use `pat_ty_adjusted` from `expr_use_visitor` to type of arguments

3 files changed, 42 insertions, 0 deletions

diff --git a/src/test/ui/borrowck/issue-51415.nll.stderr b/src/test/ui/borrowck/issue-51415.nll.stderr
new file mode 100644
index 00000000000..79454b63526
--- /dev/null
+++ b/src/test/ui/borrowck/issue-51415.nll.stderr
@@ -0,0 +1,9 @@
+error[E0507]: cannot move out of borrowed content
+  --> $DIR/issue-51415.rs:16:47
+   |
+LL |     let opt = a.iter().enumerate().find(|(_, &s)| {
+   |                                               ^ cannot move out of borrowed content
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0507`.
diff --git a/src/test/ui/borrowck/issue-51415.rs b/src/test/ui/borrowck/issue-51415.rs
new file mode 100644
index 00000000000..9067a50a847
--- /dev/null
+++ b/src/test/ui/borrowck/issue-51415.rs
@@ -0,0 +1,21 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Regression test for #51415: match default bindings were failing to
+// see the "move out" implied by `&s` below.
+
+fn main() {
+    let a = vec![String::from("a")];
+    let opt = a.iter().enumerate().find(|(_, &s)| {
+        //~^ ERROR cannot move out
+        *s == String::from("d")
+    }).map(|(i, _)| i);
+    println!("{:?}", opt);
+}
diff --git a/src/test/ui/borrowck/issue-51415.stderr b/src/test/ui/borrowck/issue-51415.stderr
new file mode 100644
index 00000000000..b4b0bc75943
--- /dev/null
+++ b/src/test/ui/borrowck/issue-51415.stderr
@@ -0,0 +1,12 @@
+error[E0507]: cannot move out of borrowed content
+  --> $DIR/issue-51415.rs:16:46
+   |
+LL |     let opt = a.iter().enumerate().find(|(_, &s)| {
+   |                                              ^-
+   |                                              ||
+   |                                              |hint: to prevent move, use `ref s` or `ref mut s`
+   |                                              cannot move out of borrowed content
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0507`.