diff --git a/test/CBackend/2002-10-15-OpaqueTypeProblem.ll b/test/CBackend/2002-10-15-OpaqueTypeProblem.ll
new file mode 100644
index 00000000000..d20b975c950
--- /dev/null
+++ b/test/CBackend/2002-10-15-OpaqueTypeProblem.ll
@@ -0,0 +1,4 @@
+struct Comm;
+typedef struct Comm* MPI_Comm;
+MPI_Comm* thing;
+
diff --git a/test/CodeGen/CBackend/2002-10-15-OpaqueTypeProblem.ll b/test/CodeGen/CBackend/2002-10-15-OpaqueTypeProblem.ll
new file mode 100644
index 00000000000..d20b975c950
--- /dev/null
+++ b/test/CodeGen/CBackend/2002-10-15-OpaqueTypeProblem.ll
@@ -0,0 +1,4 @@
+struct Comm;
+typedef struct Comm* MPI_Comm;
+MPI_Comm* thing;
+