Init.

1 files changed, 62 insertions, 0 deletions

diff --git a/rust-book/advanced/unsafe-rust/src/main.rs b/rust-book/advanced/unsafe-rust/src/main.rs
new file mode 100755
index 0000000..c9967a8
--- /dev/null
+++ b/rust-book/advanced/unsafe-rust/src/main.rs
@@ -0,0 +1,62 @@
+fn main() {
+    let mut num = 5;
+
+    let r1 = &num as *const i32;
+    let r2 = &mut num as *mut i32;
+
+    let address = 0x012345usize;
+    let r = address as *const i32;
+
+    unsafe {
+        println!("{}", *r1);
+        println!("{}", *r2);
+    }
+
+    unsafe {
+        dangerous();
+    }
+
+
+    unsafe {
+        println!("c call: {}", abs(-3));
+    }
+
+
+    unsafe {
+        HELLO_WORLD = "test";
+        println!("{}", HELLO_WORLD);
+    }
+    println!("{}", HI_THERE);
+
+    add_to_count(3);
+
+    unsafe { 
+        println!("counter: {}", COUNTER);
+    }
+}
+
+unsafe fn dangerous() {}
+
+extern "C" {
+    fn abs(input: i32) -> i32;
+}
+
+static mut HELLO_WORLD: &str = "hello world";
+static mut COUNTER: u32 = 0;
+
+fn add_to_count(inc: u32) {
+    unsafe {
+        COUNTER += inc;
+    }
+}
+
+const HI_THERE: &str = "hi there";
+
+unsafe trait Foo {
+    // methods
+}
+
+unsafe impl Foo for i32 {
+    // implementations
+}
+