Add test for PR 8111.  By Frits van Bommel.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119870 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/CMakeLists.txt b/unittests/CMakeLists.txt
index eaecc9c..76b76f2 100644
--- a/unittests/CMakeLists.txt
+++ b/unittests/CMakeLists.txt
@@ -43,6 +43,7 @@
   ADT/DeltaAlgorithmTest.cpp
   ADT/DenseMapTest.cpp
   ADT/DenseSetTest.cpp
+  ADT/FoldingSet.cpp
   ADT/ilistTest.cpp
   ADT/ImmutableSetTest.cpp
   ADT/IntervalMapTest.cpp