rust/tests/ui/lint/invalid_value.stderr

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error: the type `&T` does not permit zero-initialization
--> $DIR/invalid_value.rs:53:32
|
LL | let _val: &'static T = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: references must be non-null
note: the lint level is defined here
--> $DIR/invalid_value.rs:4:9
|
LL | #![deny(invalid_value)]
| ^^^^^^^^^^^^^
error: the type `&T` does not permit being left uninitialized
--> $DIR/invalid_value.rs:54:32
|
LL | let _val: &'static T = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: references must be non-null
error: the type `Wrap<&T>` does not permit zero-initialization
--> $DIR/invalid_value.rs:56:38
|
LL | let _val: Wrap<&'static T> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `Wrap<&T>` must be non-null
note: because references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:16:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
error: the type `Wrap<&T>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:57:38
|
LL | let _val: Wrap<&'static T> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `Wrap<&T>` must be non-null
note: because references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:16:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
error: the type `!` does not permit zero-initialization
--> $DIR/invalid_value.rs:64:23
|
LL | let _val: ! = mem::zeroed();
| ^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: the `!` type has no valid value
error: the type `!` does not permit being left uninitialized
--> $DIR/invalid_value.rs:65:23
|
LL | let _val: ! = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: the `!` type has no valid value
error: the type `(i32, !)` does not permit zero-initialization
--> $DIR/invalid_value.rs:67:30
|
LL | let _val: (i32, !) = mem::zeroed();
| ^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: the `!` type has no valid value
error: the type `(i32, !)` does not permit being left uninitialized
--> $DIR/invalid_value.rs:68:30
|
LL | let _val: (i32, !) = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: integers must be initialized
error: the type `Void` does not permit zero-initialization
--> $DIR/invalid_value.rs:70:26
|
LL | let _val: Void = mem::zeroed();
| ^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:11:1
|
LL | enum Void {}
| ^^^^^^^^^
error: the type `Void` does not permit being left uninitialized
--> $DIR/invalid_value.rs:71:26
|
LL | let _val: Void = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:11:1
|
LL | enum Void {}
| ^^^^^^^^^
error: the type `&i32` does not permit zero-initialization
--> $DIR/invalid_value.rs:73:34
|
LL | let _val: &'static 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: references must be non-null
error: the type `&i32` does not permit being left uninitialized
--> $DIR/invalid_value.rs:74:34
|
LL | let _val: &'static 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: references must be non-null
error: the type `Ref` does not permit zero-initialization
--> $DIR/invalid_value.rs:76:25
|
LL | let _val: Ref = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `Ref` must be non-null
note: because references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:13:12
|
LL | struct Ref(&'static i32);
| ^^^^^^^^^^^^
error: the type `Ref` does not permit being left uninitialized
--> $DIR/invalid_value.rs:77:25
|
LL | let _val: Ref = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `Ref` must be non-null
note: because references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:13:12
|
LL | struct Ref(&'static i32);
| ^^^^^^^^^^^^
error: the type `fn()` does not permit zero-initialization
--> $DIR/invalid_value.rs:79:26
|
LL | let _val: fn() = 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()` does not permit being left uninitialized
--> $DIR/invalid_value.rs:80:26
|
LL | let _val: fn() = 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 `Wrap<fn()>` does not permit zero-initialization
--> $DIR/invalid_value.rs:82:32
|
LL | let _val: Wrap<fn()> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `Wrap<fn()>` must be non-null
note: because function pointers must be non-null (in this struct field)
--> $DIR/invalid_value.rs:16:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
error: the type `Wrap<fn()>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:83:32
|
LL | let _val: Wrap<fn()> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `Wrap<fn()>` must be non-null
note: because function pointers must be non-null (in this struct field)
--> $DIR/invalid_value.rs:16:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
error: the type `WrapEnum<fn()>` does not permit zero-initialization
--> $DIR/invalid_value.rs:85:36
|
LL | let _val: WrapEnum<fn()> = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `WrapEnum<fn()>` must be non-null
note: because function pointers must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:17:28
|
LL | enum WrapEnum<T> { Wrapped(T) }
| ^
error: the type `WrapEnum<fn()>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:86:36
|
LL | let _val: WrapEnum<fn()> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `WrapEnum<fn()>` must be non-null
note: because function pointers must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:17:28
|
LL | enum WrapEnum<T> { Wrapped(T) }
| ^
error: the type `Wrap<(RefPair, i32)>` does not permit zero-initialization
--> $DIR/invalid_value.rs:88:42
|
LL | let _val: Wrap<(RefPair, 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: `RefPair` must be non-null (in this struct field)
--> $DIR/invalid_value.rs:16:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
note: because references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:14:16
|
LL | struct RefPair((&'static i32, i32));
| ^^^^^^^^^^^^^^^^^^^
error: the type `Wrap<(RefPair, i32)>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:89:42
|
LL | let _val: Wrap<(RefPair, 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: `RefPair` must be non-null (in this struct field)
--> $DIR/invalid_value.rs:16:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
note: because references must be non-null (in this struct field)
--> $DIR/invalid_value.rs:14:16
|
LL | struct RefPair((&'static i32, i32));
| ^^^^^^^^^^^^^^^^^^^
error: the type `NonNull<i32>` does not permit zero-initialization
--> $DIR/invalid_value.rs:91:34
|
LL | let _val: NonNull<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::ptr::NonNull<i32>` must be non-null
error: the type `NonNull<i32>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:92:34
|
LL | let _val: NonNull<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::ptr::NonNull<i32>` must be non-null
= note: raw pointers must be initialized
error: the type `(NonZero<u32>, i32)` does not permit zero-initialization
--> $DIR/invalid_value.rs:94:41
|
LL | let _val: (NonZero<u32>, i32) = mem::zeroed();
| ^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: `std::num::NonZero<u32>` must be non-null
= note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null
error: the type `(NonZero<u32>, i32)` does not permit being left uninitialized
--> $DIR/invalid_value.rs:95:41
|
LL | let _val: (NonZero<u32>, i32) = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: `std::num::NonZero<u32>` must be non-null
= note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null
= note: integers must be initialized
error: the type `*const dyn Send` does not permit zero-initialization
--> $DIR/invalid_value.rs:97:37
|
LL | let _val: *const dyn Send = mem::zeroed();
| ^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= 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:98:37
|
LL | let _val: *const dyn Send = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= 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:100:31
|
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:101:31
|
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:103:36
|
LL | let _val: TwoUninhabited = mem::zeroed();
| ^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:41:1
|
LL | enum TwoUninhabited {
| ^^^^^^^^^^^^^^^^^^^
error: the type `TwoUninhabited` does not permit being left uninitialized
--> $DIR/invalid_value.rs:104:36
|
LL | let _val: TwoUninhabited = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
note: enums with no inhabited variants have no valid value
--> $DIR/invalid_value.rs:41:1
|
LL | enum TwoUninhabited {
| ^^^^^^^^^^^^^^^^^^^
error: the type `OneFruitNonZero` does not permit zero-initialization
--> $DIR/invalid_value.rs:106:37
|
LL | let _val: OneFruitNonZero = mem::zeroed();
| ^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: `OneFruitNonZero` must be non-null
note: because `std::num::NonZero<u32>` must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:38:12
|
LL | Banana(NonZero<u32>),
| ^^^^^^^^^^^^
= note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null
error: the type `OneFruitNonZero` does not permit being left uninitialized
--> $DIR/invalid_value.rs:107:37
|
LL | let _val: OneFruitNonZero = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: `OneFruitNonZero` must be non-null
note: because `std::num::NonZero<u32>` must be non-null (in this field of the only potentially inhabited enum variant)
--> $DIR/invalid_value.rs:38:12
|
LL | Banana(NonZero<u32>),
| ^^^^^^^^^^^^
= note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null
= note: integers must be initialized
error: the type `bool` does not permit being left uninitialized
--> $DIR/invalid_value.rs:111:26
|
LL | let _val: bool = 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 `Wrap<char>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:114:32
|
LL | let _val: Wrap<char> = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `Wrap<char>` must be initialized inside its custom valid range
note: characters must be a valid Unicode codepoint (in this struct field)
--> $DIR/invalid_value.rs:16:18
|
LL | struct Wrap<T> { wrapped: T }
| ^^^^^^^^^^
error: the type `NonBig` does not permit being left uninitialized
--> $DIR/invalid_value.rs:117:28
|
LL | let _val: NonBig = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `NonBig` must be initialized inside its custom valid range
note: integers must be initialized (in this struct field)
--> $DIR/invalid_value.rs:22:26
|
LL | pub(crate) struct NonBig(u64);
| ^^^
error: the type `Fruit` does not permit being left uninitialized
--> $DIR/invalid_value.rs:120:27
|
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:25:1
|
LL | enum Fruit {
| ^^^^^^^^^^
error: the type `[bool; 2]` does not permit being left uninitialized
--> $DIR/invalid_value.rs:123:31
|
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:126:25
|
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 be initialized
error: the type `f32` does not permit being left uninitialized
--> $DIR/invalid_value.rs:129:25
|
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 be initialized
error: the type `*const ()` does not permit being left uninitialized
--> $DIR/invalid_value.rs:132:31
|
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 be initialized
error: the type `*const [()]` does not permit being left uninitialized
--> $DIR/invalid_value.rs:135:33
|
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 be initialized
error: the type `WrapAroundRange` does not permit being left uninitialized
--> $DIR/invalid_value.rs:138:37
|
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
note: integers must be initialized (in this struct field)
--> $DIR/invalid_value.rs:48:35
|
LL | pub(crate) struct WrapAroundRange(u8);
| ^^
error: the type `Result<i32, i32>` does not permit being left uninitialized
--> $DIR/invalid_value.rs:143:38
|
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
error: the type `&i32` does not permit zero-initialization
--> $DIR/invalid_value.rs:151:34
|
LL | let _val: &'static i32 = mem::transmute(0usize);
| ^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: references must be non-null
error: the type `&[i32]` does not permit zero-initialization
--> $DIR/invalid_value.rs:152:36
|
LL | let _val: &'static [i32] = mem::transmute((0usize, 0usize));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: references must be non-null
error: the type `NonZero<u32>` does not permit zero-initialization
--> $DIR/invalid_value.rs:153:34
|
LL | let _val: NonZero<u32> = mem::transmute(0);
| ^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
|
= note: `std::num::NonZero<u32>` must be non-null
= note: because `core::num::nonzero::private::NonZeroU32Inner` must be non-null
error: the type `NonNull<i32>` does not permit zero-initialization
--> $DIR/invalid_value.rs:156:34
|
LL | let _val: NonNull<i32> = MaybeUninit::zeroed().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| 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:157:34
|
LL | let _val: NonNull<i32> = MaybeUninit::uninit().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: `std::ptr::NonNull<i32>` must be non-null
= note: raw pointers must be initialized
error: the type `bool` does not permit being left uninitialized
--> $DIR/invalid_value.rs:158:26
|
LL | let _val: bool = MaybeUninit::uninit().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| 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: aborting due to 51 previous errors