42 lines
793 B
Rust
42 lines
793 B
Rust
// run-pass
|
|
// Tests that two closures can simultaneously have immutable
|
|
// access to the variable, whether that immutable access be used
|
|
// for direct reads or for taking immutable ref. Also check
|
|
// that the main function can read the variable too while
|
|
// the closures are in scope. Issue #6801.
|
|
|
|
|
|
fn a() -> i32 {
|
|
let mut x = 3;
|
|
x += 1;
|
|
let c1 = || x * 4;
|
|
let c2 = || x * 5;
|
|
c1() * c2() * x
|
|
}
|
|
|
|
fn get(x: &i32) -> i32 {
|
|
*x * 4
|
|
}
|
|
|
|
fn b() -> i32 {
|
|
let mut x = 3;
|
|
x += 1;
|
|
let c1 = || get(&x);
|
|
let c2 = || get(&x);
|
|
c1() * c2() * x
|
|
}
|
|
|
|
fn c() -> i32 {
|
|
let mut x = 3;
|
|
x += 1;
|
|
let c1 = || x * 5;
|
|
let c2 = || get(&x);
|
|
c1() * c2() * x
|
|
}
|
|
|
|
pub fn main() {
|
|
assert_eq!(a(), 1280);
|
|
assert_eq!(b(), 1024);
|
|
assert_eq!(c(), 1280);
|
|
}
|