2016 Update

Task/Integer-overflow/Rust/integer-overflow-1.rust

@@ -0,0 +1,13 @@
+    // The following will panic!
+    let i32_1 : i32 = -(-2_147_483_647 - 1);
+    let i32_2 : i32 = 2_000_000_000 + 2_000_000_000;
+    let i32_3 : i32 = -2_147_483_647 - 2_147_483_647;
+    let i32_4 : i32 = 46341 * 46341;
+    let i32_5 : i32 = (-2_147_483_647 - 1) / -1;
+
+    // These will panic! also
+    let i64_1 : i64 = -(-9_223_372_036_854_775_807 - 1);
+    let i64_2 : i64 = 5_000_000_000_000_000_000 + 5_000_000_000_000_000_000;
+    let i64_3 : i64 = -9_223_372_036_854_775_807 - 9_223_372_036_854_775_807;
+    let i64_4 : i64 = 3_037_000_500 * 3_037_000_500;
+    let i64_5 : i64 = (-9_223_372_036_854_775_807 - 1) / -1;

Task/Integer-overflow/Rust/integer-overflow-2.rust

@@ -0,0 +1,21 @@
+    // The following will panic!, but only in release mode
+    let u32_1 : u32 = !4_294_967_295 + 1;
+    let u32_2 : u32 = 3_000_000_000 + 3_000_000_000;
+    let u32_3 : u32 = 2_147_483_647 - 4_294_967_295;
+    let u32_4 : u32 = 65_537 * 65_537;
+
+    // The following panics! in release mode
+    let u64_1 : u64 = !18_446_744_073_709_551_615 + 1;
+    let u64_2 : u64 = 10_000_000_000_000_000_000 + 10_000_000_000_000_000_000;
+    let u64_3 : u64 = 9_223_372_036_854_775_807 - 18_446_744_073_709_551_615;
+    let u64_4 : u64 = 4_294_967_296 * 4_294_967_296;
+
+    println!("{}", u32_1); // 1
+    println!("{}", u32_2); // 1705032704
+    println!("{}", u32_3); // 2147483648
+    println!("{}", u32_4); // 131703
+
+    println!("{}", u64_1); // 1
+    println!("{}", u64_2); // 1553255926290448384
+    println!("{}", u64_3); // 9223372036854775808
+    println!("{}", u64_4); // 0

Task/Integer-overflow/Rust/integer-overflow-3.rust

@@ -0,0 +1,9 @@
+    // The following will never panic!
+    println!("{:?}", 65_537u32.checked_mul(65_537));    // None
+    println!("{:?}", 65_537u32.saturating_mul(65_537)); // 4294967295
+    println!("{:?}", 65_537u32.wrapping_mul(65_537));   // 131073
+
+    // These will never panic! either
+    println!("{:?}", 65_537i32.checked_mul(65_537));     // None
+    println!("{:?}", 65_537i32.saturating_mul(65_537));  // 2147483647
+    println!("{:?}", 65_537i32.wrapping_mul(-65_537));   // -131073