tests/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: -C panic=abort
   5 // no-prefer-dynamic
   6
   7 #![feature(generators, generator_trait)]
   8
   9 struct HasDrop;
  10
  11 impl Drop for HasDrop {
  12     fn drop(&mut self) {}
  13 }
  14
  15 fn callee() {}
  16
  17 // EMIT_MIR generator_tiny.main-{closure#0}.generator_resume.0.mir
  18 fn main() {
  19     let _gen = |_x: u8| {
  20         let _d = HasDrop;
  21         loop {
  22             yield;
  23             callee();
  24         }
  25     };
  26 }