1 files changed, 9 insertions, 0 deletions
diff --git a/clang/lib/Driver/ArgList.cpp b/clang/lib/Driver/ArgList.cpp
index a8b00bb750d..a45e9d67b21 100644
--- a/clang/lib/Driver/ArgList.cpp
+++ b/clang/lib/Driver/ArgList.cpp
@@ -9,6 +9,7 @@
 
 #include "clang/Driver/ArgList.h"
 #include "clang/Driver/Arg.h"
+#include "clang/Driver/Option.h"
 
 using namespace clang::driver;
 
@@ -20,3 +21,11 @@ ArgList::~ArgList() {
   for (iterator it = begin(), ie = end(); it != ie; ++ie)
     delete *it;
 }
+
+void ArgList::append(Arg *A) {
+  if (A->getOption().isUnsupported()) {
+    assert(0 && "FIXME: unsupported unsupported.");
+  }
+
+  Args.push_back(A);
+}