(trace_macros)]
fn main() {
trace_macros!(); //~ ERROR trace_macros! accepts only `true` or `false`
trace_macros!(1); //~ ERROR trace_macros! accepts only `true` or `false`
trace_macros!(ident); //~ ERROR trace_macros! accepts only `true` or `false`
trace_macros!(for); //~ ERROR trace_macros! accepts only `true` or `false`
trace_macros!(true,); //~ ERROR trace_macros! accepts only `true` or `false`
trace_macros!(false 1); //~ ERROR trace_macros! accepts only `true` or `false`
// should be fine:
macro_rules! expando {
($x: ident) => { trace_macros!($x) }
}
expando!(true);
}
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