1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:9:5
|
LL | let Foo(a) = Foo(0);
| - first assignment to `a`
LL | a = 42;
| ^^^^^^ cannot assign twice to immutable variable
|
help: consider making this binding mutable
|
LL | let Foo(mut a) = Foo(0);
| +++
help: to modify the original value, take a borrow instead
|
LL | let Foo(ref mut a) = Foo(0);
| +++++++
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:15:5
|
LL | let Foo(ref a) = Foo(0);
| ----- first assignment to `a`
LL | a = &42;
| ^^^^^^^ cannot assign twice to immutable variable
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:21:5
|
LL | let Foo(ref mut a) = Foo(0);
| --------- first assignment to `a`
LL | a = &mut 42;
| ^^^^^^^^^^^ cannot assign twice to immutable variable
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:27:5
|
LL | let Foo(a) = &Foo(0);
| - first assignment to `a`
LL | a = &42;
| ^^^^^^^ cannot assign twice to immutable variable
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:33:5
|
LL | let Foo(ref a) = &Foo(0);
| ----- first assignment to `a`
LL | a = &42;
| ^^^^^^^ cannot assign twice to immutable variable
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:39:5
|
LL | let Foo(a) = &mut Foo(0);
| - first assignment to `a`
LL | a = &mut 42;
| ^^^^^^^^^^^ cannot assign twice to immutable variable
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:45:5
|
LL | let Foo(ref a) = &mut Foo(0);
| ----- first assignment to `a`
LL | a = &42;
| ^^^^^^^ cannot assign twice to immutable variable
error[E0384]: cannot assign twice to immutable variable `a`
--> $DIR/mut-ref-mut-2021.rs:51:5
|
LL | let Foo(ref mut a) = &mut Foo(0);
| --------- first assignment to `a`
LL | a = &mut 42;
| ^^^^^^^^^^^ cannot assign twice to immutable variable
error: aborting due to 8 previous errors
For more information about this error, try `rustc --explain E0384`.
|
