diff options
Diffstat (limited to 'src/test/ui/iterators/iter-position-overflow-debug.rs')
-rw-r--r-- | src/test/ui/iterators/iter-position-overflow-debug.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/iterators/iter-position-overflow-debug.rs b/src/test/ui/iterators/iter-position-overflow-debug.rs new file mode 100644 index 000000000..65124c282 --- /dev/null +++ b/src/test/ui/iterators/iter-position-overflow-debug.rs @@ -0,0 +1,22 @@ +// run-pass +// only-32bit too impatient for 2⁶⁴ items +// needs-unwind +// ignore-wasm32-bare compiled with panic=abort by default +// compile-flags: -C debug_assertions=yes -C opt-level=3 + +use std::panic; + +fn main() { + let n = usize::MAX as u64; + assert_eq!((0..).by_ref().position(|i| i >= n), Some(usize::MAX)); + + let r = panic::catch_unwind(|| { + (0..).by_ref().position(|i| i > n) + }); + assert!(r.is_err()); + + let r = panic::catch_unwind(|| { + (0..=n + 1).by_ref().position(|_| false) + }); + assert!(r.is_err()); +} |