diff options
Diffstat (limited to 'tests/ui/transmutability/malformed-program-gracefulness/wrong-type-assume.rs')
-rw-r--r-- | tests/ui/transmutability/malformed-program-gracefulness/wrong-type-assume.rs | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/tests/ui/transmutability/malformed-program-gracefulness/wrong-type-assume.rs b/tests/ui/transmutability/malformed-program-gracefulness/wrong-type-assume.rs new file mode 100644 index 000000000..52aa4bb31 --- /dev/null +++ b/tests/ui/transmutability/malformed-program-gracefulness/wrong-type-assume.rs @@ -0,0 +1,53 @@ +//! The implementation must behave well if const values of wrong types are +//! provided. + +#![crate_type = "lib"] +#![feature(adt_const_params)] +#![feature(generic_const_exprs)] +#![feature(transmutability)] +#![allow(dead_code, incomplete_features, non_camel_case_types)] + +mod assert { + use std::mem::{Assume, BikeshedIntrinsicFrom}; + + pub fn is_transmutable< + Src, + Dst, + Context, + const ASSUME_ALIGNMENT: bool, + const ASSUME_LIFETIMES: bool, + const ASSUME_SAFETY: bool, + const ASSUME_VALIDITY: bool, + >() + where + Dst: BikeshedIntrinsicFrom< + Src, + Context, + { from_options(ASSUME_ALIGNMENT, ASSUME_LIFETIMES, ASSUME_SAFETY, ASSUME_VALIDITY) } + >, + {} + + const fn from_options( + alignment: bool, + lifetimes: bool, + safety: bool, + validity: bool, + ) -> Assume { + Assume { + alignment, + lifetimes, + safety, + validity, + } + } +} + +fn test() { + struct Context; + #[repr(C)] struct Src; + #[repr(C)] struct Dst; + assert::is_transmutable::<Src, Dst, Context, {0u8}, false, false, false>(); //~ ERROR mismatched types + assert::is_transmutable::<Src, Dst, Context, false, {0u8}, false, false>(); //~ ERROR mismatched types + assert::is_transmutable::<Src, Dst, Context, false, false, {0u8}, false>(); //~ ERROR mismatched types + assert::is_transmutable::<Src, Dst, Context, false, false, false, {0u8}>(); //~ ERROR mismatched types +} |