From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- .../ui/nll/issue-27282-move-ref-mut-into-guard.rs | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 tests/ui/nll/issue-27282-move-ref-mut-into-guard.rs (limited to 'tests/ui/nll/issue-27282-move-ref-mut-into-guard.rs') 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), + } +} -- cgit v1.2.3