From cf2dff2b1e3fa55fa5415d524200070d0d7aacfe Mon Sep 17 00:00:00 2001
From: Albert Larsan <74931857+albertlarsan68@users.noreply.github.com>
Date: Thu, 5 Jan 2023 09:13:28 +0100
Subject: Move /src/test to /tests

---
 tests/ui/consts/const-int-arithmetic-overflow.rs | 25 ++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 tests/ui/consts/const-int-arithmetic-overflow.rs

(limited to 'tests/ui/consts/const-int-arithmetic-overflow.rs')

diff --git a/tests/ui/consts/const-int-arithmetic-overflow.rs b/tests/ui/consts/const-int-arithmetic-overflow.rs
new file mode 100644
index 00000000000..6446e94513c
--- /dev/null
+++ b/tests/ui/consts/const-int-arithmetic-overflow.rs
@@ -0,0 +1,25 @@
+// run-pass
+// compile-flags: -O
+
+// Make sure arithmetic unary/binary ops actually return the right result, even when overflowing.
+// We have to put them in `const fn` and turn on optimizations to avoid overflow checks.
+
+const fn add(x: i8, y: i8) -> i8 { x+y }
+const fn sub(x: i8, y: i8) -> i8 { x-y }
+const fn mul(x: i8, y: i8) -> i8 { x*y }
+// div and rem are always checked, so we cannot test their result in case of overflow.
+const fn neg(x: i8) -> i8 { -x }
+
+fn main() {
+    const ADD_OFLOW: i8 = add(100, 100);
+    assert_eq!(ADD_OFLOW, -56);
+
+    const SUB_OFLOW: i8 = sub(100, -100);
+    assert_eq!(SUB_OFLOW, -56);
+
+    const MUL_OFLOW: i8 = mul(-100, -2);
+    assert_eq!(MUL_OFLOW, -56);
+
+    const NEG_OFLOW: i8 = neg(-128);
+    assert_eq!(NEG_OFLOW, -128);
+}
-- 
cgit 1.4.1-3-g733a5