finish the implementation of -imacros. The driver still needs to be hooked up.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68640 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/include-macros.c b/test/Preprocessor/include-macros.c
new file mode 100644
index 0000000..c085e0c
--- /dev/null
+++ b/test/Preprocessor/include-macros.c
@@ -0,0 +1,4 @@
+// RUN: clang-cc -E -Dtest=FOO -imacros pr2086.h %s | grep 'HERE: test'
+
+// This should not be expanded into FOO because pr2086.h undefs 'test'.
+HERE: test