diff options
Diffstat (limited to 'tests/ui/nll/issue-27282-move-ref-mut-into-guard.rs')
-rw-r--r-- | tests/ui/nll/issue-27282-move-ref-mut-into-guard.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/nll/issue-27282-move-ref-mut-into-guard.rs b/tests/ui/nll/issue-27282-move-ref-mut-into-guard.rs new file mode 100644 index 000000000..833ca8afd --- /dev/null +++ b/tests/ui/nll/issue-27282-move-ref-mut-into-guard.rs @@ -0,0 +1,23 @@ +// Issue 27282: Example 1: This sidesteps the AST checks disallowing +// mutable borrows in match guards by hiding the mutable borrow in a +// guard behind a move (of the ref mut pattern id) within a closure. + +#![feature(if_let_guard)] + +fn main() { + match Some(&4) { + None => {}, + ref mut foo + if { (|| { let bar = foo; bar.take() })(); false } => {}, + //~^ ERROR cannot move out of `foo` in pattern guard [E0507] + Some(s) => std::process::exit(*s), + } + + match Some(&4) { + None => {}, + ref mut foo + if let Some(()) = { (|| { let bar = foo; bar.take() })(); None } => {}, + //~^ ERROR cannot move out of `foo` in pattern guard [E0507] + Some(s) => std::process::exit(*s), + } +} |