use std::fmt::Debug; use std::default::Default; // Test that a blank impl for all T conflicts with an impl for some // specific T. trait MyTrait { fn get(&self) -> usize; } impl MyTrait for (T,T) { fn get(&self) -> usize { 0 } } impl MyTrait for (A,B) { //~^ ERROR E0119 fn get(&self) -> usize { self.dummy } //~^ ERROR: no field `dummy` } fn main() { }