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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:10:1
|
LL | static FOO: &&mut u32 = &&mut 42;
| ^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
note: the lint level is defined here
--> $DIR/mutable_references.rs:5:9
|
LL | #![deny(const_eval_mutable_ptr_in_final_value)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:14:1
|
LL | static BAR: &mut () = &mut ();
| ^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:20:1
|
LL | static BOO: &mut Foo<()> = &mut Foo(());
| ^^^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:28:1
|
LL | static MEH: Meh = Meh { x: &UnsafeCell::new(42) };
| ^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:32:1
|
LL | static OH_YES: &mut i32 = &mut 42;
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
error[E0080]: it is undefined behavior to use this value
--> $DIR/mutable_references.rs:32:1
|
LL | static OH_YES: &mut i32 = &mut 42;
| ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered mutable reference or box pointing to read-only memory
|
= note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
= note: the raw bytes of the constant (size: $SIZE, align: $ALIGN) {
HEX_DUMP
}
error[E0594]: cannot assign to `*OH_YES`, as `OH_YES` is an immutable static item
--> $DIR/mutable_references.rs:41:5
|
LL | *OH_YES = 99;
| ^^^^^^^^^^^^ cannot assign
warning: skipping const checks
|
help: skipping check that does not even have a feature gate
--> $DIR/mutable_references.rs:10:26
|
LL | static FOO: &&mut u32 = &&mut 42;
| ^^^^^^^
help: skipping check that does not even have a feature gate
--> $DIR/mutable_references.rs:14:23
|
LL | static BAR: &mut () = &mut ();
| ^^^^^^^
help: skipping check that does not even have a feature gate
--> $DIR/mutable_references.rs:20:28
|
LL | static BOO: &mut Foo<()> = &mut Foo(());
| ^^^^^^^^^^^^
help: skipping check that does not even have a feature gate
--> $DIR/mutable_references.rs:28:28
|
LL | static MEH: Meh = Meh { x: &UnsafeCell::new(42) };
| ^^^^^^^^^^^^^^^^^^^^
help: skipping check that does not even have a feature gate
--> $DIR/mutable_references.rs:32:27
|
LL | static OH_YES: &mut i32 = &mut 42;
| ^^^^^^^
error: aborting due to 7 previous errors; 1 warning emitted
Some errors have detailed explanations: E0080, E0594.
For more information about an error, try `rustc --explain E0080`.
Future incompatibility report: Future breakage diagnostic:
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:10:1
|
LL | static FOO: &&mut u32 = &&mut 42;
| ^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
note: the lint level is defined here
--> $DIR/mutable_references.rs:5:9
|
LL | #![deny(const_eval_mutable_ptr_in_final_value)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Future breakage diagnostic:
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:14:1
|
LL | static BAR: &mut () = &mut ();
| ^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
note: the lint level is defined here
--> $DIR/mutable_references.rs:5:9
|
LL | #![deny(const_eval_mutable_ptr_in_final_value)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Future breakage diagnostic:
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:20:1
|
LL | static BOO: &mut Foo<()> = &mut Foo(());
| ^^^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
note: the lint level is defined here
--> $DIR/mutable_references.rs:5:9
|
LL | #![deny(const_eval_mutable_ptr_in_final_value)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Future breakage diagnostic:
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:28:1
|
LL | static MEH: Meh = Meh { x: &UnsafeCell::new(42) };
| ^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
note: the lint level is defined here
--> $DIR/mutable_references.rs:5:9
|
LL | #![deny(const_eval_mutable_ptr_in_final_value)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Future breakage diagnostic:
error: encountered mutable pointer in final value of static
--> $DIR/mutable_references.rs:32:1
|
LL | static OH_YES: &mut i32 = &mut 42;
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #122153 <https://github.com/rust-lang/rust/issues/122153>
note: the lint level is defined here
--> $DIR/mutable_references.rs:5:9
|
LL | #![deny(const_eval_mutable_ptr_in_final_value)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|