Merge pull request #7146 from cakebaker/bump_chrono_tz

Bump `chrono-tz` to `0.10.0`

Author: sylvestre

Cargo.lock

@@ -278,10 +278,9 @@ chrono = { version = "0.4.38", default-features = false, features = [
   "alloc",
   "clock",
 ] }
+chrono-tz = "0.10.0"
 clap = { version = "4.5", features = ["wrap_help", "cargo"] }
 clap_complete = "4.4"
-chrono-tz = "0.8.3"
-iana-time-zone = "0.1.57"
 clap_mangen = "0.2"
 compare = "0.1.0"
 coz = { version = "0.1.3" }
@@ -299,6 +298,7 @@ gcd = "2.3"
 glob = "0.3.1"
 half = "2.4.1"
 hostname = "0.4"
+iana-time-zone = "0.1.57"
 indicatif = "0.17.8"
 itertools = "0.14.0"
 libc = "0.2.153"

Cargo.toml

@@ -277,7 +277,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
                     // TODO - Revisit when chrono 0.5 is released. https://github.com/chronotope/chrono/issues/970
                     let tz = match std::env::var("TZ") {
                         // TODO Support other time zones...
-                        Ok(s) if s == "UTC0" => Tz::Etc__UTC,
+                        Ok(s) if s == "UTC0" || s.is_empty() => Tz::Etc__UTC,
                         _ => match get_timezone() {
                             Ok(tz_str) => tz_str.parse().unwrap(),
                             Err(_) => Tz::Etc__UTC,
@@ -288,7 +288,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
                     // GNU `date` uses `%N` for nano seconds, however crate::chrono uses `%f`
                     let format_string = &format_string
                         .replace("%N", "%f")
-                        .replace("%Z", tz_abbreviation);
+                        .replace("%Z", tz_abbreviation.unwrap_or("UTC"));
                     // Refuse to pass this string to chrono as it is crashing in this crate
                     if format_string.contains("%#z") {
                         return Err(USimpleError::new(

fuzz/Cargo.lock

@@ -482,3 +482,12 @@ fn test_date_from_stdin() {
              Sat Apr 15 18:30:00 UTC 2023\n",
         );
 }
+
+#[test]
+fn test_date_empty_tz() {
+    new_ucmd!()
+        .env("TZ", "")
+        .arg("+%Z")
+        .succeeds()
+        .stdout_only("UTC\n");
+}