Add coverage tests of C and Obj-C language features.
 - AST printing, dumping, serialization, codegen.
 - HTML printing.
 - Parser callbacks.

Several of these are XFAIL because they trigger unimplemented code.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57081 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Coverage/serialize.c b/test/Coverage/serialize.c
new file mode 100644
index 0000000..5c81f31
--- /dev/null
+++ b/test/Coverage/serialize.c
@@ -0,0 +1,4 @@
+// RUN: clang -fsyntax-only --serialize %s
+// XFAIL
+
+#include "c-language-features.inc"