src/test/ui/const_evaluatable/function-call.rs

   1 // check-pass
   2
   3 const fn foo<T>() -> usize {
   4     // We might instead branch on `std::mem::size_of::<*mut T>() < 8` here,
   5     // which would cause this function to fail on 32 bit systems.
   6     if false {
   7         std::mem::size_of::<T>()
   8     } else {
   9         8
  10     }
  11 }
  12
  13 fn test<T>() {
  14     let _ = [0; foo::<T>()];
  15     //~^ WARN cannot use constants which depend on generic parameters in types
  16     //~| WARN this was previously accepted by the compiler but is being phased out
  17 }
  18
  19 fn main() {}