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-rw-r--r--include/llvm/ADT/iterator.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/llvm/ADT/iterator.h b/include/llvm/ADT/iterator.h
index 00d0ba15ed..0b33d7e0a1 100644
--- a/include/llvm/ADT/iterator.h
+++ b/include/llvm/ADT/iterator.h
@@ -32,7 +32,7 @@ namespace llvm {
/// terms of addition of one. These aren't equivalent for all iterator
/// categories, and respecting that adds a lot of complexity for little gain.
template <typename DerivedT, typename IteratorCategoryT, typename T,
- typename DifferenceTypeT, typename PointerT = T *,
+ typename DifferenceTypeT = ptrdiff_t, typename PointerT = T *,
typename ReferenceT = T &>
struct iterator_facade_base
: std::iterator<IteratorCategoryT, T, DifferenceTypeT, PointerT,