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Diffstat (limited to 'tests/ui/functions-closures/copy-closure.rs')
-rw-r--r-- | tests/ui/functions-closures/copy-closure.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/functions-closures/copy-closure.rs b/tests/ui/functions-closures/copy-closure.rs new file mode 100644 index 000000000..72da02421 --- /dev/null +++ b/tests/ui/functions-closures/copy-closure.rs @@ -0,0 +1,16 @@ +// run-pass +// Check that closures implement `Copy`. + +fn call<T, F: FnOnce() -> T>(f: F) -> T { f() } + +fn main() { + let a = 5; + let hello = || { + println!("Hello {}", a); + a + }; + + assert_eq!(5, call(hello.clone())); + assert_eq!(5, call(hello)); + assert_eq!(5, call(hello)); +} |