1 files changed, 1 insertions, 0 deletions
diff --git a/src/pdf/SkSinglyLinkedList.h b/src/pdf/SkSinglyLinkedList.h
index c157c31d16..c7101141d6 100644
--- a/src/pdf/SkSinglyLinkedList.h
+++ b/src/pdf/SkSinglyLinkedList.h
@@ -18,6 +18,7 @@ public:
     ~SkSinglyLinkedList() { this->reset(); }
     void reset() {
         SkASSERT(fHead != nullptr || nullptr == fTail);
+        // Use a while loop rather than recursion to avoid stack overflow.
         Node* node = fHead;
         while (node) {
             Node* next = node->fNext;