diff --git a/test/Index/print-bitwidth.c b/test/Index/print-bitwidth.c
new file mode 100644
index 0000000..e9e330a
--- /dev/null
+++ b/test/Index/print-bitwidth.c
@@ -0,0 +1,25 @@
+union S {
+  unsigned ac : 4;
+  unsigned : 4;
+  unsigned clock : 1;
+  unsigned : 0;
+  unsigned flag : 1;
+};
+
+struct X {
+  unsigned light : 1;
+  unsigned toaster : 1;
+  int count;
+  union S stat;
+};
+
+// RUN: c-index-test -test-print-bitwidth %s | FileCheck %s
+// CHECK: FieldDecl=ac:2:12 (Definition) bitwidth=4
+// CHECK: FieldDecl=:3:3 (Definition) bitwidth=4
+// CHECK: FieldDecl=clock:4:12 (Definition) bitwidth=1
+// CHECK: FieldDecl=:5:3 (Definition) bitwidth=0
+// CHECK: FieldDecl=flag:6:12 (Definition) bitwidth=1
+// CHECK: FieldDecl=light:10:12 (Definition) bitwidth=1
+// CHECK: FieldDecl=toaster:11:12 (Definition) bitwidth=1
+// CHECK-NOT: count
+// CHECK-NOT: stat