diff options
Diffstat (limited to 'src/doc/book/listings/ch19-advanced-features/listing-19-10')
3 files changed, 27 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch19-advanced-features/listing-19-10/Cargo.lock b/src/doc/book/listings/ch19-advanced-features/listing-19-10/Cargo.lock new file mode 100644 index 000000000..497817bf2 --- /dev/null +++ b/src/doc/book/listings/ch19-advanced-features/listing-19-10/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "unsafe-example" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch19-advanced-features/listing-19-10/Cargo.toml b/src/doc/book/listings/ch19-advanced-features/listing-19-10/Cargo.toml new file mode 100644 index 000000000..3e8a29201 --- /dev/null +++ b/src/doc/book/listings/ch19-advanced-features/listing-19-10/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "unsafe-example" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch19-advanced-features/listing-19-10/src/main.rs b/src/doc/book/listings/ch19-advanced-features/listing-19-10/src/main.rs new file mode 100644 index 000000000..e8dab68e0 --- /dev/null +++ b/src/doc/book/listings/ch19-advanced-features/listing-19-10/src/main.rs @@ -0,0 +1,15 @@ +static mut COUNTER: u32 = 0; + +fn add_to_count(inc: u32) { + unsafe { + COUNTER += inc; + } +} + +fn main() { + add_to_count(3); + + unsafe { + println!("COUNTER: {}", COUNTER); + } +} |