src/test/compile-fail/issue-23302.rs

   1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // Check that an enum with recursion in the discriminant throws
  12 // the appropriate error (rather than, say, blowing the stack).
  13 enum X {
  14     A = X::A as isize, //~ ERROR E0265
  15                        //~^ NOTE recursion not allowed in constant
  16 }
  17
  18 // Since `Y::B` here defaults to `Y::A+1`, this is also a
  19 // recursive definition.
  20 enum Y {
  21     A = Y::B as isize, //~ ERROR E0265
  22                        //~^ NOTE recursion not allowed in constant
  23     B,
  24 }
  25
  26 const A: i32 = B; //~ ERROR E0265
  27                   //~^ NOTE recursion not allowed in constant
  28
  29 const B: i32 = A; //~ ERROR E0265
  30                   //~^ NOTE recursion not allowed in constant
  31
  32 fn main() { }