diff options
Diffstat (limited to 'src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference')
4 files changed, 37 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.lock b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.lock new file mode 100644 index 000000000..2aa4918e5 --- /dev/null +++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/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-14-dangling-reference/Cargo.toml b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.toml new file mode 100644 index 000000000..e8847526d --- /dev/null +++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/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-14-dangling-reference/output.txt b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt new file mode 100644 index 000000000..fddca683b --- /dev/null +++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt @@ -0,0 +1,16 @@ +$ cargo run + Compiling ownership v0.1.0 (file:///projects/ownership) +error[E0106]: missing lifetime specifier + --> src/main.rs:5:16 + | +5 | fn dangle() -> &String { + | ^ expected named lifetime parameter + | + = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from +help: consider using the `'static` lifetime + | +5 | fn dangle() -> &'static String { + | ~~~~~~~~ + +For more information about this error, try `rustc --explain E0106`. +error: could not compile `ownership` due to previous error diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/src/main.rs b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/src/main.rs new file mode 100644 index 000000000..b10269781 --- /dev/null +++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/src/main.rs @@ -0,0 +1,9 @@ +fn main() { + let reference_to_nothing = dangle(); +} + +fn dangle() -> &String { + let s = String::from("hello"); + + &s +} |