rust/src/test/ui/lint/invalid_value.stderr

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error: the type `&T` does not permit zero-initialization
--> $DIR/invalid_value.rs:54:32
|
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LL | let _val: &'static T = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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= note: references must be non-null
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note: the lint level is defined here
--> $DIR/invalid_value.rs:6:9
|
LL | #![deny(invalid_value)]
| ^^^^^^^^^^^^^
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error: the type `&T` does not permit being left uninitialized
--> $DIR/invalid_value.rs:55:32
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|
LL | let _val: &'static T = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: references must be non-null
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error: the type `Wrap<&T>` does not permit zero-initialization
--> $DIR/invalid_value.rs:57:38
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|
LL | let _val: Wrap<&'static T> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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note: references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:17:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
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error: the type `Wrap<&T>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:58:38
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|
LL | let _val: Wrap<&'static T> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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note: references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:17:18
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|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
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error: the type `!` does not permit zero-initialization
--> $DIR/invalid_value.rs:65:23
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|
LL | let _val: ! = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: the `!` type has no valid value
error: the type `!` does not permit being left uninitialized
--> $DIR/invalid_value.rs:66:23
|
LL | let _val: ! = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: the `!` type has no valid value
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error: the type `(i32, !)` does not permit zero-initialization
--> $DIR/invalid_value.rs:68:30
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|
LL | let _val: (i32, !) = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: the `!` type has no valid value
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error: the type `(i32, !)` does not permit being left uninitialized
--> $DIR/invalid_value.rs:69:30
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|
LL | let _val: (i32, !) = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
= note: integers must not be uninitialized
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error: the type `Void` does not permit zero-initialization
--> $DIR/invalid_value.rs:71:26
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|
LL | let _val: Void = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:12:1
|
LL | enum Void {}
| ^^^^^^^^^
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error: the type `Void` does not permit being left uninitialized
--> $DIR/invalid_value.rs:72:26
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|
LL | let _val: Void = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:12:1
|
LL | enum Void {}
| ^^^^^^^^^
error: the type `&i32` does not permit zero-initialization
--> $DIR/invalid_value.rs:74:34
|
LL | let _val: &'static i32 = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: references must be non-null
error: the type `&i32` does not permit being left uninitialized
--> $DIR/invalid_value.rs:75:34
|
LL | let _val: &'static i32 = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: references must be non-null
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error: the type `Ref` does not permit zero-initialization
--> $DIR/invalid_value.rs:77:25
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|
LL | let _val: Ref = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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note: references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:14:12
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|
LL | struct Ref(&'static i32);
| ^^^^^^^^^^^^
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error: the type `Ref` does not permit being left uninitialized
--> $DIR/invalid_value.rs:78:25
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|
LL | let _val: Ref = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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note: references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:14:12
|
LL | struct Ref(&'static i32);
| ^^^^^^^^^^^^
error: the type `fn()` does not permit zero-initialization
--> $DIR/invalid_value.rs:80:26
|
LL | let _val: fn() = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: function pointers must be non-null
error: the type `fn()` does not permit being left uninitialized
--> $DIR/invalid_value.rs:81:26
|
LL | let _val: fn() = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: function pointers must be non-null
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error: the type `Wrap<fn()>` does not permit zero-initialization
--> $DIR/invalid_value.rs:83:32
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|
LL | let _val: Wrap<fn()> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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note: function pointers must be non-null (in this struct field)
--> $DIR/invalid_value.rs:17:18
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|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
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error: the type `Wrap<fn()>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:84:32
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|
LL | let _val: Wrap<fn()> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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note: function pointers must be non-null (in this struct field)
--> $DIR/invalid_value.rs:17:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
error: the type `WrapEnum<fn()>` does not permit zero-initialization
--> $DIR/invalid_value.rs:86:36
|
LL | let _val: WrapEnum<fn()> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: function pointers must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:18:28
|
LL | enum WrapEnum<T> { Wrapped(T) }
| ^
error: the type `WrapEnum<fn()>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:87:36
|
LL | let _val: WrapEnum<fn()> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: function pointers must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:18:28
|
LL | enum WrapEnum<T> { Wrapped(T) }
| ^
error: the type `Wrap<(RefPair, i32)>` does not permit zero-initialization
--> $DIR/invalid_value.rs:89:42
|
LL | let _val: Wrap<(RefPair, i32)> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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note: references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:15:16
|
LL | struct RefPair((&'static i32, i32));
| ^^^^^^^^^^^^^^^^^^^
error: the type `Wrap<(RefPair, i32)>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:90:42
|
LL | let _val: Wrap<(RefPair, i32)> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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note: references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:15:16
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|
LL | struct RefPair((&'static i32, i32));
| ^^^^^^^^^^^^^^^^^^^
error: the type `NonNull<i32>` does not permit zero-initialization
--> $DIR/invalid_value.rs:92:34
|
LL | let _val: NonNull<i32> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::ptr::NonNull<i32>` must be non-null
error: the type `NonNull<i32>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:93:34
|
LL | let _val: NonNull<i32> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::ptr::NonNull<i32>` must be non-null
error: the type `(NonZeroU32, i32)` does not permit zero-initialization
--> $DIR/invalid_value.rs:95:39
|
LL | let _val: (NonZeroU32, i32) = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::num::NonZeroU32` must be non-null
error: the type `(NonZeroU32, i32)` does not permit being left uninitialized
--> $DIR/invalid_value.rs:96:39
|
LL | let _val: (NonZeroU32, i32) = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::num::NonZeroU32` must be non-null
error: the type `*const dyn Send` does not permit zero-initialization
--> $DIR/invalid_value.rs:98:37
|
LL | let _val: *const dyn Send = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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= note: the vtable of a wide raw pointer must be non-null
error: the type `*const dyn Send` does not permit being left uninitialized
--> $DIR/invalid_value.rs:99:37
|
LL | let _val: *const dyn Send = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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= note: the vtable of a wide raw pointer must be non-null
error: the type `[fn(); 2]` does not permit zero-initialization
--> $DIR/invalid_value.rs:101:31
|
LL | let _val: [fn(); 2] = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: function pointers must be non-null
error: the type `[fn(); 2]` does not permit being left uninitialized
--> $DIR/invalid_value.rs:102:31
|
LL | let _val: [fn(); 2] = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: function pointers must be non-null
error: the type `TwoUninhabited` does not permit zero-initialization
--> $DIR/invalid_value.rs:104:36
|
LL | let _val: TwoUninhabited = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:42:1
|
LL | enum TwoUninhabited {
| ^^^^^^^^^^^^^^^^^^^
error: the type `TwoUninhabited` does not permit being left uninitialized
--> $DIR/invalid_value.rs:105:36
|
LL | let _val: TwoUninhabited = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:42:1
|
LL | enum TwoUninhabited {
| ^^^^^^^^^^^^^^^^^^^
error: the type `OneFruitNonZero` does not permit zero-initialization
--> $DIR/invalid_value.rs:107:37
|
LL | let _val: OneFruitNonZero = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: `std::num::NonZeroU32` must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:39:12
|
LL | Banana(NonZeroU32),
| ^^^^^^^^^^
error: the type `OneFruitNonZero` does not permit being left uninitialized
--> $DIR/invalid_value.rs:108:37
|
LL | let _val: OneFruitNonZero = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: `std::num::NonZeroU32` must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:39:12
|
LL | Banana(NonZeroU32),
| ^^^^^^^^^^
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error: the type `bool` does not permit being left uninitialized
--> $DIR/invalid_value.rs:112:26
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|
LL | let _val: bool = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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= note: booleans must be either `true` or `false`
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error: the type `Wrap<char>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:115:32
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|
LL | let _val: Wrap<char> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
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|
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note: characters must be a valid Unicode codepoint (in this struct field)
--> $DIR/invalid_value.rs:17:18
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|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
error: the type `NonBig` does not permit being left uninitialized
--> $DIR/invalid_value.rs:118:28
|
LL | let _val: NonBig = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
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| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
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= note: `NonBig` must be initialized inside its custom valid range
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error: the type `Fruit` does not permit being left uninitialized
--> $DIR/invalid_value.rs:121:27
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|
LL | let _val: Fruit = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: enums with multiple inhabited variants have to be initialized to a variant
--> $DIR/invalid_value.rs:26:1
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|
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LL | enum Fruit {
| ^^^^^^^^^^
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error: the type `[bool; 2]` does not permit being left uninitialized
--> $DIR/invalid_value.rs:124:31
|
LL | let _val: [bool; 2] = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: booleans must be either `true` or `false`
error: the type `i32` does not permit being left uninitialized
--> $DIR/invalid_value.rs:127:25
|
LL | let _val: i32 = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: integers must not be uninitialized
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error: the type `f32` does not permit being left uninitialized
--> $DIR/invalid_value.rs:130:25
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|
LL | let _val: f32 = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: floats must not be uninitialized
error: the type `*const ()` does not permit being left uninitialized
--> $DIR/invalid_value.rs:133:31
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|
LL | let _val: *const () = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: raw pointers must not be uninitialized
error: the type `*const [()]` does not permit being left uninitialized
--> $DIR/invalid_value.rs:136:33
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|
LL | let _val: *const [()] = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: raw pointers must not be uninitialized
error: the type `WrapAroundRange` does not permit being left uninitialized
--> $DIR/invalid_value.rs:139:37
|
LL | let _val: WrapAroundRange = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `WrapAroundRange` must be initialized inside its custom valid range
error: the type `Result<i32, i32>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:144:38
|
LL | let _val: Result<i32, i32> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
note: enums with multiple inhabited variants have to be initialized to a variant
--> $SRC_DIR/core/src/result.rs:LL:COL
|
LL | pub enum Result<T, E> {
| ^^^^^^^^^^^^^^^^^^^^^
error: the type `&i32` does not permit zero-initialization
--> $DIR/invalid_value.rs:152:34
|
LL | let _val: &'static i32 = mem::transmute(0usize);
| ^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
2019-11-07 03:22:50 -06:00
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
2020-01-10 08:13:05 -06:00
= note: references must be non-null
error: the type `&[i32]` does not permit zero-initialization
--> $DIR/invalid_value.rs:153:36
|
LL | let _val: &'static [i32] = mem::transmute((0usize, 0usize));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
2019-11-07 03:22:50 -06:00
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
2020-01-10 08:13:05 -06:00
= note: references must be non-null
error: the type `NonZeroU32` does not permit zero-initialization
--> $DIR/invalid_value.rs:154:32
|
LL | let _val: NonZeroU32 = mem::transmute(0);
| ^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
2019-11-07 03:22:50 -06:00
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::num::NonZeroU32` must be non-null
error: the type `NonNull<i32>` does not permit zero-initialization
--> $DIR/invalid_value.rs:157:34
|
LL | let _val: NonNull<i32> = MaybeUninit::zeroed().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
2019-11-07 03:22:50 -06:00
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::ptr::NonNull<i32>` must be non-null
error: the type `NonNull<i32>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:158:34
|
LL | let _val: NonNull<i32> = MaybeUninit::uninit().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
2019-11-07 03:22:50 -06:00
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::ptr::NonNull<i32>` must be non-null
error: the type `bool` does not permit being left uninitialized
--> $DIR/invalid_value.rs:159:26
|
LL | let _val: bool = MaybeUninit::uninit().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
2019-11-07 03:22:50 -06:00
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
2020-01-10 08:13:05 -06:00
= note: booleans must be either `true` or `false`
error: aborting due to 51 previous errors