diff options
Diffstat (limited to 'src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce.rs')
-rw-r--r-- | src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce.rs b/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce.rs new file mode 100644 index 000000000..3c8ea7d85 --- /dev/null +++ b/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce.rs @@ -0,0 +1,25 @@ +// run-pass +// Test that we are able to infer a suitable kind for this closure +// that is just called (`FnOnce`). + +use std::mem; + +struct DropMe<'a>(&'a mut i32); + +impl<'a> Drop for DropMe<'a> { + fn drop(&mut self) { + *self.0 += 1; + } +} + +fn main() { + let mut counter = 0; + + { + let drop_me = DropMe(&mut counter); + let tick = || mem::drop(drop_me); + tick(); + } + + assert_eq!(counter, 1); +} |