tests/ui/borrowck/borrowck-move-out-from-array-use-no-overlap-match.rs

   1 // Due to #53114, which causes a "read" of the `_` patterns,
   2 // the borrow-checker refuses this code, while it should probably be allowed.
   3 // Once the bug is fixed, the test, which is derived from a
   4 // passing test for `let` statements, should become check-pass.
   5
   6 fn array() -> [(String, String); 3] {
   7     Default::default()
   8 }
   9
  10 // Const Index + Const Index
  11
  12 fn move_out_from_begin_and_one_from_end() {
  13     let a = array();
  14     match a {
  15         [_, _, _x] => {}
  16     }
  17     match a {
  18         //~^ ERROR use of partially moved value
  19         [.., ref _y, _] => {}
  20     }
  21 }
  22
  23 fn move_out_from_begin_field_and_end_field() {
  24     let a = array();
  25     match a {
  26         [_, _, (_x, _)] => {}
  27     }
  28     match a {
  29         //~^ ERROR use of partially moved value
  30         [.., (_, ref _y)] => {}
  31     }
  32 }
  33
  34 // Const Index + Slice
  35
  36 fn move_out_by_const_index_and_subslice() {
  37     let a = array();
  38     match a {
  39         [_x, _, _] => {}
  40     }
  41     match a {
  42         //~^ ERROR use of partially moved value
  43         [_, ref _y @ ..] => {}
  44     }
  45 }
  46
  47 fn move_out_by_const_index_end_and_subslice() {
  48     let a = array();
  49     match a {
  50         [.., _x] => {}
  51     }
  52     match a {
  53         //~^ ERROR use of partially moved value
  54         [ref _y @ .., _] => {}
  55     }
  56 }
  57
  58 fn move_out_by_const_index_field_and_subslice() {
  59     let a = array();
  60     match a {
  61         [(_x, _), _, _] => {}
  62     }
  63     match a {
  64         //~^ ERROR use of partially moved value
  65         [_, ref _y @ ..] => {}
  66     }
  67 }
  68
  69 fn move_out_by_const_index_end_field_and_subslice() {
  70     let a = array();
  71     match a {
  72         [.., (_x, _)] => {}
  73     }
  74     match a {
  75         //~^ ERROR use of partially moved value
  76         [ref _y @ .., _] => {}
  77     }
  78 }
  79
  80 fn move_out_by_const_subslice_and_index_field() {
  81     let a = array();
  82     match a {
  83         [_, _y @ ..] => {}
  84     }
  85     match a {
  86         //~^ ERROR use of partially moved value
  87         [(ref _x, _), _, _] => {}
  88     }
  89 }
  90
  91 fn move_out_by_const_subslice_and_end_index_field() {
  92     let a = array();
  93     match a {
  94         [_y @ .., _] => {}
  95     }
  96     match a {
  97         //~^ ERROR use of partially moved value
  98         [.., (ref _x, _)] => {}
  99     }
 100 }
 101
 102 // Slice + Slice
 103
 104 fn move_out_by_subslice_and_subslice() {
 105     let a = array();
 106     match a {
 107         [x @ .., _, _] => {}
 108     }
 109     match a {
 110         //~^ ERROR use of partially moved value
 111         [_, ref _y @ ..] => {}
 112     }
 113 }
 114
 115 fn main() {}