diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/ui/async-await/async-closures/type-name.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/async-await/async-closures/type-name.rs b/tests/ui/async-await/async-closures/type-name.rs new file mode 100644 index 00000000000..12daad5a609 --- /dev/null +++ b/tests/ui/async-await/async-closures/type-name.rs @@ -0,0 +1,18 @@ +//@ run-pass +//@ edition: 2024 + +fn once<F: FnOnce() -> T, T>(f: F) -> T { + f() +} + +fn main() { + let closure = async || {}; + + // Name of future when called normally. + let name = std::any::type_name_of_val(&closure()); + assert_eq!(name, "type_name::main::{{closure}}::{{closure}}"); + + // Name of future when closure is called via its FnOnce shim. + let name = std::any::type_name_of_val(&once(closure)); + assert_eq!(name, "type_name::main::{{closure}}::{{closure}}::{{call_once}}"); +} |
