Add difference_type to ImmutableMap/Set iterators so they have a complete set of typedefs.

llvm-svn: 188579

2 files changed, 2 insertions, 0 deletions

diff --git a/llvm/include/llvm/ADT/ImmutableMap.h b/llvm/include/llvm/ADT/ImmutableMap.h
index a667479a4d1..8f8fb987704 100644
--- a/llvm/include/llvm/ADT/ImmutableMap.h
+++ b/llvm/include/llvm/ADT/ImmutableMap.h
@@ -211,6 +211,7 @@ public:
     friend class ImmutableMap;
 
   public:
+    typedef ptrdiff_t difference_type;
     typedef typename ImmutableMap<KeyT,ValT,ValInfo>::value_type value_type;
     typedef typename ImmutableMap<KeyT,ValT,ValInfo>::value_type_ref reference;
     typedef typename iterator::value_type *pointer;
diff --git a/llvm/include/llvm/ADT/ImmutableSet.h b/llvm/include/llvm/ADT/ImmutableSet.h
index fbdf066e61a..2a0579e29ee 100644
--- a/llvm/include/llvm/ADT/ImmutableSet.h
+++ b/llvm/include/llvm/ADT/ImmutableSet.h
@@ -1060,6 +1060,7 @@ public:
     friend class ImmutableSet<ValT,ValInfo>;
 
   public:
+    typedef ptrdiff_t difference_type;
     typedef typename ImmutableSet<ValT,ValInfo>::value_type value_type;
     typedef typename ImmutableSet<ValT,ValInfo>::value_type_ref reference;
     typedef typename iterator::value_type *pointer;