date: bump parse_datetime & add test for leap-1 GNU test (#10933)

Rely on parse_datetime update

Test that adding years to Feb 29 overflows to March 1 when target
year is not a leap year (matching GNU behavior).

Author: sylvestre

Cargo.lock

@@ -360,7 +360,7 @@ num-bigint = "0.4.4"
 num-prime = "0.4.4"
 num-traits = "0.2.19"
 onig = { version = "~6.5.1", default-features = false }
-parse_datetime = "0.13.0"
+parse_datetime = "0.14.0"
 phf = "0.13.1"
 phf_codegen = "0.13.1"
 platform-info = "2.0.3"

Cargo.toml

@@ -2113,3 +2113,26 @@ fn test_date_write_error_dev_full() {
         .fails()
         .stderr_contains("write error");
 }
+
+// Tests for GNU test leap-1: leap year overflow in date arithmetic
+#[test]
+fn test_date_leap1_leap_year_overflow() {
+    // GNU test leap-1: Adding years to Feb 29 should overflow to March 1
+    // if target year is not a leap year
+    new_ucmd!()
+        .args(&["--date", "02/29/1996 1 year", "+%Y-%m-%d"])
+        .succeeds()
+        .stdout_is("1997-03-01\n");
+
+    // Additional cases: 2 years
+    new_ucmd!()
+        .args(&["--date", "1996-02-29 + 2 years", "+%Y-%m-%d"])
+        .succeeds()
+        .stdout_is("1998-03-01\n");
+
+    // Leap year to leap year should not overflow
+    new_ucmd!()
+        .args(&["--date", "1996-02-29 + 4 years", "+%Y-%m-%d"])
+        .succeeds()
+        .stdout_is("2000-02-29\n");
+}