Implement os.abort

Author: minoring

vm/src/stdlib/os.rs

@@ -714,6 +714,14 @@ mod _os {
         std::process::exit(code)
     }
 
+    #[pyfunction]
+    fn abort() {
+        extern "C" {
+            fn abort();
+        }
+        unsafe { abort() }
+    }
+
     #[pyfunction]
     fn urandom(size: usize, vm: &VirtualMachine) -> PyResult<Vec<u8>> {
         let mut buf = vec![0u8; size];