diff options
Diffstat (limited to 'src/test/ui/type-alias-impl-trait/structural-match-no-leak.rs')
-rw-r--r-- | src/test/ui/type-alias-impl-trait/structural-match-no-leak.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/structural-match-no-leak.rs b/src/test/ui/type-alias-impl-trait/structural-match-no-leak.rs new file mode 100644 index 000000000..c2ab6a9d1 --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/structural-match-no-leak.rs @@ -0,0 +1,20 @@ +#![feature(type_alias_impl_trait)] + +type Bar = impl Send; + +// While i32 is structural-match, we do not want to leak this information. +// (See https://github.com/rust-lang/rust/issues/72156) +const fn leak_free() -> Bar { + 7i32 +} +const LEAK_FREE: Bar = leak_free(); + +fn leak_free_test() { + match LEAK_FREE { + LEAK_FREE => (), + //~^ `Bar` cannot be used in patterns + _ => (), + } +} + +fn main() {} |