Fix serialize_key of 1-entry maps

dtolnay · Aug 2, 2022 · f7b55f1 · f7b55f1
1 parent 5299f1e
commit f7b55f1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/ser.rs b/src/ser.rs
@@ -635,8 +635,8 @@ where
         T: ?Sized + ser::Serialize,
     {
         if let State::CheckForTag = self.state {
-            self.emit_mapping_start()?;
             self.state = State::NothingInParticular;
+            self.emit_mapping_start()?;
         }
         key.serialize(&mut **self)
     }