diff options
Diffstat (limited to 'src/test/ui/borrowck/borrowck-slice-pattern-element-loan-rpass.rs')
-rw-r--r-- | src/test/ui/borrowck/borrowck-slice-pattern-element-loan-rpass.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-slice-pattern-element-loan-rpass.rs b/src/test/ui/borrowck/borrowck-slice-pattern-element-loan-rpass.rs new file mode 100644 index 000000000..4367596c6 --- /dev/null +++ b/src/test/ui/borrowck/borrowck-slice-pattern-element-loan-rpass.rs @@ -0,0 +1,21 @@ +// run-pass + +fn mut_head_tail<'a, A>(v: &'a mut [A]) -> Option<(&'a mut A, &'a mut [A])> { + match *v { + [ref mut head, ref mut tail @ ..] => { + Some((head, tail)) + } + [] => None + } +} + +fn main() { + let mut v = [1,2,3,4]; + match mut_head_tail(&mut v) { + None => {}, + Some((h,t)) => { + *h = 1000; + t.reverse(); + } + } +} |