Stage two of getting CFE top correct.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39734 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/poison.c b/test/Preprocessor/poison.c
new file mode 100644
index 0000000..5df4b47
--- /dev/null
+++ b/test/Preprocessor/poison.c
@@ -0,0 +1,4 @@
+// RUN: clang %s -E 2>&1 | grep error
+
+#pragma GCC poison rindex
+rindex(some_string, 'h');