132 lines
5.2 KiB
Plaintext
132 lines
5.2 KiB
Plaintext
warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:7:8
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LL | if (fn_ptr as *mut ()).is_null() {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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= note: `#[warn(incorrect_fn_null_checks)]` on by default
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warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:9:8
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LL | if (fn_ptr as *const u8).is_null() {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:11:8
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LL | if (fn_ptr as *const ()) == std::ptr::null() {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:13:8
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LL | if (fn_ptr as *mut ()) == std::ptr::null_mut() {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:15:8
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LL | if (fn_ptr as *const ()) == (0 as *const ()) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:17:8
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LL | if <*const _>::is_null(fn_ptr as *const ()) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:19:8
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LL | if (fn_ptr as *mut fn() as *const fn() as *const ()).is_null() {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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warning: function pointers are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:21:8
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LL | if (fn_ptr as fn() as *const ()).is_null() {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:25:8
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LL | if (&mut 8 as *mut i32).is_null() {}
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| ^------^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| expression has type `&mut i32`
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:27:8
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LL | if (&8 as *const i32).is_null() {}
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| ^--^^^^^^^^^^^^^^^^^^^^^^^^^
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| expression has type `&i32`
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:29:8
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LL | if (&8 as *const i32) == std::ptr::null() {}
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| ^--^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| expression has type `&i32`
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:32:8
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LL | if (ref_num as *const i32) == std::ptr::null() {}
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| ^-------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| expression has type `&i32`
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:34:8
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LL | if (b"\0" as *const u8).is_null() {}
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| ^-----^^^^^^^^^^^^^^^^^^^^^^^^
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| expression has type `&[u8; 1]`
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:36:8
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LL | if ("aa" as *const str).is_null() {}
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| ^----^^^^^^^^^^^^^^^^^^^^^^^^^
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| expression has type `&str`
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:38:8
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LL | if (&[1, 2] as *const i32).is_null() {}
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| ^-------^^^^^^^^^^^^^^^^^^^^^^^^^
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| expression has type `&[i32; 2]`
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warning: references are not nullable, so checking them for null will always return false
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--> $DIR/fn_null_check.rs:40:8
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LL | if (&mut [1, 2] as *mut i32) == std::ptr::null_mut() {}
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| ^-----------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| expression has type `&mut [i32; 2]`
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warning: 16 warnings emitted
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