diff options
Diffstat (limited to 'tests/ui/transmutability/primitives')
5 files changed, 40 insertions, 8 deletions
diff --git a/tests/ui/transmutability/primitives/bool-mut.rs b/tests/ui/transmutability/primitives/bool-mut.rs new file mode 100644 index 000000000..49dbe90e4 --- /dev/null +++ b/tests/ui/transmutability/primitives/bool-mut.rs @@ -0,0 +1,17 @@ +// check-fail +//[next] compile-flags: -Ztrait-solver=next + +#![feature(transmutability)] +mod assert { + use std::mem::{Assume, BikeshedIntrinsicFrom}; + pub struct Context; + + pub fn is_transmutable<Src, Dst>() + where + Dst: BikeshedIntrinsicFrom<Src, Context, { Assume::SAFETY }> + {} +} + +fn main() { + assert::is_transmutable::<&'static mut bool, &'static mut u8>() //~ ERROR cannot be safely transmuted +} diff --git a/tests/ui/transmutability/primitives/bool-mut.stderr b/tests/ui/transmutability/primitives/bool-mut.stderr new file mode 100644 index 000000000..b36991e1c --- /dev/null +++ b/tests/ui/transmutability/primitives/bool-mut.stderr @@ -0,0 +1,18 @@ +error[E0277]: `u8` cannot be safely transmuted into `bool` in the defining scope of `assert::Context` + --> $DIR/bool-mut.rs:16:50 + | +LL | assert::is_transmutable::<&'static mut bool, &'static mut u8>() + | ^^^^^^^^^^^^^^^ At least one value of `u8` isn't a bit-valid value of `bool` + | +note: required by a bound in `is_transmutable` + --> $DIR/bool-mut.rs:11:14 + | +LL | pub fn is_transmutable<Src, Dst>() + | --------------- required by a bound in this function +LL | where +LL | Dst: BikeshedIntrinsicFrom<Src, Context, { Assume::SAFETY }> + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_transmutable` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/transmutability/primitives/bool.current.stderr b/tests/ui/transmutability/primitives/bool.current.stderr index 47c8438a2..4b3eb6c51 100644 --- a/tests/ui/transmutability/primitives/bool.current.stderr +++ b/tests/ui/transmutability/primitives/bool.current.stderr @@ -1,11 +1,11 @@ error[E0277]: `u8` cannot be safely transmuted into `bool` in the defining scope of `assert::Context` - --> $DIR/bool.rs:24:35 + --> $DIR/bool.rs:21:35 | LL | assert::is_transmutable::<u8, bool>(); | ^^^^ At least one value of `u8` isn't a bit-valid value of `bool` | note: required by a bound in `is_transmutable` - --> $DIR/bool.rs:14:14 + --> $DIR/bool.rs:11:14 | LL | pub fn is_transmutable<Src, Dst>() | --------------- required by a bound in this function diff --git a/tests/ui/transmutability/primitives/bool.next.stderr b/tests/ui/transmutability/primitives/bool.next.stderr index 47c8438a2..4b3eb6c51 100644 --- a/tests/ui/transmutability/primitives/bool.next.stderr +++ b/tests/ui/transmutability/primitives/bool.next.stderr @@ -1,11 +1,11 @@ error[E0277]: `u8` cannot be safely transmuted into `bool` in the defining scope of `assert::Context` - --> $DIR/bool.rs:24:35 + --> $DIR/bool.rs:21:35 | LL | assert::is_transmutable::<u8, bool>(); | ^^^^ At least one value of `u8` isn't a bit-valid value of `bool` | note: required by a bound in `is_transmutable` - --> $DIR/bool.rs:14:14 + --> $DIR/bool.rs:11:14 | LL | pub fn is_transmutable<Src, Dst>() | --------------- required by a bound in this function diff --git a/tests/ui/transmutability/primitives/bool.rs b/tests/ui/transmutability/primitives/bool.rs index de77cfc78..654e7b47e 100644 --- a/tests/ui/transmutability/primitives/bool.rs +++ b/tests/ui/transmutability/primitives/bool.rs @@ -1,10 +1,7 @@ // revisions: current next //[next] compile-flags: -Ztrait-solver=next -#![crate_type = "lib"] #![feature(transmutability)] -#![allow(dead_code)] -#![allow(incomplete_features)] mod assert { use std::mem::{Assume, BikeshedIntrinsicFrom}; pub struct Context; @@ -20,7 +17,7 @@ mod assert { {} } -fn contrast_with_u8() { +fn main() { assert::is_transmutable::<u8, bool>(); //~ ERROR cannot be safely transmuted assert::is_maybe_transmutable::<u8, bool>(); assert::is_transmutable::<bool, u8>(); |