src/test/ui/consts/const-eval/panic-assoc-never-type.rs

   1 // build-fail
   2
   3 // Regression test for #66975
   4 #![warn(const_err)]
   5 #![feature(const_panic)]
   6 #![feature(never_type)]
   7
   8 struct PrintName;
   9
  10 impl PrintName {
  11     const VOID: ! = panic!();
  12     //~^ WARN any use of this value will cause an error
  13     //~| WARN this was previously accepted by the compiler but is being phased out
  14 }
  15
  16 fn main() {
  17     let _ = PrintName::VOID;
  18     //~^ ERROR erroneous constant used
  19 }