feat: add main5

__ffi/c_layout/src/main.rs

@@ -2,6 +2,7 @@ mod main_1;
 mod main_2;
 mod main_3;
 mod main_4;
+mod main_5;
 
 fn main() {
     println!("{}", "-".repeat(88));
@@ -12,4 +13,6 @@ fn main() {
     main_3::run_main();
     println!("{}", "-".repeat(88));
     main_4::run_main();
+    println!("{}", "-".repeat(88));
+    main_5::run_main();
 }

__ffi/c_layout/src/main_5.rs

@@ -0,0 +1,24 @@
+use zerocopy::FromBytes;
+use zerocopy::AsBytes;
+// use zerocopy::Unaligned;
+use zerocopy::LayoutVerified;
+use std::ops::Deref;
+
+#[derive(FromBytes, AsBytes, Debug)]
+#[repr(C)]
+struct Header {
+    name: [u8; 4],
+    size: u32,
+    reserved: u64,
+}
+
+pub fn run_main() {
+    let h = Header {
+        name: [1,2,3,4],
+        size: 0xabcdef,
+        reserved: 0x0123456789abcdef,
+    };
+    println!("{:?}", h.as_bytes());
+    let h2: Option<LayoutVerified<&[u8], [Header]>> = LayoutVerified::new_slice(h.as_bytes());
+    println!("{:?}", h2.unwrap().deref()[0]);
+}