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, 51 insertions, 0 deletions

diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.lock b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.lock
new file mode 100644
index 000000000..2aa4918e5
--- /dev/null
+++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.toml b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.toml
new file mode 100644
index 000000000..e8847526d
--- /dev/null
+++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt
new file mode 100644
index 000000000..62dc4ad52
--- /dev/null
+++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling ownership v0.1.0 (file:///projects/ownership)
+error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
+  --> src/main.rs:18:5
+   |
+16 |     let word = first_word(&s);
+   |                           -- immutable borrow occurs here
+17 | 
+18 |     s.clear(); // error!
+   |     ^^^^^^^^^ mutable borrow occurs here
+19 | 
+20 |     println!("the first word is: {}", word);
+   |                                       ---- immutable borrow later used here
+
+For more information about this error, try `rustc --explain E0502`.
+error: could not compile `ownership` due to previous error
diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs
new file mode 100644
index 000000000..99e04018d
--- /dev/null
+++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs
@@ -0,0 +1,23 @@
+fn first_word(s: &String) -> &str {
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return &s[0..i];
+        }
+    }
+
+    &s[..]
+}
+
+// ANCHOR: here
+fn main() {
+    let mut s = String::from("hello world");
+
+    let word = first_word(&s);
+
+    s.clear(); // error!
+
+    println!("the first word is: {}", word);
+}
+// ANCHOR_END: here