src/test/mir-opt/nll/region-subtyping-basic.rs

   1 // Basic test for liveness constraints: the region (`R1`) that appears
   2 // in the type of `p` includes the points after `&v[0]` up to (but not
   3 // including) the call to `use_x`. The `else` branch is not included.
   4
   5 // compile-flags:-Zverbose
   6 //               ^^^^^^^^^ force compiler to dump more region information
   7
   8 #![allow(warnings)]
   9
  10 fn use_x(_: usize) -> bool {
  11     true
  12 }
  13
  14 // EMIT_MIR_FOR_EACH_BIT_WIDTH
  15 // EMIT_MIR region_subtyping_basic.main.nll.0.mir
  16 fn main() {
  17     let mut v = [1, 2, 3];
  18     let p = &v[0];
  19     let q = p;
  20     if true {
  21         use_x(*q);
  22     } else {
  23         use_x(22);
  24     }
  25 }