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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /vendor/anyhow/tests/drop/mod.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/anyhow/tests/drop/mod.rs')
-rw-r--r--vendor/anyhow/tests/drop/mod.rs53
1 files changed, 53 insertions, 0 deletions
diff --git a/vendor/anyhow/tests/drop/mod.rs b/vendor/anyhow/tests/drop/mod.rs
new file mode 100644
index 000000000..7da4bf55a
--- /dev/null
+++ b/vendor/anyhow/tests/drop/mod.rs
@@ -0,0 +1,53 @@
+#![allow(clippy::module_name_repetitions)]
+
+use std::error::Error as StdError;
+use std::fmt::{self, Display};
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::Arc;
+
+#[derive(Debug)]
+pub struct Flag {
+ atomic: Arc<AtomicBool>,
+}
+
+impl Flag {
+ pub fn new() -> Self {
+ Flag {
+ atomic: Arc::new(AtomicBool::new(false)),
+ }
+ }
+
+ pub fn get(&self) -> bool {
+ self.atomic.load(Ordering::Relaxed)
+ }
+}
+
+#[derive(Debug)]
+pub struct DetectDrop {
+ has_dropped: Flag,
+}
+
+impl DetectDrop {
+ pub fn new(has_dropped: &Flag) -> Self {
+ DetectDrop {
+ has_dropped: Flag {
+ atomic: Arc::clone(&has_dropped.atomic),
+ },
+ }
+ }
+}
+
+impl StdError for DetectDrop {}
+
+impl Display for DetectDrop {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ write!(f, "oh no!")
+ }
+}
+
+impl Drop for DetectDrop {
+ fn drop(&mut self) {
+ let already_dropped = self.has_dropped.atomic.swap(true, Ordering::Relaxed);
+ assert!(!already_dropped);
+ }
+}