diff --git a/src/main.rs b/src/main.rs
index f39946d..bce2b26 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,27 +3,47 @@ mod defs;
 use defs::myMacro;
 use reqwest;
 
+fn my_function() {
+    println!("Hello from my_function.");
+}
+
+// conditional compilation
+#[cfg(false)]
+fn not_compiled_function() {
+    println!("Hello from not_compiled_function.");
+    my_function();
+    my_function();
+    my_function();
+    my_function();
+    my_function();
+    myMacro!();
+    myMacro!();
+    myMacro!();
+    myMacro!();
+    myMacro!();
+}
+
 fn main() {
-    // use some macros
-    println!("Hello, world!");
+    println!("Hello from main.");
+    my_function();
     myMacro!();
 
     // cleartext logging
-    let password = "123456";
-    println!("logging in (password is: {password})");
+    let password2 = "123456";
+    println!("logging in (password is: {password2})");
 
     // use of HTTP
-    let page_data = reqwest::blocking::get("http://example.com/").unwrap().text().unwrap();
+    let page_data = reqwest::blocking::get("http://example.com/2/").unwrap().text().unwrap();
     println!("web data = {page_data}");
 
     // weak hashing
-    let digest = format!("{:x}", md5::compute(password));
+    let digest = format!("{:x}", md5::compute(password2));
     println!("digest = {digest}");
 
     // uncontrolled allocation size
     let size = page_data.parse::<usize>().unwrap_or(1024);
     println!("size = {size}");
-    let layout = std::alloc::Layout::from_size_align(size, 1).unwrap();
+    let layout = std::alloc::Layout::from_size_align(size + 2, 1).unwrap();
 
     unsafe {
         let ptr = std::alloc::alloc(layout);
@@ -31,7 +51,9 @@ fn main() {
         // access after deallocation
     	std::alloc::dealloc(ptr, layout);
 
-        let data = *ptr;
-        println!("data = {data}");
+        let data2 = *ptr;
+        println!("data2 = {data2}");
     }
+
+    println!("end.");
 }