src/test/ui/borrowck/borrowck-union-borrow.stderr

   1 error[E0502]: cannot borrow `u.a` as mutable because it is also borrowed as immutable
   2   --> $DIR/borrowck-union-borrow.rs:23:23
   3    |
   4 LL |             let ra = &u.a;
   5    |                      ---- immutable borrow occurs here
   6 LL |             let rma = &mut u.a;
   7    |                       ^^^^^^^^ mutable borrow occurs here
   8 LL |             drop(ra);
   9    |                  -- immutable borrow later used here
  10
  11 error[E0506]: cannot assign to `u.a` because it is borrowed
  12   --> $DIR/borrowck-union-borrow.rs:28:13
  13    |
  14 LL |             let ra = &u.a;
  15    |                      ---- borrow of `u.a` occurs here
  16 LL |             u.a = 1;
  17    |             ^^^^^^^ assignment to borrowed `u.a` occurs here
  18 LL |             drop(ra);
  19    |                  -- borrow later used here
  20
  21 error[E0502]: cannot borrow `u` (via `u.b`) as mutable because it is also borrowed as immutable (via `u.a`)
  22   --> $DIR/borrowck-union-borrow.rs:44:23
  23    |
  24 LL |             let ra = &u.a;
  25    |                      ---- immutable borrow occurs here (via `u.a`)
  26 LL |             let rmb = &mut u.b;
  27    |                       ^^^^^^^^ mutable borrow of `u.b` -- which overlaps with `u.a` -- occurs here
  28 LL |             drop(ra);
  29    |                  -- immutable borrow later used here
  30    |
  31    = note: `u.b` is a field of the union `U`, so it overlaps the field `u.a`
  32
  33 error[E0506]: cannot assign to `u.b` because it is borrowed
  34   --> $DIR/borrowck-union-borrow.rs:49:13
  35    |
  36 LL |             let ra = &u.a;
  37    |                      ---- borrow of `u.b` occurs here
  38 LL |             u.b = 1;
  39    |             ^^^^^^^ assignment to borrowed `u.b` occurs here
  40 LL |             drop(ra);
  41    |                  -- borrow later used here
  42
  43 error[E0502]: cannot borrow `u.a` as immutable because it is also borrowed as mutable
  44   --> $DIR/borrowck-union-borrow.rs:55:22
  45    |
  46 LL |             let rma = &mut u.a;
  47    |                       -------- mutable borrow occurs here
  48 LL |             let ra = &u.a;
  49    |                      ^^^^ immutable borrow occurs here
  50 LL |             drop(rma);
  51    |                  --- mutable borrow later used here
  52
  53 error[E0503]: cannot use `u.a` because it was mutably borrowed
  54   --> $DIR/borrowck-union-borrow.rs:60:21
  55    |
  56 LL |             let ra = &mut u.a;
  57    |                      -------- borrow of `u.a` occurs here
  58 LL |             let a = u.a;
  59    |                     ^^^ use of borrowed `u.a`
  60 LL |             drop(ra);
  61    |                  -- borrow later used here
  62
  63 error[E0499]: cannot borrow `u.a` as mutable more than once at a time
  64   --> $DIR/borrowck-union-borrow.rs:65:24
  65    |
  66 LL |             let rma = &mut u.a;
  67    |                       -------- first mutable borrow occurs here
  68 LL |             let rma2 = &mut u.a;
  69    |                        ^^^^^^^^ second mutable borrow occurs here
  70 LL |             drop(rma);
  71    |                  --- first borrow later used here
  72
  73 error[E0506]: cannot assign to `u.a` because it is borrowed
  74   --> $DIR/borrowck-union-borrow.rs:70:13
  75    |
  76 LL |             let rma = &mut u.a;
  77    |                       -------- borrow of `u.a` occurs here
  78 LL |             u.a = 1;
  79    |             ^^^^^^^ assignment to borrowed `u.a` occurs here
  80 LL |             drop(rma);
  81    |                  --- borrow later used here
  82
  83 error[E0502]: cannot borrow `u` (via `u.b`) as immutable because it is also borrowed as mutable (via `u.a`)
  84   --> $DIR/borrowck-union-borrow.rs:76:22
  85    |
  86 LL |             let rma = &mut u.a;
  87    |                       -------- mutable borrow occurs here (via `u.a`)
  88 LL |             let rb = &u.b;
  89    |                      ^^^^ immutable borrow of `u.b` -- which overlaps with `u.a` -- occurs here
  90 LL |             drop(rma);
  91    |                  --- mutable borrow later used here
  92    |
  93    = note: `u.b` is a field of the union `U`, so it overlaps the field `u.a`
  94
  95 error[E0503]: cannot use `u.b` because it was mutably borrowed
  96   --> $DIR/borrowck-union-borrow.rs:81:21
  97    |
  98 LL |             let ra = &mut u.a;
  99    |                      -------- borrow of `u.a` occurs here
 100 LL |             let b = u.b;
 101    |                     ^^^ use of borrowed `u.a`
 102 LL |
 103 LL |             drop(ra);
 104    |                  -- borrow later used here
 105
 106 error[E0499]: cannot borrow `u` (via `u.b`) as mutable more than once at a time
 107   --> $DIR/borrowck-union-borrow.rs:87:24
 108    |
 109 LL |             let rma = &mut u.a;
 110    |                       -------- first mutable borrow occurs here (via `u.a`)
 111 LL |             let rmb2 = &mut u.b;
 112    |                        ^^^^^^^^ second mutable borrow occurs here (via `u.b`)
 113 LL |             drop(rma);
 114    |                  --- first borrow later used here
 115    |
 116    = note: `u.b` is a field of the union `U`, so it overlaps the field `u.a`
 117
 118 error[E0506]: cannot assign to `u.b` because it is borrowed
 119   --> $DIR/borrowck-union-borrow.rs:92:13
 120    |
 121 LL |             let rma = &mut u.a;
 122    |                       -------- borrow of `u.b` occurs here
 123 LL |             u.b = 1;
 124    |             ^^^^^^^ assignment to borrowed `u.b` occurs here
 125 LL |             drop(rma);
 126    |                  --- borrow later used here
 127
 128 error: aborting due to 12 previous errors
 129
 130 Some errors have detailed explanations: E0499, E0502, E0503, E0506.
 131 For more information about an error, try `rustc --explain E0499`.