diff options
Diffstat (limited to 'src/test/ui/mismatched_types/cast-rfc0401.stderr')
| -rw-r--r-- | src/test/ui/mismatched_types/cast-rfc0401.stderr | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/test/ui/mismatched_types/cast-rfc0401.stderr b/src/test/ui/mismatched_types/cast-rfc0401.stderr new file mode 100644 index 000000000..eab8e8e80 --- /dev/null +++ b/src/test/ui/mismatched_types/cast-rfc0401.stderr @@ -0,0 +1,254 @@ +error[E0606]: casting `*const U` as `*const V` is invalid + --> $DIR/cast-rfc0401.rs:3:5 + | +LL | u as *const V + | ^^^^^^^^^^^^^ + | + = note: vtable kinds may not match + +error[E0606]: casting `*const U` as `*const str` is invalid + --> $DIR/cast-rfc0401.rs:8:5 + | +LL | u as *const str + | ^^^^^^^^^^^^^^^ + | + = note: vtable kinds may not match + +error[E0609]: no field `f` on type `fn() {main}` + --> $DIR/cast-rfc0401.rs:65:18 + | +LL | let _ = main.f as *const u32; + | ^ + +error[E0605]: non-primitive cast: `*const u8` as `&u8` + --> $DIR/cast-rfc0401.rs:29:13 + | +LL | let _ = v as &u8; + | ^^^^^^^^ invalid cast + | +help: consider borrowing the value + | +LL - let _ = v as &u8; +LL + let _ = &*v; + | + +error[E0605]: non-primitive cast: `*const u8` as `E` + --> $DIR/cast-rfc0401.rs:30:13 + | +LL | let _ = v as E; + | ^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object + +error[E0605]: non-primitive cast: `*const u8` as `fn()` + --> $DIR/cast-rfc0401.rs:31:13 + | +LL | let _ = v as fn(); + | ^^^^^^^^^ invalid cast + +error[E0605]: non-primitive cast: `*const u8` as `(u32,)` + --> $DIR/cast-rfc0401.rs:32:13 + | +LL | let _ = v as (u32,); + | ^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object + +error[E0605]: non-primitive cast: `Option<&*const u8>` as `*const u8` + --> $DIR/cast-rfc0401.rs:33:13 + | +LL | let _ = Some(&v) as *const u8; + | ^^^^^^^^^^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object + +error[E0606]: casting `*const u8` as `f32` is invalid + --> $DIR/cast-rfc0401.rs:35:13 + | +LL | let _ = v as f32; + | ^^^^^^^^ + +error[E0606]: casting `fn() {main}` as `f64` is invalid + --> $DIR/cast-rfc0401.rs:36:13 + | +LL | let _ = main as f64; + | ^^^^^^^^^^^ + +error[E0606]: casting `&*const u8` as `usize` is invalid + --> $DIR/cast-rfc0401.rs:37:13 + | +LL | let _ = &v as usize; + | ^^^^^^^^^^^ + | + = help: cast through a raw pointer first + +error[E0606]: casting `f32` as `*const u8` is invalid + --> $DIR/cast-rfc0401.rs:38:13 + | +LL | let _ = f as *const u8; + | ^^^^^^^^^^^^^^ + +error[E0054]: cannot cast as `bool` + --> $DIR/cast-rfc0401.rs:39:13 + | +LL | let _ = 3_i32 as bool; + | ^^^^^^^^^^^^^ help: compare with zero instead: `3_i32 != 0` + +error[E0054]: cannot cast as `bool` + --> $DIR/cast-rfc0401.rs:40:13 + | +LL | let _ = E::A as bool; + | ^^^^^^^^^^^^ unsupported cast + +error[E0604]: only `u8` can be cast as `char`, not `u32` + --> $DIR/cast-rfc0401.rs:41:13 + | +LL | let _ = 0x61u32 as char; + | ^^^^^^^^^^^^^^^ + | | + | invalid cast + | help: try `char::from_u32` instead: `char::from_u32(0x61u32)` + +error[E0606]: casting `bool` as `f32` is invalid + --> $DIR/cast-rfc0401.rs:43:13 + | +LL | let _ = false as f32; + | ^^^^^^^^^^^^ + | + = help: cast through an integer first + +error[E0606]: casting `E` as `f32` is invalid + --> $DIR/cast-rfc0401.rs:44:13 + | +LL | let _ = E::A as f32; + | ^^^^^^^^^^^ + | + = help: cast through an integer first + +error[E0606]: casting `char` as `f32` is invalid + --> $DIR/cast-rfc0401.rs:45:13 + | +LL | let _ = 'a' as f32; + | ^^^^^^^^^^ + | + = help: cast through an integer first + +error[E0606]: casting `bool` as `*const u8` is invalid + --> $DIR/cast-rfc0401.rs:47:13 + | +LL | let _ = false as *const u8; + | ^^^^^^^^^^^^^^^^^^ + +error[E0606]: casting `E` as `*const u8` is invalid + --> $DIR/cast-rfc0401.rs:48:13 + | +LL | let _ = E::A as *const u8; + | ^^^^^^^^^^^^^^^^^ + +error[E0606]: casting `char` as `*const u8` is invalid + --> $DIR/cast-rfc0401.rs:49:13 + | +LL | let _ = 'a' as *const u8; + | ^^^^^^^^^^^^^^^^ + +error[E0606]: cannot cast `usize` to a pointer that is wide + --> $DIR/cast-rfc0401.rs:51:24 + | +LL | let _ = 42usize as *const [u8]; + | ------- ^^^^^^^^^^^ creating a `*const [u8]` requires both an address and a length + | | + | consider casting this expression to `*const ()`, then using `core::ptr::from_raw_parts` + +error[E0607]: cannot cast thin pointer `*const u8` to fat pointer `*const [u8]` + --> $DIR/cast-rfc0401.rs:52:13 + | +LL | let _ = v as *const [u8]; + | ^^^^^^^^^^^^^^^^ + +error[E0606]: casting `&dyn Foo` as `*const str` is invalid + --> $DIR/cast-rfc0401.rs:54:13 + | +LL | let _ = foo as *const str; + | ^^^^^^^^^^^^^^^^^ + +error[E0606]: casting `&dyn Foo` as `*mut str` is invalid + --> $DIR/cast-rfc0401.rs:55:13 + | +LL | let _ = foo as *mut str; + | ^^^^^^^^^^^^^^^ + +error[E0606]: casting `fn() {main}` as `*mut str` is invalid + --> $DIR/cast-rfc0401.rs:56:13 + | +LL | let _ = main as *mut str; + | ^^^^^^^^^^^^^^^^ + +error[E0606]: casting `&f32` as `*mut f32` is invalid + --> $DIR/cast-rfc0401.rs:57:13 + | +LL | let _ = &f as *mut f32; + | ^^^^^^^^^^^^^^ + +error[E0606]: casting `&f32` as `*const f64` is invalid + --> $DIR/cast-rfc0401.rs:58:13 + | +LL | let _ = &f as *const f64; + | ^^^^^^^^^^^^^^^^ + +error[E0606]: casting `*const [i8]` as `usize` is invalid + --> $DIR/cast-rfc0401.rs:59:13 + | +LL | let _ = fat_sv as usize; + | ^^^^^^^^^^^^^^^ + | + = help: cast through a thin pointer first + +error[E0606]: casting `*const dyn Foo` as `*const [u16]` is invalid + --> $DIR/cast-rfc0401.rs:68:13 + | +LL | let _ = cf as *const [u16]; + | ^^^^^^^^^^^^^^^^^^ + | + = note: vtable kinds may not match + +error[E0606]: casting `*const dyn Foo` as `*const dyn Bar` is invalid + --> $DIR/cast-rfc0401.rs:69:13 + | +LL | let _ = cf as *const dyn Bar; + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: vtable kinds may not match + +error[E0277]: the size for values of type `[u8]` cannot be known at compilation time + --> $DIR/cast-rfc0401.rs:53:13 + | +LL | let _ = fat_v as *const dyn Foo; + | ^^^^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `[u8]` + = note: required for the cast from `[u8]` to the object type `dyn Foo` +help: consider borrowing the value, since `&[u8]` can be coerced into `dyn Foo` + | +LL | let _ = &fat_v as *const dyn Foo; + | + + +error[E0277]: the size for values of type `str` cannot be known at compilation time + --> $DIR/cast-rfc0401.rs:62:13 + | +LL | let _ = a as *const dyn Foo; + | ^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `str` + = note: required for the cast from `str` to the object type `dyn Foo` +help: consider borrowing the value, since `&str` can be coerced into `dyn Foo` + | +LL | let _ = &a as *const dyn Foo; + | + + +error[E0606]: casting `&{float}` as `f32` is invalid + --> $DIR/cast-rfc0401.rs:71:30 + | +LL | vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>(); + | -^^^^^^^ + | | + | cannot cast `&{float}` as `f32` + | help: dereference the expression: `*s` + +error: aborting due to 34 previous errors + +Some errors have detailed explanations: E0054, E0277, E0604, E0605, E0606, E0607, E0609. +For more information about an error, try `rustc --explain E0054`. |