error: the return value of `mem::discriminant` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:26:5 | LL | discriminant(&()); | ^^^^^^^^^^^^^^^^^ | note: the argument to `discriminant` should be a reference to an enum, but it was passed a reference to a `()`, which is not an enum --> $DIR/lint-enum-intrinsics-non-enums.rs:26:18 | LL | discriminant(&()); | ^^^ = note: `#[deny(enum_intrinsics_non_enums)]` on by default error: the return value of `mem::discriminant` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:29:5 | LL | discriminant(&&SomeEnum::B); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: the argument to `discriminant` should be a reference to an enum, but it was passed a reference to a `&SomeEnum`, which is not an enum --> $DIR/lint-enum-intrinsics-non-enums.rs:29:18 | LL | discriminant(&&SomeEnum::B); | ^^^^^^^^^^^^^ error: the return value of `mem::discriminant` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:32:5 | LL | discriminant(&SomeStruct); | ^^^^^^^^^^^^^^^^^^^^^^^^^ | note: the argument to `discriminant` should be a reference to an enum, but it was passed a reference to a `SomeStruct`, which is not an enum --> $DIR/lint-enum-intrinsics-non-enums.rs:32:18 | LL | discriminant(&SomeStruct); | ^^^^^^^^^^^ error: the return value of `mem::discriminant` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:35:5 | LL | discriminant(&123u32); | ^^^^^^^^^^^^^^^^^^^^^ | note: the argument to `discriminant` should be a reference to an enum, but it was passed a reference to a `u32`, which is not an enum --> $DIR/lint-enum-intrinsics-non-enums.rs:35:18 | LL | discriminant(&123u32); | ^^^^^^^ error: the return value of `mem::discriminant` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:38:5 | LL | discriminant(&&123i8); | ^^^^^^^^^^^^^^^^^^^^^ | note: the argument to `discriminant` should be a reference to an enum, but it was passed a reference to a `&i8`, which is not an enum --> $DIR/lint-enum-intrinsics-non-enums.rs:38:18 | LL | discriminant(&&123i8); | ^^^^^^^ error: the return value of `mem::variant_count` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:46:5 | LL | variant_count::<&str>(); | ^^^^^^^^^^^^^^^^^^^^^^^ | = note: the type parameter of `variant_count` should be an enum, but it was instantiated with the type `&str`, which is not an enum error: the return value of `mem::variant_count` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:49:5 | LL | variant_count::<*const u8>(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: the type parameter of `variant_count` should be an enum, but it was instantiated with the type `*const u8`, which is not an enum error: the return value of `mem::variant_count` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:52:5 | LL | variant_count::<()>(); | ^^^^^^^^^^^^^^^^^^^^^ | = note: the type parameter of `variant_count` should be an enum, but it was instantiated with the type `()`, which is not an enum error: the return value of `mem::variant_count` is unspecified when called with a non-enum type --> $DIR/lint-enum-intrinsics-non-enums.rs:55:5 | LL | variant_count::<&SomeEnum>(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: the type parameter of `variant_count` should be an enum, but it was instantiated with the type `&SomeEnum`, which is not an enum error: aborting due to 9 previous errors