From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../listings/ch09-error-handling/listing-09-10/Cargo.lock |  6 ++++++
 .../listings/ch09-error-handling/listing-09-10/Cargo.toml |  6 ++++++
 .../listings/ch09-error-handling/listing-09-10/output.txt | 15 +++++++++++++++
 .../ch09-error-handling/listing-09-10/src/main.rs         |  5 +++++
 4 files changed, 32 insertions(+)
 create mode 100644 src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.lock
 create mode 100644 src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.toml
 create mode 100644 src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt
 create mode 100644 src/doc/book/listings/ch09-error-handling/listing-09-10/src/main.rs

(limited to 'src/doc/book/listings/ch09-error-handling/listing-09-10')

diff --git a/src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.lock b/src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.lock
new file mode 100644
index 000000000..1fa96b797
--- /dev/null
+++ b/src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.toml b/src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.toml
new file mode 100644
index 000000000..c496db783
--- /dev/null
+++ b/src/doc/book/listings/ch09-error-handling/listing-09-10/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt b/src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt
new file mode 100644
index 000000000..26e4ff8cc
--- /dev/null
+++ b/src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt
@@ -0,0 +1,15 @@
+$ cargo run
+   Compiling error-handling v0.1.0 (file:///projects/error-handling)
+error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
+ --> src/main.rs:4:48
+  |
+3 | / fn main() {
+4 | |     let greeting_file = File::open("hello.txt")?;
+  | |                                                ^ cannot use the `?` operator in a function that returns `()`
+5 | | }
+  | |_- this function should return `Result` or `Option` to accept `?`
+  |
+  = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
+
+For more information about this error, try `rustc --explain E0277`.
+error: could not compile `error-handling` due to previous error
diff --git a/src/doc/book/listings/ch09-error-handling/listing-09-10/src/main.rs b/src/doc/book/listings/ch09-error-handling/listing-09-10/src/main.rs
new file mode 100644
index 000000000..38b005480
--- /dev/null
+++ b/src/doc/book/listings/ch09-error-handling/listing-09-10/src/main.rs
@@ -0,0 +1,5 @@
+use std::fs::File;
+
+fn main() {
+    let greeting_file = File::open("hello.txt")?;
+}
-- 
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