diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/specialization/specialization-overlap-projection.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/specialization/specialization-overlap-projection.rs')
-rw-r--r-- | src/test/ui/specialization/specialization-overlap-projection.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/specialization/specialization-overlap-projection.rs b/src/test/ui/specialization/specialization-overlap-projection.rs new file mode 100644 index 000000000..b07efb2a5 --- /dev/null +++ b/src/test/ui/specialization/specialization-overlap-projection.rs @@ -0,0 +1,25 @@ +// run-pass + +// Test that impls on projected self types can resolve overlap, even when the +// projections involve specialization, so long as the associated type is +// provided by the most specialized impl. + +#![feature(specialization)] //~ WARN the feature `specialization` is incomplete + +trait Assoc { + type Output; +} + +impl<T> Assoc for T { + default type Output = bool; +} + +impl Assoc for u8 { type Output = u8; } +impl Assoc for u16 { type Output = u16; } + +trait Foo {} +impl Foo for u32 {} +impl Foo for <u8 as Assoc>::Output {} +impl Foo for <u16 as Assoc>::Output {} + +fn main() {} |