Auto merge of #63692 - iluuu1994:issue-49660, r=sfackler

Test that Wrapping arithmetic ops are implemented for all int types

Closes #49660

Author: bors

src/libcore/num/wrapping.rs

@@ -18,6 +18,8 @@ macro_rules! sh_impl_signed {
                 }
             }
         }
+        forward_ref_binop! { impl Shl, shl for Wrapping<$t>, $f,
+                #[stable(feature = "wrapping_ref_ops", since = "1.39.0")] }
 
         #[stable(feature = "op_assign_traits", since = "1.8.0")]
         impl ShlAssign<$f> for Wrapping<$t> {
@@ -41,6 +43,8 @@ macro_rules! sh_impl_signed {
                 }
             }
         }
+        forward_ref_binop! { impl Shr, shr for Wrapping<$t>, $f,
+                #[stable(feature = "wrapping_ref_ops", since = "1.39.0")] }
 
         #[stable(feature = "op_assign_traits", since = "1.8.0")]
         impl ShrAssign<$f> for Wrapping<$t> {
@@ -64,6 +68,8 @@ macro_rules! sh_impl_unsigned {
                 Wrapping(self.0.wrapping_shl((other & self::shift_max::$t as $f) as u32))
             }
         }
+        forward_ref_binop! { impl Shl, shl for Wrapping<$t>, $f,
+                #[stable(feature = "wrapping_ref_ops", since = "1.39.0")] }
 
         #[stable(feature = "op_assign_traits", since = "1.8.0")]
         impl ShlAssign<$f> for Wrapping<$t> {
@@ -83,6 +89,8 @@ macro_rules! sh_impl_unsigned {
                 Wrapping(self.0.wrapping_shr((other & self::shift_max::$t as $f) as u32))
             }
         }
+        forward_ref_binop! { impl Shr, shr for Wrapping<$t>, $f,
+                #[stable(feature = "wrapping_ref_ops", since = "1.39.0")] }
 
         #[stable(feature = "op_assign_traits", since = "1.8.0")]
         impl ShrAssign<$f> for Wrapping<$t> {

src/test/ui/wrapping-int-combinations.rs

@@ -0,0 +1,77 @@
+// run-pass
+
+use std::num::Wrapping;
+
+macro_rules! wrapping_operation {
+    ($result:expr, $lhs:ident $op:tt $rhs:expr) => {
+        assert_eq!($result, $lhs $op $rhs);
+        assert_eq!($result, &$lhs $op $rhs);
+        assert_eq!($result, $lhs $op &$rhs);
+        assert_eq!($result, &$lhs $op &$rhs);
+    };
+    ($result:expr, $op:tt $expr:expr) => {
+        assert_eq!($result, $op $expr);
+        assert_eq!($result, $op &$expr);
+    };
+}
+
+macro_rules! wrapping_assignment {
+    ($result:expr, $lhs:ident $op:tt $rhs:expr) => {
+        let mut lhs1 = $lhs;
+        lhs1 $op $rhs;
+        assert_eq!($result, lhs1);
+
+        let mut lhs2 = $lhs;
+        lhs2 $op &$rhs;
+        assert_eq!($result, lhs2);
+    };
+}
+
+macro_rules! wrapping_test {
+    ($type:ty, $min:expr, $max:expr) => {
+        let zero: Wrapping<$type> = Wrapping(0);
+        let one: Wrapping<$type> = Wrapping(1);
+        let min: Wrapping<$type> = Wrapping($min);
+        let max: Wrapping<$type> = Wrapping($max);
+
+        wrapping_operation!(min, max + one);
+        wrapping_assignment!(min, max += one);
+        wrapping_operation!(max, min - one);
+        wrapping_assignment!(max, min -= one);
+        wrapping_operation!(max, max * one);
+        wrapping_assignment!(max, max *= one);
+        wrapping_operation!(max, max / one);
+        wrapping_assignment!(max, max /= one);
+        wrapping_operation!(zero, max % one);
+        wrapping_assignment!(zero, max %= one);
+        wrapping_operation!(zero, zero & max);
+        wrapping_assignment!(zero, zero &= max);
+        wrapping_operation!(max, zero | max);
+        wrapping_assignment!(max, zero |= max);
+        wrapping_operation!(zero, max ^ max);
+        wrapping_assignment!(zero, max ^= max);
+        wrapping_operation!(zero, zero << 1usize);
+        wrapping_assignment!(zero, zero <<= 1usize);
+        wrapping_operation!(zero, zero >> 1usize);
+        wrapping_assignment!(zero, zero >>= 1usize);
+        wrapping_operation!(zero, -zero);
+        wrapping_operation!(max, !min);
+    };
+}
+
+fn main() {
+    wrapping_test!(i8, std::i8::MIN, std::i8::MAX);
+    wrapping_test!(i16, std::i16::MIN, std::i16::MAX);
+    wrapping_test!(i32, std::i32::MIN, std::i32::MAX);
+    wrapping_test!(i64, std::i64::MIN, std::i64::MAX);
+    #[cfg(not(target_os = "emscripten"))]
+    wrapping_test!(i128, std::i128::MIN, std::i128::MAX);
+    wrapping_test!(isize, std::isize::MIN, std::isize::MAX);
+    wrapping_test!(u8, std::u8::MIN, std::u8::MAX);
+    wrapping_test!(u16, std::u16::MIN, std::u16::MAX);
+    wrapping_test!(u32, std::u32::MIN, std::u32::MAX);
+    wrapping_test!(u64, std::u64::MIN, std::u64::MAX);
+    #[cfg(not(target_os = "emscripten"))]
+    wrapping_test!(u128, std::u128::MIN, std::u128::MAX);
+    wrapping_test!(usize, std::usize::MIN, std::usize::MAX);
+}