diff --git a/sdk/lib/_internal/wasm/lib/sync_star_patch.dart b/sdk/lib/_internal/wasm/lib/sync_star_patch.dart
index 9f73b7ea83b..ece864f78b5 100644
--- a/sdk/lib/_internal/wasm/lib/sync_star_patch.dart
+++ b/sdk/lib/_internal/wasm/lib/sync_star_patch.dart
@@ -139,17 +139,22 @@ class _SyncStarIterator<T> implements Iterator<T> {
       // Case: yield* some_iterator.
       final iterable = _yieldStarIterable;
       if (iterable != null) {
+        _yieldStarIterable = null;
+        _current = null;
         if (iterable is _SyncStarIterable<T>) {
           // We got a recursive yield* of sync* function. Instead of creating
           // a new iterator we replace our current _state (remembering the
           // current _state for later resumption).
           _state = _SuspendState(iterable, _state).._iterator = this;
         } else {
-          _yieldStarIterator = iterable.iterator;
+          try {
+            _yieldStarIterator = iterable.iterator;
+          } catch (exception, stackTrace) {
+            pendingException = exception;
+            pendingStackTrace = stackTrace;
+          }
         }
-        _yieldStarIterable = null;
-        _current = null;
-        // Fetch the next item.
+        // Fetch the next item or continue with exception.
         continue;
       }