diff options
Diffstat (limited to 'tests/ui/type-alias-impl-trait/issue-65679-inst-opaque-ty-from-val-twice.rs')
-rw-r--r-- | tests/ui/type-alias-impl-trait/issue-65679-inst-opaque-ty-from-val-twice.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/issue-65679-inst-opaque-ty-from-val-twice.rs b/tests/ui/type-alias-impl-trait/issue-65679-inst-opaque-ty-from-val-twice.rs new file mode 100644 index 000000000..72c22827f --- /dev/null +++ b/tests/ui/type-alias-impl-trait/issue-65679-inst-opaque-ty-from-val-twice.rs @@ -0,0 +1,18 @@ +// compile-flags: -Zsave-analysis +// check-pass + +#![feature(type_alias_impl_trait, rustc_attrs)] + +type T = impl Sized; +// The concrete type referred by impl-trait-type-alias(`T`) is guaranteed +// to be the same as where it occurs, whereas `impl Trait`'s instance is location sensitive; +// so difference assertion should not be declared on impl-trait-type-alias's instances. +// for details, check RFC-2515: +// https://github.com/rust-lang/rfcs/blob/master/text/2515-type_alias_impl_trait.md + +fn take(_: fn() -> T) {} + +fn main() { + take(|| {}); + take(|| {}); +} |