1 files changed, 31 insertions, 10 deletions
diff --git a/vendor/chrono/src/round.rs b/vendor/chrono/src/round.rs
index b95f24570..f43ab595c 100644
--- a/vendor/chrono/src/round.rs
+++ b/vendor/chrono/src/round.rs
@@ -24,7 +24,7 @@ pub trait SubsecRound {
     ///
     /// # Example
     /// ``` rust
-    /// # use chrono::{DateTime, SubsecRound, Timelike, TimeZone, Utc, NaiveDate};
+    /// # use chrono::{SubsecRound, Timelike, Utc, NaiveDate};
     /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap();
     /// assert_eq!(dt.round_subsecs(2).nanosecond(), 150_000_000);
     /// assert_eq!(dt.round_subsecs(1).nanosecond(), 200_000_000);
@@ -36,7 +36,7 @@ pub trait SubsecRound {
     ///
     /// # Example
     /// ``` rust
-    /// # use chrono::{DateTime, SubsecRound, Timelike, TimeZone, Utc, NaiveDate};
+    /// # use chrono::{SubsecRound, Timelike, Utc, NaiveDate};
     /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap();
     /// assert_eq!(dt.trunc_subsecs(2).nanosecond(), 150_000_000);
     /// assert_eq!(dt.trunc_subsecs(1).nanosecond(), 100_000_000);
@@ -75,7 +75,7 @@ where
 }
 
 // Return the maximum span in nanoseconds for the target number of digits.
-fn span_for_digits(digits: u16) -> u32 {
+const fn span_for_digits(digits: u16) -> u32 {
     // fast lookup form of: 10^(9-min(9,digits))
     match digits {
         0 => 1_000_000_000,
@@ -111,7 +111,7 @@ pub trait DurationRound: Sized {
     ///
     /// # Example
     /// ``` rust
-    /// # use chrono::{DateTime, DurationRound, Duration, TimeZone, Utc, NaiveDate};
+    /// # use chrono::{DurationRound, Duration, Utc, NaiveDate};
     /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap();
     /// assert_eq!(
     ///     dt.duration_round(Duration::milliseconds(10)).unwrap().to_string(),
@@ -128,7 +128,7 @@ pub trait DurationRound: Sized {
     ///
     /// # Example
     /// ``` rust
-    /// # use chrono::{DateTime, DurationRound, Duration, TimeZone, Utc, NaiveDate};
+    /// # use chrono::{DurationRound, Duration, Utc, NaiveDate};
     /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap();
     /// assert_eq!(
     ///     dt.duration_trunc(Duration::milliseconds(10)).unwrap().to_string(),
@@ -178,6 +178,9 @@ where
     T: Timelike + Add<Duration, Output = T> + Sub<Duration, Output = T>,
 {
     if let Some(span) = duration.num_nanoseconds() {
+        if span < 0 {
+            return Err(RoundingError::DurationExceedsLimit);
+        }
         if naive.timestamp().abs() > MAX_SECONDS_TIMESTAMP_FOR_NANOS {
             return Err(RoundingError::TimestampExceedsLimit);
         }
@@ -217,6 +220,9 @@ where
     T: Timelike + Add<Duration, Output = T> + Sub<Duration, Output = T>,
 {
     if let Some(span) = duration.num_nanoseconds() {
+        if span < 0 {
+            return Err(RoundingError::DurationExceedsLimit);
+        }
         if naive.timestamp().abs() > MAX_SECONDS_TIMESTAMP_FOR_NANOS {
             return Err(RoundingError::TimestampExceedsLimit);
         }
@@ -243,7 +249,7 @@ pub enum RoundingError {
     /// Error when the Duration exceeds the Duration from or until the Unix epoch.
     ///
     /// ``` rust
-    /// # use chrono::{DateTime, DurationRound, Duration, RoundingError, TimeZone, Utc};
+    /// # use chrono::{DurationRound, Duration, RoundingError, TimeZone, Utc};
     /// let dt = Utc.with_ymd_and_hms(1970, 12, 12, 0, 0, 0).unwrap();
     ///
     /// assert_eq!(
@@ -256,7 +262,7 @@ pub enum RoundingError {
     /// Error when `Duration.num_nanoseconds` exceeds the limit.
     ///
     /// ``` rust
-    /// # use chrono::{DateTime, DurationRound, Duration, RoundingError, TimeZone, Utc, NaiveDate};
+    /// # use chrono::{DurationRound, Duration, RoundingError, Utc, NaiveDate};
     /// let dt = NaiveDate::from_ymd_opt(2260, 12, 31).unwrap().and_hms_nano_opt(23, 59, 59, 1_75_500_000).unwrap().and_local_timezone(Utc).unwrap();
     ///
     /// assert_eq!(
@@ -269,7 +275,7 @@ pub enum RoundingError {
     /// Error when `DateTime.timestamp_nanos` exceeds the limit.
     ///
     /// ``` rust
-    /// # use chrono::{DateTime, DurationRound, Duration, RoundingError, TimeZone, Utc};
+    /// # use chrono::{DurationRound, Duration, RoundingError, TimeZone, Utc};
     /// let dt = Utc.with_ymd_and_hms(2300, 12, 12, 0, 0, 0).unwrap();
     ///
     /// assert_eq!(dt.duration_round(Duration::days(1)), Err(RoundingError::TimestampExceedsLimit),);
@@ -304,10 +310,10 @@ impl std::error::Error for RoundingError {
 
 #[cfg(test)]
 mod tests {
-    use super::{Duration, DurationRound, SubsecRound};
+    use super::{Duration, DurationRound, RoundingError, SubsecRound};
     use crate::offset::{FixedOffset, TimeZone, Utc};
-    use crate::NaiveDate;
     use crate::Timelike;
+    use crate::{NaiveDate, NaiveDateTime};
 
     #[test]
     fn test_round_subsecs() {
@@ -760,4 +766,19 @@ mod tests {
             "1969-12-12 12:10:00 UTC"
         );
     }
+
+    #[test]
+    fn issue1010() {
+        let dt = NaiveDateTime::from_timestamp_opt(-4227854320, 1678774288).unwrap();
+        let span = Duration::microseconds(-7019067213869040);
+        assert_eq!(dt.duration_trunc(span), Err(RoundingError::DurationExceedsLimit));
+
+        let dt = NaiveDateTime::from_timestamp_opt(320041586, 1920103021).unwrap();
+        let span = Duration::nanoseconds(-8923838508697114584);
+        assert_eq!(dt.duration_round(span), Err(RoundingError::DurationExceedsLimit));
+
+        let dt = NaiveDateTime::from_timestamp_opt(-2621440, 0).unwrap();
+        let span = Duration::nanoseconds(-9223372036854771421);
+        assert_eq!(dt.duration_round(span), Err(RoundingError::DurationExceedsLimit));
+    }
 }