Add PTH test case for <rdar://problem/8227989>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109555 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/PCH/pth.c b/test/PCH/pth.c
new file mode 100644
index 0000000..1262f8a
--- /dev/null
+++ b/test/PCH/pth.c
@@ -0,0 +1,7 @@
+// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-pth -o %t %S/pth.h
+// RUN: %clang_cc1 -triple i386-unknown-unknown -include-pth %t -fsyntax-only %s 2>&1 | FileCheck %s
+
+#error This is the only diagnostic
+
+// CHECK: This is the only diagnostic
+// CHECK: 1 error generated.
\ No newline at end of file