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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/impl-trait/equality.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/impl-trait/equality.rs')
-rw-r--r-- | src/test/ui/impl-trait/equality.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/equality.rs b/src/test/ui/impl-trait/equality.rs new file mode 100644 index 000000000..828b5aac8 --- /dev/null +++ b/src/test/ui/impl-trait/equality.rs @@ -0,0 +1,43 @@ +#![feature(specialization)] //~ WARN the feature `specialization` is incomplete + +trait Foo: Copy + ToString {} + +impl<T: Copy + ToString> Foo for T {} + +fn hide<T: Foo>(x: T) -> impl Foo { + x +} + +fn two(x: bool) -> impl Foo { + if x { + return 1_i32; + } + 0_u32 + //~^ ERROR mismatched types + //~| expected `i32`, found `u32` +} + +fn sum_to(n: u32) -> impl Foo { + if n == 0 { + 0 + } else { + n + sum_to(n - 1) + //~^ ERROR cannot add `impl Foo` to `u32` + } +} + +trait Leak: Sized { + type T; + fn leak(self) -> Self::T; +} +impl<T> Leak for T { + default type T = (); + default fn leak(self) -> Self::T { panic!() } +} +impl Leak for i32 { + type T = i32; + fn leak(self) -> i32 { self } +} + +fn main() { +} |