src/test/mir-opt/remove_zsts_dont_touch_unions.rs

   1 // compile-flags: -Zmir-opt-level=3
   2
   3 // Ensure RemoveZsts doesn't remove ZST assignments to union fields,
   4 // which causes problems in Miri.
   5
   6 union Foo {
   7     x: (),
   8     y: u64,
   9 }
  10
  11 // EMIT_MIR remove_zsts_dont_touch_unions.get_union.RemoveZsts.after.mir
  12 fn get_union() -> Foo {
  13     Foo { x: () }
  14 }
  15
  16
  17 fn main() {
  18     get_union();
  19 }