1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/include/llvm/ADT/CoalescingBitVector.h b/llvm/include/llvm/ADT/CoalescingBitVector.h
index 0a7dcfe22631..18803ecf209f 100644
--- a/llvm/include/llvm/ADT/CoalescingBitVector.h
+++ b/llvm/include/llvm/ADT/CoalescingBitVector.h
@@ -231,10 +231,17 @@ public:
 
   bool operator!=(const ThisT &RHS) const { return !operator==(RHS); }
 
-  class const_iterator
-      : public std::iterator<std::forward_iterator_tag, IndexT> {
+  class const_iterator {
     friend class CoalescingBitVector;
 
+  public:
+    using iterator_category = std::forward_iterator_tag;
+    using value_type = IndexT;
+    using difference_type = std::ptrdiff_t;
+    using pointer = value_type *;
+    using reference = value_type &;
+
+  private:
     // For performance reasons, make the offset at the end different than the
     // one used in \ref begin, to optimize the common `It == end()` pattern.
     static constexpr unsigned kIteratorAtTheEndOffset = ~0u;