Adding failing LoopConvert testcase

    
LoopConvert isn't properly handling iterators whose dereference operator
returns by value. This test case demonstrates the failure.

See PR15437.

llvm-svn: 176437

1 files changed, 13 insertions, 0 deletions

diff --git a/clang-tools-extra/test/cpp11-migrate/LoopConvert/Inputs/structures.h b/clang-tools-extra/test/cpp11-migrate/LoopConvert/Inputs/structures.h
index 2507b34200c..3379b05ac1e 100644
--- a/clang-tools-extra/test/cpp11-migrate/LoopConvert/Inputs/structures.h
+++ b/clang-tools-extra/test/cpp11-migrate/LoopConvert/Inputs/structures.h
@@ -137,4 +137,17 @@ struct Nested {
   iterator end();
 };
 
+// Like llvm::SmallPtrSet, the iterator has a dereference operator that returns
+// by value instead of by reference.
+template <typename T>
+struct PtrSet {
+  struct iterator {
+    bool operator!=(const iterator &other) const;
+    const T operator*();
+    iterator &operator++();
+  };
+  iterator begin() const;
+  iterator end() const;
+};
+
 #endif  // STRUCTURES_H