1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/big-literals.rs b/tests/ui/big-literals.rs
new file mode 100644
index 00000000000..96ea115c877
--- /dev/null
+++ b/tests/ui/big-literals.rs
@@ -0,0 +1,17 @@
+// run-pass
+// Catch mistakes in the overflowing literals lint.
+#![deny(overflowing_literals)]
+
+pub fn main() {
+    assert_eq!(0xffffffff, (!0 as u32));
+    assert_eq!(4294967295, (!0 as u32));
+    assert_eq!(0xffffffffffffffff, (!0 as u64));
+    assert_eq!(18446744073709551615, (!0 as u64));
+
+    assert_eq!((-2147483648i32).wrapping_sub(1), 2147483647);
+
+    assert_eq!(-3.40282356e+38_f32, f32::MIN);
+    assert_eq!(3.40282356e+38_f32, f32::MAX);
+    assert_eq!(-1.7976931348623158e+308_f64, f64::MIN);
+    assert_eq!(1.7976931348623158e+308_f64, f64::MAX);
+}