diff options
Diffstat (limited to 'tests/ui/internal-lints/rustc_pass_by_value_self.rs')
-rw-r--r-- | tests/ui/internal-lints/rustc_pass_by_value_self.rs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/tests/ui/internal-lints/rustc_pass_by_value_self.rs b/tests/ui/internal-lints/rustc_pass_by_value_self.rs new file mode 100644 index 000000000..6ce67dcaf --- /dev/null +++ b/tests/ui/internal-lints/rustc_pass_by_value_self.rs @@ -0,0 +1,54 @@ +// compile-flags: -Z unstable-options +// NOTE: This test doesn't actually require `fulldeps` +// so we could instead use it as a `ui` test. +// +// Considering that all other `internal-lints` are tested here +// this seems like the cleaner solution though. +#![feature(rustc_attrs)] +#![deny(rustc::pass_by_value)] +#![allow(unused)] + +#[rustc_pass_by_value] +struct TyCtxt<'tcx> { + inner: &'tcx (), +} + +impl<'tcx> TyCtxt<'tcx> { + fn by_value(self) {} // OK + fn by_ref(&self) {} //~ ERROR passing `TyCtxt<'tcx>` by reference +} + +struct TyS<'tcx> { + inner: &'tcx (), +} + +#[rustc_pass_by_value] +type Ty<'tcx> = &'tcx TyS<'tcx>; + +impl<'tcx> TyS<'tcx> { + fn by_value(self: Ty<'tcx>) {} + fn by_ref(self: &Ty<'tcx>) {} //~ ERROR passing `Ty<'tcx>` by reference +} + +#[rustc_pass_by_value] +struct Foo; + +impl Foo { + fn with_ref(&self) {} //~ ERROR passing `Foo` by reference +} + +#[rustc_pass_by_value] +struct WithParameters<T, const N: usize, M = u32> { + slice: [T; N], + m: M, +} + +impl<T> WithParameters<T, 1> { + fn with_ref(&self) {} //~ ERROR passing `WithParameters<T, 1>` by reference +} + +impl<T> WithParameters<T, 1, u8> { + fn with_ref(&self) {} //~ ERROR passing `WithParameters<T, 1, u8>` by reference +} + +fn main() {} |