src/test/mir-opt/generator-tiny.rs

   1 //! Tests that generators that cannot return or unwind don't have unnecessary
   2 //! panic branches.
   3
   4 // compile-flags: -Zno-landing-pads
   5
   6 #![feature(generators, generator_trait)]
   7
   8 struct HasDrop;
   9
  10 impl Drop for HasDrop {
  11     fn drop(&mut self) {}
  12 }
  13
  14 fn callee() {}
  15
  16 // EMIT_MIR rustc.main-{{closure}}.generator_resume.0.mir
  17 fn main() {
  18     let _gen = |_x: u8| {
  19         let _d = HasDrop;
  20         loop {
  21             yield;
  22             callee();
  23         }
  24     };
  25 }