Add 'not' to commands that are expected to fail.
This is at least good documentation, but also opens the possibility of
using pipefail.
llvm-svn: 185652
diff --git a/clang/test/FixIt/messages.cpp b/clang/test/FixIt/messages.cpp
index b939144..eb4c09d 100644
--- a/clang/test/FixIt/messages.cpp
+++ b/clang/test/FixIt/messages.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -std=c++11 2>&1 %s | FileCheck -strict-whitespace %s
+// RUN: not %clang_cc1 -fsyntax-only -std=c++11 2>&1 %s | FileCheck -strict-whitespace %s
struct A {
unsigned int a;