src/test/ui/consts/transmute-size-mismatch-before-typeck.rs

   1 // normalize-stderr-64bit "64 bits" -> "word size"
   2 // normalize-stderr-32bit "32 bits" -> "word size"
   3 // normalize-stderr-64bit "128 bits" -> "2 * word size"
   4 // normalize-stderr-32bit "64 bits" -> "2 * word size"
   5
   6 fn main() {
   7     match &b""[..] {
   8         ZST => {} //~ ERROR could not evaluate constant pattern
   9                   //~| ERROR could not evaluate constant pattern
  10     }
  11 }
  12
  13 const ZST: &[u8] = unsafe { std::mem::transmute(1usize) };
  14 //~^ ERROR any use of this value will cause an error
  15 //~| ERROR cannot transmute between types of different sizes
  16 //~| WARN this was previously accepted by the compiler but is being phased out
  17
  18 // Once the `any use of this value will cause an error` disappears in this test, make sure to
  19 // remove the `TransmuteSizeDiff` error variant and make its emitter site an assertion again.