Robustify test

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156349 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/availability.c b/test/Index/availability.c
index ddbeb3a..e6b1273 100644
--- a/test/Index/availability.c
+++ b/test/Index/availability.c
@@ -2,5 +2,9 @@
 
 void foo(void) __attribute__((availability(macosx,introduced=10.4,deprecated=10.5,obsoleted=10.7), availability(ios,introduced=3.2,deprecated=4.1)));
 
-// RUN: c-index-test -test-load-source all %s | FileCheck %s
-// CHECK: (ios, introduced=3.2, deprecated=4.1)  (macosx, introduced=10.4, deprecated=10.5, obsoleted=10.7)
+// RUN: c-index-test -test-load-source all %s > %t
+// RUN: FileCheck -check-prefix=CHECK-1 %s < %t
+// RUN: FileCheck -check-prefix=CHECK-2 %s < %t
+// CHECK-1: (ios, introduced=3.2, deprecated=4.1) 
+// CHECK-2: (macosx, introduced=10.4, deprecated=10.5, obsoleted=10.7)
+