src/test/mir-opt/generator-storage-dead-unwind.rs

   1 // ignore-wasm32-bare compiled with panic=abort by default
   2
   3 // Test that we generate StorageDead on unwind paths for generators.
   4 //
   5 // Basic block and local names can safely change, but the StorageDead statements
   6 // should not go away.
   7
   8 #![feature(generators, generator_trait)]
   9
  10 struct Foo(i32);
  11
  12 impl Drop for Foo {
  13     fn drop(&mut self) {}
  14 }
  15
  16 struct Bar(i32);
  17
  18 fn take<T>(_x: T) {}
  19
  20 // EMIT_MIR rustc.main-{{closure}}.StateTransform.before.mir
  21 fn main() {
  22     let _gen = || {
  23         let a = Foo(5);
  24         let b = Bar(6);
  25         yield;
  26         take(a);
  27         take(b);
  28     };
  29 }