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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/type-alias-impl-trait/no_inferrable_concrete_type.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/type-alias-impl-trait/no_inferrable_concrete_type.rs')
-rw-r--r-- | tests/ui/type-alias-impl-trait/no_inferrable_concrete_type.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/no_inferrable_concrete_type.rs b/tests/ui/type-alias-impl-trait/no_inferrable_concrete_type.rs new file mode 100644 index 000000000..0f0a02e97 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/no_inferrable_concrete_type.rs @@ -0,0 +1,18 @@ +// Issue 52985: user code provides no use case that allows a type alias `impl Trait` +// We now emit a 'unconstrained opaque type' error + +#![feature(type_alias_impl_trait)] + +mod foo { + pub type Foo = impl Copy; + //~^ ERROR unconstrained opaque type + + // make compiler happy about using 'Foo' + pub fn bar(x: Foo) -> Foo { + x + } +} + +fn main() { + let _: foo::Foo = std::mem::transmute(0u8); +} |