Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

7 files changed, 576 insertions, 0 deletions

diff --git a/vendor/cov-mark/.cargo-checksum.json b/vendor/cov-mark/.cargo-checksum.json
new file mode 100644
index 000000000..594f68f25
--- /dev/null
+++ b/vendor/cov-mark/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"1d8ced7dc9a974e1c66fade34419cf217bdf9a6139d646faaf3b8f51b736958c","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"6df4d461276c99625d9cb418f956e4b1ecec895a82876faf10dc24b804a5d8fd","src/lib.rs":"686d9d91a2a77ad0a19ede20e898dc46300b462d9db0ef9e26f7981f1334e5ac","tests/smoke.rs":"602921279759a874a50ec46bd13cea11738f98202380ebd6555d531e517537e0"},"package":"0d48d8f76bd9331f19fe2aaf3821a9f9fb32c3963e1e3d6ce82a8c09cef7444a"}
\ No newline at end of file
diff --git a/vendor/cov-mark/Cargo.toml b/vendor/cov-mark/Cargo.toml
new file mode 100644
index 000000000..d3e7812ca
--- /dev/null
+++ b/vendor/cov-mark/Cargo.toml
@@ -0,0 +1,31 @@
+# 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 = "cov-mark"
+version = "2.0.0-pre.1"
+authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>", "Simonas Kazlauskas <cov-mark@kazlauskas.me>"]
+exclude = [".github/", "bors.toml", "rustfmt.toml"]
+description = "Manual coverage marks."
+documentation = "https://docs.rs/cov-mark"
+keywords = ["coverage", "test"]
+categories = ["development-tools"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/matklad/cov-mark"
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "nightly_docs"]
+
+[features]
+default = ["enable"]
+enable = []
diff --git a/vendor/cov-mark/LICENSE-APACHE b/vendor/cov-mark/LICENSE-APACHE
new file mode 100644
index 000000000..16fe87b06
--- /dev/null
+++ b/vendor/cov-mark/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
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diff --git a/vendor/cov-mark/LICENSE-MIT b/vendor/cov-mark/LICENSE-MIT
new file mode 100644
index 000000000..31aa79387
--- /dev/null
+++ b/vendor/cov-mark/LICENSE-MIT
@@ -0,0 +1,23 @@
+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
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+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.
diff --git a/vendor/cov-mark/README.md b/vendor/cov-mark/README.md
new file mode 100644
index 000000000..81c1fcec0
--- /dev/null
+++ b/vendor/cov-mark/README.md
@@ -0,0 +1,21 @@
+# cov-mark
+
+Verify that your tests exercise the conditions you think they are exercising
+
+```rust
+fn safe_divide(dividend: u32, divisor: u32) -> u32 {
+    if divisor == 0 {
+        cov_mark::hit!(save_divide_zero);
+        return 0;
+    }
+    dividend / divisor
+}
+
+#[test]
+fn test_safe_divide_by_zero() {
+    cov_mark::check!(save_divide_zero);
+    assert_eq!(safe_divide(92, 0), 0);
+}
+```
+
+See [the docs](https://docs.rs/cov-mark) for details
diff --git a/vendor/cov-mark/src/lib.rs b/vendor/cov-mark/src/lib.rs
new file mode 100644
index 000000000..a2ee0cad1
--- /dev/null
+++ b/vendor/cov-mark/src/lib.rs
@@ -0,0 +1,272 @@
+//! # cov-mark
+//!
+//! This library at its core provides two macros, [`hit!`] and [`check!`],
+//! which can be used to verify that a certain test exercises a certain code
+//! path.
+//!
+//! Here's a short example:
+//!
+//! ```
+//! fn parse_date(s: &str) -> Option<(u32, u32, u32)> {
+//!     if 10 != s.len() {
+//!         // By using `cov_mark::hit!`
+//!         // we signal which test exercises this code.
+//!         cov_mark::hit!(short_date);
+//!         return None;
+//!     }
+//!
+//!     if "-" != &s[4..5] || "-" != &s[7..8] {
+//!         cov_mark::hit!(bad_dashes);
+//!         return None;
+//!     }
+//!     // ...
+//! #    unimplemented!()
+//! }
+//!
+//! #[test]
+//! fn test_parse_date() {
+//!     {
+//!         // `cov_mark::check!` creates a guard object
+//!         // that verifies that by the end of the scope we've
+//!         // executed the corresponding `cov_mark::hit`.
+//!         cov_mark::check!(short_date);
+//!         assert!(parse_date("92").is_none());
+//!     }
+//!
+//! //  This will fail. Although the test looks like
+//! //  it exercises the second condition, it does not.
+//! //  The call to `covers!` call catches this bug in the test.
+//! //  {
+//! //      cov_mark::check!(bad_dashes);;
+//! //      assert!(parse_date("27.2.2013").is_none());
+//! //  }
+//!
+//!     {
+//!         cov_mark::check!(bad_dashes);
+//!         assert!(parse_date("27.02.2013").is_none());
+//!     }
+//! }
+//!
+//! # fn main() {}
+//! ```
+//!
+//! Here's why coverage marks are useful:
+//!
+//! * Verifying that something doesn't happen for the *right* reason.
+//! * Finding the test that exercises the code (grep for `check!(mark_name)`).
+//! * Finding the code that the test is supposed to check (grep for `hit!(mark_name)`).
+//! * Making sure that code and tests don't diverge during refactorings.
+//! * (If used pervasively) Verifying that each branch has a corresponding test.
+//!
+//! # Limitations
+//!
+//! * In the presence of threads, [`check!`] may falsely pass, if the
+//!   mark is hit by an unrelated thread, unless the `thread-local` feature is
+//!   enabled.
+//! * Names of marks must be globally unique.
+//! * [`check!`] can't be used in integration tests.
+//!
+//! # Implementation Details
+//!
+//! Each coverage mark is an `AtomicUsize` counter. [`hit!`] increments
+//! this counter, [`check!`] returns a guard object which checks that
+//! the mark was incremented. When the `thread-local` feature is enabled,
+//! each counter is stored as a thread-local, allowing for more accurate
+//! counting.
+//!
+//! Counters are declared using `#[no_mangle]` attribute, so that [`hit!`] and
+//! [`check!`] both can find the mark without the need to declare it in a common
+//! module. Aren't the linkers ~~horrible~~ wonderful?
+//!
+//! # Safety
+//!
+//! Technically, the [`hit!`] macro in this crate is unsound: it uses `extern "C"
+//! #[no_mangle]` symbol, which *could* clash with an existing symbol and cause
+//! UB. For example, `cov_mark::hit!(main)` may segfault. That said:
+//!
+//! * If there's no existing symbol, the result is a linker error.
+//! * If there exists corresponding `cov_mark::check!`, the result is a linker
+//!   error.
+//! * Code inside `cov_mark::hit!` is hidden under `#[cfg(test)]`.
+//!
+//! It is believed that it is practically impossible to cause UB by accident
+//! when using this crate. For this reason, the `hit` macro hides unsafety
+//! inside.
+
+#![cfg_attr(nightly_docs, deny(broken_intra_doc_links))]
+#![cfg_attr(nightly_docs, feature(doc_cfg))]
+
+/// Hit a mark with a specified name.
+///
+/// # Example
+///
+/// ```
+/// fn safe_divide(dividend: u32, divisor: u32) -> u32 {
+///     if divisor == 0 {
+///         cov_mark::hit!(save_divide_zero);
+///         return 0;
+///     }
+///     dividend / divisor
+/// }
+/// ```
+#[macro_export]
+macro_rules! hit {
+    ($ident:ident) => {
+        $crate::__rt::hit(stringify!($ident))
+    };
+}
+
+/// Checks that a specified mark was hit.
+///
+/// # Example
+///
+/// ```
+/// #[test]
+/// fn test_safe_divide_by_zero() {
+///     cov_mark::check!(save_divide_zero);
+///     assert_eq!(safe_divide(92, 0), 0);
+/// }
+/// # fn safe_divide(dividend: u32, divisor: u32) -> u32 {
+/// #     if divisor == 0 {
+/// #         cov_mark::hit!(save_divide_zero);
+/// #         return 0;
+/// #     }
+/// #     dividend / divisor
+/// # }
+/// ```
+#[macro_export]
+macro_rules! check {
+    ($ident:ident) => {
+        let _guard = $crate::__rt::Guard::new(stringify!($ident), None);
+    };
+}
+
+/// Checks that a specified mark was hit exactly the specified number of times.
+///
+/// # Example
+///
+/// ```
+/// struct CoveredDropper;
+/// impl Drop for CoveredDropper {
+///     fn drop(&mut self) {
+///         cov_mark::hit!(covered_dropper_drops);
+///     }
+/// }
+///
+/// #[test]
+/// fn drop_count_test() {
+///     cov_mark::check_count!(covered_dropper_drops, 2);
+///     let _covered_dropper1 = CoveredDropper;
+///     let _covered_dropper2 = CoveredDropper;
+/// }
+/// ```
+#[macro_export]
+macro_rules! check_count {
+    ($ident:ident, $count: literal) => {
+        let _guard = $crate::__rt::Guard::new(stringify!($ident), Some($count));
+    };
+}
+
+#[doc(hidden)]
+#[cfg(feature = "enable")]
+pub mod __rt {
+    use std::{
+        cell::{Cell, RefCell},
+        rc::Rc,
+        sync::atomic::{AtomicUsize, Ordering::Relaxed},
+    };
+
+    /// Even with
+    /// https://github.com/rust-lang/rust/commit/641d3b09f41b441f2c2618de32983ad3d13ea3f8,
+    /// a `thread_local` generates significantly more verbose assembly on x86
+    /// than atomic, so we'll use atomic for the fast path
+    static LEVEL: AtomicUsize = AtomicUsize::new(0);
+
+    thread_local! {
+        static ACTIVE: RefCell<Vec<Rc<GuardInner>>> = Default::default();
+    }
+
+    #[inline(always)]
+    pub fn hit(key: &'static str) {
+        if LEVEL.load(Relaxed) > 0 {
+            hit_cold(key);
+        }
+
+        #[cold]
+        fn hit_cold(key: &'static str) -> () {
+            ACTIVE.with(|it| it.borrow().iter().for_each(|g| g.hit(key)))
+        }
+    }
+
+    struct GuardInner {
+        mark: &'static str,
+        hits: Cell<usize>,
+        expected_hits: Option<usize>,
+    }
+
+    pub struct Guard {
+        inner: Rc<GuardInner>,
+    }
+
+    impl GuardInner {
+        fn hit(&self, key: &'static str) {
+            if key == self.mark {
+                self.hits.set(self.hits.get().saturating_add(1))
+            }
+        }
+    }
+
+    impl Guard {
+        pub fn new(mark: &'static str, expected_hits: Option<usize>) -> Guard {
+            let inner = GuardInner {
+                mark,
+                hits: Cell::new(0),
+                expected_hits,
+            };
+            let inner = Rc::new(inner);
+            LEVEL.fetch_add(1, Relaxed);
+            ACTIVE.with(|it| it.borrow_mut().push(Rc::clone(&inner)));
+            Guard { inner }
+        }
+    }
+
+    impl Drop for Guard {
+        fn drop(&mut self) {
+            LEVEL.fetch_sub(1, Relaxed);
+            let last = ACTIVE.with(|it| it.borrow_mut().pop());
+
+            if std::thread::panicking() {
+                return;
+            }
+
+            let last = last.unwrap();
+            assert!(Rc::ptr_eq(&last, &self.inner));
+            let hit_count = last.hits.get();
+            match last.expected_hits {
+                Some(hits) => assert!(
+                    hit_count == hits,
+                    "mark was hit {} times, expected {}",
+                    hit_count,
+                    hits
+                ),
+                None => assert!(hit_count > 0, "mark was not hit"),
+            }
+        }
+    }
+}
+
+#[doc(hidden)]
+#[cfg(not(feature = "enable"))]
+pub mod __rt {
+    #[inline(always)]
+    pub fn hit(_: &'static str) {}
+
+    #[non_exhaustive]
+    pub struct Guard;
+
+    impl Guard {
+        pub fn new(_: &'static str, _: Option<usize>) -> Guard {
+            Guard
+        }
+    }
+}
diff --git a/vendor/cov-mark/tests/smoke.rs b/vendor/cov-mark/tests/smoke.rs
new file mode 100644
index 000000000..102636a0d
--- /dev/null
+++ b/vendor/cov-mark/tests/smoke.rs
@@ -0,0 +1,27 @@
+fn safe_divide(dividend: u32, divisor: u32) -> u32 {
+    if divisor == 0 {
+        cov_mark::hit!(save_divide_zero);
+        return 0;
+    }
+    dividend / divisor
+}
+
+#[test]
+fn test_safe_divide_by_zero() {
+    cov_mark::check!(save_divide_zero);
+    assert_eq!(safe_divide(92, 0), 0);
+}
+
+struct CoveredDropper;
+impl Drop for CoveredDropper {
+    fn drop(&mut self) {
+        cov_mark::hit!(covered_dropper_drops);
+    }
+}
+
+#[test]
+fn test_drop_count() {
+    cov_mark::check_count!(covered_dropper_drops, 2);
+    let _covered_dropper1 = CoveredDropper;
+    let _covered_dropper2 = CoveredDropper;
+}