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// check-pass #![feature(decl_macro)] macro m($T:ident, $f:ident) { pub trait $T { fn f(&self) -> u32 { 0 } fn $f(&self) -> i32 { 0 } } impl $T for () {} let _: u32 = ().f(); let _: i32 = ().$f(); } fn main() { m!(T, f); let _: i32 = ().f(); }