Fix panic on malformed query

resolves #23

2 files changed, 6 insertions, 2 deletions

diff --git a/src/de/parse.rs b/src/de/parse.rs
index 0d4c1db..6f10ac3 100644
--- a/src/de/parse.rs
+++ b/src/de/parse.rs
@@ -140,7 +140,7 @@ impl<'a> Iterator for Parser<'a> {
                     self.index += 1;
                     self.acc.1 += 1;
                     match self.iter.next() {
-                        Some(v) if v == &b'%' => {
+                        Some(v) if v == &b'%' && self.iter.len() >= 2 => {
                             match &self.iter.as_slice()[..2] {
                                 b"5B" => {
                                     // skip the next two characters
diff --git a/tests/test_deserialize.rs b/tests/test_deserialize.rs
index 99ab241..beede63 100644
--- a/tests/test_deserialize.rs
+++ b/tests/test_deserialize.rs
@@ -506,7 +506,7 @@ fn strict_mode() {
 
     let params = OddTest { a: 12 };
     let enc_params = qs::to_string(&params).unwrap();
-    println!("Enocded as: {}", enc_params);
+    println!("Encoded as: {}", enc_params);
     let rec_params: Result<OddTest, _> =
         strict_config.deserialize_str(&enc_params);
     assert_eq!(rec_params.unwrap(), params);
@@ -516,6 +516,10 @@ fn strict_mode() {
         loose_config.deserialize_str(&enc_params);
     assert!(rec_params.is_err());
     println!("{}", rec_params.unwrap_err());
+
+    // Test that we don't panic
+    let malformed_params: Result<Query, _> = loose_config.deserialize_str("%");
+    assert!(malformed_params.is_err());
 }
 
 #[test]