1 files changed, 48 insertions, 0 deletions
diff --git a/vendor/proptest/src/arbitrary/_core/cell.rs b/vendor/proptest/src/arbitrary/_core/cell.rs
new file mode 100644
index 000000000..c10148fb9
--- /dev/null
+++ b/vendor/proptest/src/arbitrary/_core/cell.rs
@@ -0,0 +1,48 @@
+//-
+// Copyright 2017, 2018 The proptest developers
+//
+// 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.
+
+//! Arbitrary implementations for `std::cell`.
+
+use core::cell::{BorrowError, BorrowMutError, Cell, RefCell, UnsafeCell};
+
+wrap_from!([Copy] Cell);
+wrap_from!(RefCell);
+wrap_from!(UnsafeCell);
+
+lazy_just!(BorrowError, || {
+    // False positive:
+    #[cfg_attr(feature = "cargo-clippy", allow(let_and_return))]
+    {
+        let _rc = RefCell::new(());
+        let _bm = _rc.borrow_mut();
+        let _tb = _rc.try_borrow();
+        let ret = _rc.try_borrow().expect_err("reborrowed RefCell");
+        ret
+    }
+});
+lazy_just!(BorrowMutError, || {
+    // False positive:
+    #[cfg_attr(feature = "cargo-clippy", allow(let_and_return))]
+    {
+        let _rc = RefCell::new(());
+        let _bm = _rc.borrow_mut();
+        let _tb = _rc.try_borrow();
+        let ret = _rc.try_borrow_mut().expect_err("reborrowed RefCell");
+        ret
+    }
+});
+
+#[cfg(test)]
+mod test {
+    no_panic_test!(
+        cell => Cell<u8>,
+        ref_cell => RefCell<u8>,
+        unsafe_cell => UnsafeCell<u8>
+    );
+}