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

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

5 files changed, 48 insertions, 0 deletions

diff --git a/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.lock b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.lock
new file mode 100644
index 000000000..89a654d69
--- /dev/null
+++ b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.toml b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.toml
new file mode 100644
index 000000000..478b346fd
--- /dev/null
+++ b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "functions"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/output.txt b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/output.txt
new file mode 100644
index 000000000..a5a85f4f6
--- /dev/null
+++ b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/output.txt
@@ -0,0 +1,34 @@
+$ cargo run
+   Compiling functions v0.1.0 (file:///projects/functions)
+error: expected expression, found statement (`let`)
+ --> src/main.rs:2:14
+  |
+2 |     let x = (let y = 6);
+  |              ^^^^^^^^^
+  |
+  = note: variable declaration using `let` is a statement
+
+error[E0658]: `let` expressions in this position are unstable
+ --> src/main.rs:2:14
+  |
+2 |     let x = (let y = 6);
+  |              ^^^^^^^^^
+  |
+  = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
+
+warning: unnecessary parentheses around assigned value
+ --> src/main.rs:2:13
+  |
+2 |     let x = (let y = 6);
+  |             ^         ^
+  |
+  = note: `#[warn(unused_parens)]` on by default
+help: remove these parentheses
+  |
+2 -     let x = (let y = 6);
+2 +     let x = let y = 6;
+  | 
+
+For more information about this error, try `rustc --explain E0658`.
+warning: `functions` (bin "functions") generated 1 warning
+error: could not compile `functions` due to 2 previous errors; 1 warning emitted
diff --git a/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/rustfmt-ignore b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/rustfmt-ignore
new file mode 100644
index 000000000..06a976dd4
--- /dev/null
+++ b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/rustfmt-ignore
@@ -0,0 +1 @@
+This listing deliberately doesn't parse so rustfmt fails.
diff --git a/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/src/main.rs b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/src/main.rs
new file mode 100644
index 000000000..988f9653e
--- /dev/null
+++ b/src/doc/book/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let x = (let y = 6);
+}