// Test that the trace_macros feature gate is on. fn main() { trace_macros!(); //~ ERROR `trace_macros` is not stable //~| ERROR trace_macros! accepts only `true` or `false` trace_macros!(true); //~ ERROR `trace_macros` is not stable trace_macros!(false); //~ ERROR `trace_macros` is not stable macro_rules! expando { ($x: ident) => { trace_macros!($x) } //~ ERROR `trace_macros` is not stable } expando!(true); }