rust/protover: fix hyphen parsing bug in ProtoSet::from_str()

It was parsing "1-2-3" as if it were 1-2, ignoring the 2nd hyphen
and everything after.

Introduced in d1820c1516a31a149fc51a9e5126bf899e4c4e08.

Fixes #27164; bugfix on 0.3.3.1-alpha.

1 files changed, 13 insertions, 1 deletions

diff --git a/src/rust/protover/protoset.rs b/src/rust/protover/protoset.rs
index 4afc50edf8..61b21ede98 100644
--- a/src/rust/protover/protoset.rs
+++ b/src/rust/protover/protoset.rs
@@ -348,7 +348,7 @@ impl FromStr for ProtoSet {
             if p.is_empty() {
                 continue;
             } else if p.contains('-') {
-                let mut pair = p.split('-');
+                let mut pair = p.splitn(2, '-');
 
                 let low  = pair.next().ok_or(ProtoverError::Unparseable)?;
                 let high = pair.next().ok_or(ProtoverError::Unparseable)?;
@@ -539,6 +539,18 @@ mod test {
     }
 
     #[test]
+    fn test_versions_from_str_hyphens() {
+        assert_eq!(Err(ProtoverError::Unparseable), ProtoSet::from_str("--1"));
+        assert_eq!(Err(ProtoverError::Unparseable), ProtoSet::from_str("-1-2"));
+        assert_eq!(Err(ProtoverError::Unparseable), ProtoSet::from_str("1--2"));
+    }
+
+    #[test]
+    fn test_versions_from_str_triple() {
+        assert_eq!(Err(ProtoverError::Unparseable), ProtoSet::from_str("1-2-3"));
+    }
+
+    #[test]
     fn test_versions_from_str_1exclam() {
         assert_eq!(Err(ProtoverError::Unparseable), ProtoSet::from_str("1,!"));
     }