Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 1008 insertions, 0 deletions

diff --git a/third_party/rust/replace_with/.cargo-checksum.json b/third_party/rust/replace_with/.cargo-checksum.json
new file mode 100644
index 0000000000..d06f44d085
--- /dev/null
+++ b/third_party/rust/replace_with/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"c84c56d27d6113b6b1c081aa2377801ed9dc223e63b32de8bfda3d645d601282","LICENSE-APACHE.txt":"8173d5c29b4f956d532781d2b86e4e30f83e6b7878dce18c919451d6ba707c90","LICENSE-MIT.txt":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"2b55e25c35977c9d196ca42883df76ad5c721ea3fa6ef45b9548cc0499d1392d","azure-pipelines.yml":"3c0c697b1584f8933af67fa08478b07e9ce1fb2a4f35ed2058fbbea4bfc45354","src/lib.rs":"476cf27a89c488e68de4813dfbe08a6a5ec765802ab911ca406d1e9a67592b66"},"package":"e3a8614ee435691de62bcffcf4a66d91b3594bf1428a5722e79103249a095690"}
\ No newline at end of file
diff --git a/third_party/rust/replace_with/Cargo.toml b/third_party/rust/replace_with/Cargo.toml
new file mode 100644
index 0000000000..2fbd957b37
--- /dev/null
+++ b/third_party/rust/replace_with/Cargo.toml
@@ -0,0 +1,38 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+edition = "2018"
+name = "replace_with"
+version = "0.1.7"
+authors = ["Alec Mocatta <alec@mocatta.net>"]
+description = "Temporarily take ownership of a value at a mutable location, and replace it with a new value based on the old one.\n"
+homepage = "https://github.com/alecmocatta/replace_with"
+documentation = "https://docs.rs/replace_with"
+readme = "README.md"
+keywords = ["mutability"]
+categories = ["rust-patterns"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/alecmocatta/replace_with"
+
+[features]
+default = ["std"]
+nightly = []
+panic_abort = []
+std = []
+[badges.azure-devops]
+build = "11"
+pipeline = "tests"
+project = "alecmocatta/replace_with"
+
+[badges.maintenance]
+status = "actively-developed"
diff --git a/third_party/rust/replace_with/LICENSE-APACHE.txt b/third_party/rust/replace_with/LICENSE-APACHE.txt
new file mode 100644
index 0000000000..11069edd79
--- /dev/null
+++ b/third_party/rust/replace_with/LICENSE-APACHE.txt
@@ -0,0 +1,201 @@
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diff --git a/third_party/rust/replace_with/LICENSE-MIT.txt b/third_party/rust/replace_with/LICENSE-MIT.txt
new file mode 100644
index 0000000000..31aa79387f
--- /dev/null
+++ b/third_party/rust/replace_with/LICENSE-MIT.txt
@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
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+limitation the rights to use, copy, modify, merge,
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+conditions:
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+The above copyright notice and this permission notice
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diff --git a/third_party/rust/replace_with/README.md b/third_party/rust/replace_with/README.md
new file mode 100644
index 0000000000..a04c2d98eb
--- /dev/null
+++ b/third_party/rust/replace_with/README.md
@@ -0,0 +1,117 @@
+# replace_with
+
+[![Crates.io](https://img.shields.io/crates/v/replace_with.svg?maxAge=86400)](https://crates.io/crates/replace_with)
+[![MIT / Apache 2.0 licensed](https://img.shields.io/crates/l/replace_with.svg?maxAge=2592000)](#License)
+[![Build Status](https://dev.azure.com/alecmocatta/replace_with/_apis/build/status/tests?branchName=master)](https://dev.azure.com/alecmocatta/replace_with/_build?definitionId=11)
+
+[📖 Docs](https://docs.rs/replace_with) | [💬 Chat](https://constellation.zulipchat.com/#narrow/stream/213236-subprojects)
+
+Temporarily take ownership of a value at a mutable location, and replace it with a new value based on the old one.
+
+This crate provides the function [`replace_with()`](https://docs.rs/replace_with/0.1/replace_with/fn.replace_with.html), which is like [`std::mem::replace()`](https://doc.rust-lang.org/std/mem/fn.replace.html) except it allows the replacement value to be mapped from the original value.
+
+See [RFC 1736](https://github.com/rust-lang/rfcs/pull/1736) for a lot of discussion as to its merits. It was never merged, and the desired ability to temporarily move out of `&mut T` doesn't exist yet, so this crate is my interim solution.
+
+It's very akin to [`take_mut`](https://github.com/Sgeo/take_mut), though uses `Drop` instead of [`std::panic::catch_unwind()`](https://doc.rust-lang.org/std/panic/fn.catch_unwind.html) to react to unwinding, which avoids the optimisation barrier of calling the `extern "C" __rust_maybe_catch_panic()`. As such it's up to ∞x faster. The API also attempts to make slightly more explicit the behavior on panic – [`replace_with()`](https://docs.rs/replace_with/0.1/replace_with/fn.replace_with.html) accepts two closures such that aborting in the "standard case" where the mapping closure (`FnOnce(T) -> T`) panics (as [`take_mut::take()`](https://docs.rs/take_mut/0.2.2/take_mut/fn.take.html) does) is avoided. If the second closure (`FnOnce() -> T`) panics, however, then it does indeed abort. The "abort on first panic" behaviour is available with [`replace_with_or_abort()`](https://docs.rs/replace_with/0.1/replace_with/fn.replace_with_or_abort.html).
+
+## Example
+
+Consider this motivating example:
+
+```rust
+enum States {
+    A(String),
+    B(String),
+}
+
+impl States {
+    fn poll(&mut self) {
+        // error[E0507]: cannot move out of borrowed content
+        *self = match *self {
+            //        ^^^^^ cannot move out of borrowed content
+            States::A(a) => States::B(a),
+            States::B(a) => States::A(a),
+        };
+    }
+}
+```
+
+Depending on context this can be quite tricky to work around. With this crate, however:
+
+```rust
+enum States {
+    A(String),
+    B(String),
+}
+
+impl States {
+    fn poll(&mut self) {
+        replace_with_or_abort(self, |self_| match self_ {
+            States::A(a) => States::B(a),
+            States::B(a) => States::A(a),
+        });
+    }
+}
+```
+
+Huzzah!
+
+## `no_std`
+
+To use `replace_with` with `no_std` you have to disable the `std` feature, which is active by default, by specifying your dependency to it like this:
+
+```toml
+# Cargo.toml
+
+[dependencies.replace_with]
+version = ...
+default-features = false
+features = []
+...
+```
+
+The [`replace_with()`](https://docs.rs/replace_with/0.1/replace_with/fn.replace_with.html) & [`replace_with_or_default()`](https://docs.rs/replace_with/0.1/replace_with/fn.replace_with_or_default.html) functions are available on stable Rust both, with and without `std`.
+
+The [`replace_with_or_abort()`](https://docs.rs/replace_with/0.1/replace_with/fn.replace_with_or_abort.html) function however by default makes use of [`std::process::abort()`](https://doc.rust-lang.org/std/process/fn.abort.html) which is not available with `no_std`.
+
+As such `replace_with` will by default call [`core::intrinsics::abort()`](https://doc.rust-lang.org/core/intrinsics/fn.abort.html) instead, which in turn requires nightly Rust.
+
+Not everything is lost for stable `no_std` though, `replace_with` has one more trick up its sleeve:
+
+### panic = "abort"
+
+If you define [`panic = abort`](https://doc.rust-lang.org/edition-guide/rust-2018/error-handling-and-panics/aborting-on-panic.html) in the `[profile]` section of your crate's `Cargo.toml` …
+
+```toml
+# Cargo.toml
+
+[profile.debug]
+panic = "abort"
+
+[profile.release]
+panic = "abort"
+```
+
+… and add the `"panic_abort"` feature to `replace_with` in the `dependencies` section of your crate's `Cargo.toml` …
+
+```toml
+# Cargo.toml
+
+[dependencies.replace_with]
+features = ["panic_abort"]
+...
+```
+
+… the `"panic_abort"` feature enables the [`replace_with_or_abort_unchecked()`](https://docs.rs/replace_with/0.1/replace_with/fn.replace_with_or_abort_unchecked.html) function becomes on stable Rust as an `unsafe` function, a simple wrapper around `ptr::write(dest, f(ptr::read(dest)));`.
+
+**Word of caution:** It is crucial to only ever use this function having defined `panic = "abort"`, or else bad things may happen. It's *up to you* to uphold this invariant!
+
+## License
+Licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE.txt](LICENSE-APACHE.txt) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT.txt](LICENSE-MIT.txt) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
diff --git a/third_party/rust/replace_with/azure-pipelines.yml b/third_party/rust/replace_with/azure-pipelines.yml
new file mode 100644
index 0000000000..133937a0d3
--- /dev/null
+++ b/third_party/rust/replace_with/azure-pipelines.yml
@@ -0,0 +1,32 @@
+trigger: ["master"]
+pr: ["master"]
+
+resources:
+  repositories:
+    - repository: templates
+      type: github
+      name: alecmocatta/azure-pipeline-templates
+      endpoint: alecmocatta
+
+jobs:
+- template: rust.yml@templates
+  parameters:
+    endpoint: alecmocatta
+    default:
+      rust_toolchain: 1.21.0 stable beta nightly
+      rust_lint_toolchain: nightly-2020-07-12
+      rust_flags: ''
+      rust_features: ';default;all'
+      rust_target_check: ''
+      rust_target_build: ''
+      rust_target_run: ''
+    matrix:
+      windows:
+        imageName: 'windows-latest'
+        rust_target_run: 'x86_64-pc-windows-msvc'
+      mac:
+        imageName: 'macos-latest'
+        rust_target_run: 'x86_64-apple-darwin'
+      linux:
+        imageName: 'ubuntu-latest'
+        rust_target_run: 'x86_64-unknown-linux-gnu'
diff --git a/third_party/rust/replace_with/src/lib.rs b/third_party/rust/replace_with/src/lib.rs
new file mode 100755
index 0000000000..05ab0fbf04
--- /dev/null
+++ b/third_party/rust/replace_with/src/lib.rs
@@ -0,0 +1,596 @@
+//! Temporarily take ownership of a value at a mutable location, and replace it with a new value
+//! based on the old one.
+//!
+//! <p style="font-family: 'Fira Sans',sans-serif;padding:0.3em 0"><strong>
+//! <a href="https://crates.io/crates/replace_with">📦&nbsp;&nbsp;Crates.io</a>&nbsp;&nbsp;│&nbsp;&nbsp;<a href="https://github.com/alecmocatta/replace_with">📑&nbsp;&nbsp;GitHub</a>&nbsp;&nbsp;│&nbsp;&nbsp;<a href="https://constellation.zulipchat.com/#narrow/stream/213236-subprojects">💬&nbsp;&nbsp;Chat</a>
+//! </strong></p>
+//!
+//! This crate provides the function [`replace_with()`], which is like [`std::mem::replace()`]
+//! except it allows the replacement value to be mapped from the original value.
+//!
+//! See [RFC 1736](https://github.com/rust-lang/rfcs/pull/1736) for a lot of discussion as to its
+//! merits. It was never merged, and the desired ability to temporarily move out of `&mut T` doesn't
+//! exist yet, so this crate is my interim solution.
+//!
+//! It's very akin to [`take_mut`](https://github.com/Sgeo/take_mut), though uses `Drop` instead of
+//! [`std::panic::catch_unwind()`] to react to unwinding, which avoids the optimisation barrier of
+//! calling the `extern "C" __rust_maybe_catch_panic()`. As such it's up to ∞x faster. The API also
+//! attempts to make slightly more explicit the behavior on panic – [`replace_with()`] accepts two
+//! closures such that aborting in the "standard case" where the mapping closure (`FnOnce(T) -> T`)
+//! panics (as [`take_mut::take()`](https://docs.rs/take_mut/0.2.2/take_mut/fn.take.html) does) is
+//! avoided. If the second closure (`FnOnce() -> T`) panics, however, then it does indeed abort.
+//! The "abort on first panic" behaviour is available with [`replace_with_or_abort()`].
+//!
+//! # Example
+//!
+//! Consider this motivating example:
+//!
+//! ```compile_fail
+//! # use replace_with::*;
+//! enum States {
+//!     A(String),
+//!     B(String),
+//! }
+//!
+//! impl States {
+//!     fn poll(&mut self) {
+//!         // error[E0507]: cannot move out of borrowed content
+//!         *self = match *self {
+//!         //            ^^^^^ cannot move out of borrowed content
+//!             States::A(a) => States::B(a),
+//!             States::B(a) => States::A(a),
+//!         };
+//!     }
+//! }
+//! ```
+//!
+//! Depending on context this can be quite tricky to work around. With this crate, however:
+//!
+//! ```
+//! # use replace_with::*;
+//! enum States {
+//!     A(String),
+//!     B(String),
+//! }
+//!
+//! # #[cfg(any(feature = "std", feature = "nightly"))]
+//! impl States {
+//!     fn poll(&mut self) {
+//!         replace_with_or_abort(self, |self_| match self_ {
+//!             States::A(a) => States::B(a),
+//!             States::B(a) => States::A(a),
+//!         });
+//!     }
+//! }
+//! ```
+//!
+//! Huzzah!
+
+#![cfg_attr(not(feature = "std"), no_std)]
+#![cfg_attr(
+	all(not(feature = "std"), feature = "nightly"),
+	feature(core_intrinsics)
+)]
+#![doc(html_root_url = "https://docs.rs/replace_with/0.1.7")]
+#![warn(
+	missing_copy_implementations,
+	missing_debug_implementations,
+	missing_docs,
+	trivial_casts,
+	trivial_numeric_casts,
+	unused_import_braces,
+	unused_qualifications,
+	unused_results,
+	// clippy::pedantic
+)]
+// #![allow(clippy::inline_always)]
+
+#[cfg(not(feature = "std"))]
+use core as std;
+
+use std::{mem, ptr};
+
+struct OnDrop<F: FnOnce()>(mem::ManuallyDrop<F>);
+impl<F: FnOnce()> Drop for OnDrop<F> {
+	#[inline(always)]
+	fn drop(&mut self) {
+		(unsafe { ptr::read(&*self.0) })();
+	}
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub fn on_unwind<F: FnOnce() -> T, T, P: FnOnce()>(f: F, p: P) -> T {
+	let x = OnDrop(mem::ManuallyDrop::new(p));
+	let t = f();
+	let mut x = mem::ManuallyDrop::new(x);
+	unsafe { mem::ManuallyDrop::drop(&mut x.0) };
+	t
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub fn on_return_or_unwind<F: FnOnce() -> T, T, P: FnOnce()>(f: F, p: P) -> T {
+	let _x = OnDrop(mem::ManuallyDrop::new(p));
+	f()
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, `default` will be called to
+/// provide a replacement value. `default` should not panic – doing so will constitute a double
+/// panic and will most likely abort the process.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+/// enum States {
+///     A(String),
+///     B(String),
+/// }
+///
+/// impl States {
+///     fn poll(&mut self) {
+///         replace_with(
+///             self,
+///             || States::A(String::new()),
+///             |self_| match self_ {
+///                 States::A(a) => States::B(a),
+///                 States::B(a) => States::A(a),
+///             },
+///         );
+///     }
+/// }
+/// ```
+#[inline]
+pub fn replace_with<T, D: FnOnce() -> T, F: FnOnce(T) -> T>(dest: &mut T, default: D, f: F) {
+	unsafe {
+		let old = ptr::read(dest);
+		let new = on_unwind(move || f(old), || ptr::write(dest, default()));
+		ptr::write(dest, new);
+	}
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one. Replaces with [`Default::default()`] on panic.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, `T::default()` will be called to
+/// provide a replacement value. `T::default()` should not panic – doing so will constitute a double
+/// panic and will most likely abort the process.
+///
+/// Equivalent to `replace_with(dest, T::default, f)`.
+///
+/// Differs from `*dest = mem::replace(dest, Default::default())` in that `Default::default()` will
+/// only be called on panic.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+/// enum States {
+///     A(String),
+///     B(String),
+/// }
+///
+/// impl Default for States {
+///     fn default() -> Self {
+///         States::A(String::new())
+///     }
+/// }
+///
+/// impl States {
+///     fn poll(&mut self) {
+///         replace_with_or_default(self, |self_| match self_ {
+///             States::A(a) => States::B(a),
+///             States::B(a) => States::A(a),
+///         });
+///     }
+/// }
+/// ```
+#[inline]
+pub fn replace_with_or_default<T: Default, F: FnOnce(T) -> T>(dest: &mut T, f: F) {
+	replace_with(dest, T::default, f);
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one. Aborts on panic.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, the process will **abort** to
+/// avoid returning control while `dest` is in a potentially invalid state.
+///
+/// If this behaviour is undesirable, use [`replace_with`] or [`replace_with_or_default`].
+///
+/// Equivalent to `replace_with(dest, || process::abort(), f)`.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+/// enum States {
+///     A(String),
+///     B(String),
+/// }
+///
+/// # #[cfg(any(feature = "std", feature = "nightly"))]
+/// impl States {
+///     fn poll(&mut self) {
+///         replace_with_or_abort(self, |self_| match self_ {
+///             States::A(a) => States::B(a),
+///             States::B(a) => States::A(a),
+///         });
+///     }
+/// }
+/// ```
+#[inline]
+#[cfg(feature = "std")]
+pub fn replace_with_or_abort<T, F: FnOnce(T) -> T>(dest: &mut T, f: F) {
+	replace_with(dest, || std::process::abort(), f);
+}
+
+#[inline]
+#[cfg(all(not(feature = "std"), feature = "nightly"))]
+pub fn replace_with_or_abort<T, F: FnOnce(T) -> T>(dest: &mut T, f: F) {
+	replace_with(dest, || unsafe { std::intrinsics::abort() }, f);
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one. Aborts on panic.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, the process will **abort** to
+/// avoid returning control while `dest` is in a potentially invalid state.
+///
+/// Unlike for `replace_with_or_abort()` users of `replace_with_or_abort_unchecked()` are expected
+/// to have `features = ["panic_abort", …]` defined in `Cargo.toml`
+/// and `panic = "abort"` defined in their profile for it to behave semantically correct:
+///
+/// ```toml
+/// # Cargo.toml
+///
+/// [profile.debug]
+/// panic = "abort"
+///
+/// [profile.release]
+/// panic = "abort"
+/// ```
+///
+/// # Safety
+///
+/// It is crucial to only ever use this function having defined `panic = "abort"`, or else bad
+/// things may happen. It's *up to you* to uphold this invariant!
+///
+/// If this behaviour is undesirable, use [`replace_with`] or [`replace_with_or_default`].
+///
+/// Equivalent to `replace_with(dest, || process::abort(), f)`.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+/// enum States {
+///     A(String),
+///     B(String),
+/// }
+///
+/// impl States {
+///     fn poll(&mut self) {
+///         unsafe {
+///             replace_with_or_abort_unchecked(self, |self_| match self_ {
+///                 States::A(a) => States::B(a),
+///                 States::B(a) => States::A(a),
+///             });
+///         }
+///     }
+/// }
+/// ```
+///
+#[inline]
+#[cfg(feature = "panic_abort")]
+pub unsafe fn replace_with_or_abort_unchecked<T, F: FnOnce(T) -> T>(dest: &mut T, f: F) {
+	ptr::write(dest, f(ptr::read(dest)));
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one. Lets the closure return a custom value as well.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// This is effectively the same function as [`replace_with`], but it lets the closure return a
+/// custom value as well.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, `default` will be called to
+/// provide a replacement value. `default` should not panic – doing so will constitute a double
+/// panic and will most likely abort the process.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+///
+/// fn take<T>(option: &mut Option<T>) -> Option<T> {
+///     replace_with_and_return(option, || None, |option| (option, None))
+/// }
+///
+/// let mut opt = Some(3);
+/// assert_eq!(take(&mut opt), Some(3));
+/// assert_eq!(take(&mut opt), None);
+/// ```
+#[inline]
+pub fn replace_with_and_return<T, U, D: FnOnce() -> T, F: FnOnce(T) -> (U, T)>(
+	dest: &mut T, default: D, f: F,
+) -> U {
+	unsafe {
+		let old = ptr::read(dest);
+		let (res, new) = on_unwind(move || f(old), || ptr::write(dest, default()));
+		ptr::write(dest, new);
+		res
+	}
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one. Replaces with [`Default::default()`] on panic.
+/// Lets the closure return a custom value as well.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// This is effectively the same function as [`replace_with_or_default`], but it lets the closure
+/// return a custom value as well.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, `T::default()` will be called to
+/// provide a replacement value. `T::default()` should not panic – doing so will constitute a double
+/// panic and will most likely abort the process.
+///
+/// Equivalent to `replace_with_and_return(dest, T::default, f)`.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+///
+/// fn take<T>(option: &mut Option<T>) -> Option<T> {
+///     replace_with_or_default_and_return(option, |option| (option, None))
+/// }
+/// ```
+#[inline]
+pub fn replace_with_or_default_and_return<T: Default, U, F: FnOnce(T) -> (U, T)>(
+	dest: &mut T, f: F,
+) -> U {
+	replace_with_and_return(dest, T::default, f)
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one. Aborts on panic. Lets the closure return a custom value as well.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// This is effectively the same function as [`replace_with_or_abort`], but it lets the closure
+/// return a custom value as well.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, the process will **abort** to
+/// avoid returning control while `dest` is in a potentially invalid state.
+///
+/// If this behaviour is undesirable, use [`replace_with_and_return`] or
+/// [`replace_with_or_default_and_return`] instead.
+///
+/// Equivalent to `replace_with_and_return(dest, || process::abort(), f)`.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+///
+/// fn take<T>(option: &mut Option<T>) -> Option<T> {
+///     replace_with_or_abort_and_return(option, |option| (option, None))
+/// }
+/// ```
+#[inline]
+#[cfg(feature = "std")]
+pub fn replace_with_or_abort_and_return<T, U, F: FnOnce(T) -> (U, T)>(dest: &mut T, f: F) -> U {
+	replace_with_and_return(dest, || std::process::abort(), f)
+}
+
+#[inline]
+#[cfg(all(not(feature = "std"), feature = "nightly"))]
+pub fn replace_with_or_abort_and_return<T, U, F: FnOnce(T) -> (U, T)>(dest: &mut T, f: F) -> U {
+	replace_with_and_return(dest, || unsafe { std::intrinsics::abort() }, f)
+}
+
+/// Temporarily takes ownership of a value at a mutable location, and replace it with a new value
+/// based on the old one. Aborts on panic. Lets the closure return a custom value as well.
+///
+/// We move out of the reference temporarily, to apply a closure `f`, returning a new value, which
+/// is then placed at the original value's location.
+///
+/// This is effectively the same function as [`replace_with_or_abort_unchecked`], but it lets the
+/// closure return a custom value as well.
+///
+/// # An important note
+///
+/// On panic (or to be more precise, unwinding) of the closure `f`, the process will **abort** to
+/// avoid returning control while `dest` is in a potentially invalid state.
+///
+/// Unlike for `replace_with_or_abort()` users of `replace_with_or_abort_unchecked()` are expected
+/// to have `features = ["panic_abort", …]` defined in `Cargo.toml`
+/// and `panic = "abort"` defined in their profile for it to behave semantically correct:
+///
+/// ```toml
+/// # Cargo.toml
+///
+/// [profile.debug]
+/// panic = "abort"
+///
+/// [profile.release]
+/// panic = "abort"
+/// ```
+///
+/// # Safety
+///
+/// It is crucial to only ever use this function having defined `panic = "abort"`, or else bad
+/// things may happen. It's *up to you* to uphold this invariant!
+///
+/// If this behaviour is undesirable, use [`replace_with_and_return`] or
+/// [`replace_with_or_default_and_return`].
+///
+/// Equivalent to `replace_with_and_return(dest, || process::abort(), f)`.
+///
+/// # Example
+///
+/// ```
+/// # use replace_with::*;
+///
+/// unsafe fn take<T>(option: &mut Option<T>) -> Option<T> {
+///     replace_with_or_abort_and_return_unchecked(option, |option| (option, None))
+/// }
+/// ```
+#[inline]
+#[cfg(feature = "std")]
+#[cfg(feature = "panic_abort")]
+pub unsafe fn replace_with_or_abort_and_return_unchecked<T, U, F: FnOnce(T) -> (U, T)>(
+	dest: &mut T, f: F,
+) -> U {
+	let (res, new) = f(ptr::read(dest));
+	ptr::write(dest, new);
+	res
+}
+
+#[cfg(test)]
+mod test {
+	// These functions copied from https://github.com/Sgeo/take_mut/blob/1bd70d842c6febcd16ec1fe3a954a84032b89f52/src/lib.rs#L102-L147
+
+	// Copyright (c) 2016 Sgeo
+
+	// Permission is hereby granted, free of charge, to any person obtaining a copy
+	// of this software and associated documentation files (the "Software"), to deal
+	// in the Software without restriction, including without limitation the rights
+	// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+	// copies of the Software, and to permit persons to whom the Software is
+	// furnished to do so, subject to the following conditions:
+
+	// The above copyright notice and this permission notice shall be included in all
+	// copies or substantial portions of the Software.
+
+	// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+	// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+	// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+	// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+	// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+	// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+	// SOFTWARE.
+
+	use super::*;
+
+	#[test]
+	fn it_works_recover() {
+		#[derive(PartialEq, Eq, Debug)]
+		enum Foo {
+			A,
+			B,
+		};
+		impl Drop for Foo {
+			#[cfg(feature = "std")]
+			fn drop(&mut self) {
+				match *self {
+					Foo::A => println!("Foo::A dropped"),
+					Foo::B => println!("Foo::B dropped"),
+				}
+			}
+
+			#[cfg(not(feature = "std"))]
+			fn drop(&mut self) {
+				match *self {
+					Foo::A | Foo::B => (),
+				}
+			}
+		}
+		let mut quax = Foo::A;
+		replace_with(
+			&mut quax,
+			|| Foo::A,
+			|f| {
+				drop(f);
+				Foo::B
+			},
+		);
+		assert_eq!(&quax, &Foo::B);
+
+		let n = replace_with_and_return(
+			&mut quax,
+			|| Foo::B,
+			|f| {
+				drop(f);
+				(3, Foo::A)
+			},
+		);
+		assert_eq!(n, 3);
+		assert_eq!(&quax, &Foo::A);
+	}
+
+	#[cfg(all(feature = "std", not(miri)))] // https://github.com/rust-lang/miri/issues/658
+	#[test]
+	fn it_works_recover_panic() {
+		use std::panic;
+
+		#[derive(PartialEq, Eq, Debug)]
+		enum Foo {
+			A,
+			B,
+			C,
+		};
+		impl Drop for Foo {
+			fn drop(&mut self) {
+				match *self {
+					Foo::A => println!("Foo::A dropped"),
+					Foo::B => println!("Foo::B dropped"),
+					Foo::C => println!("Foo::C dropped"),
+				}
+			}
+		}
+		let mut quax = Foo::A;
+
+		let res = panic::catch_unwind(panic::AssertUnwindSafe(|| {
+			replace_with(
+				&mut quax,
+				|| Foo::C,
+				|f| {
+					drop(f);
+					panic!("panic");
+					#[allow(unreachable_code)]
+					Foo::B
+				},
+			);
+		}));
+
+		assert!(res.is_err());
+		assert_eq!(&quax, &Foo::C);
+	}
+}