Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 45 insertions, 0 deletions

diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-15/Cargo.lock b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/Cargo.lock
new file mode 100644
index 000000000..eb8a2817a
--- /dev/null
+++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "drop-example"
+version = "0.1.0"
+
diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-15/Cargo.toml b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/Cargo.toml
new file mode 100644
index 000000000..1e4c99481
--- /dev/null
+++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "drop-example"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-15/output.txt b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/output.txt
new file mode 100644
index 000000000..a38c9ccb7
--- /dev/null
+++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/output.txt
@@ -0,0 +1,13 @@
+$ cargo run
+   Compiling drop-example v0.1.0 (file:///projects/drop-example)
+error[E0040]: explicit use of destructor method
+  --> src/main.rs:16:7
+   |
+16 |     c.drop();
+   |     --^^^^--
+   |     | |
+   |     | explicit destructor calls not allowed
+   |     help: consider using `drop` function: `drop(c)`
+
+For more information about this error, try `rustc --explain E0040`.
+error: could not compile `drop-example` due to previous error
diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-15/src/main.rs b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/src/main.rs
new file mode 100644
index 000000000..ff3b391a9
--- /dev/null
+++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-15/src/main.rs
@@ -0,0 +1,20 @@
+struct CustomSmartPointer {
+    data: String,
+}
+
+impl Drop for CustomSmartPointer {
+    fn drop(&mut self) {
+        println!("Dropping CustomSmartPointer with data `{}`!", self.data);
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    let c = CustomSmartPointer {
+        data: String::from("some data"),
+    };
+    println!("CustomSmartPointer created.");
+    c.drop();
+    println!("CustomSmartPointer dropped before the end of main.");
+}
+// ANCHOR_END: here