1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/mir/mir_overflow_off.rs b/src/test/ui/mir/mir_overflow_off.rs
new file mode 100644
index 000000000..0098584dd
--- /dev/null
+++ b/src/test/ui/mir/mir_overflow_off.rs
@@ -0,0 +1,17 @@
+// run-pass
+// compile-flags: -C overflow-checks=off
+
+// Test that with MIR codegen, overflow checks can be
+// turned off, even when they're from core::ops::*.
+
+use std::ops::*;
+
+fn main() {
+    assert_eq!(i8::neg(-0x80), -0x80);
+
+    assert_eq!(u8::add(0xff, 1), 0_u8);
+    assert_eq!(u8::sub(0, 1), 0xff_u8);
+    assert_eq!(u8::mul(0xff, 2), 0xfe_u8);
+    assert_eq!(u8::shl(1, 9), 2_u8);
+    assert_eq!(u8::shr(2, 9), 1_u8);
+}