mirror of https://github.com/rust-lang/rust
42 lines
985 B
Rust
42 lines
985 B
Rust
pub struct CrateId {
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local_path: String,
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junk: String,
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}
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impl CrateId {
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fn new(s: &str) -> CrateId {
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CrateId { local_path: s.to_string(), junk: "wutevs".to_string() }
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}
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}
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pub fn remove_package_from_database() {
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let mut lines_to_use: Vec<&CrateId> = Vec::new();
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//~^ NOTE `lines_to_use` declared here, outside of the closure body
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let push_id = |installed_id: &CrateId| {
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//~^ NOTE `installed_id` is a reference that is only valid in the closure body
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lines_to_use.push(installed_id);
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//~^ ERROR borrowed data escapes outside of closure
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//~| NOTE `installed_id` escapes the closure body here
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};
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list_database(push_id);
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for l in &lines_to_use {
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println!("{}", l.local_path);
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}
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}
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pub fn list_database<F>(mut f: F)
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where
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F: FnMut(&CrateId),
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{
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let stuff = ["foo", "bar"];
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for l in &stuff {
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f(&CrateId::new(*l));
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}
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}
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pub fn main() {
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remove_package_from_database();
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}
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