Driver: Implement 'missing argument' error.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ArgList.cpp b/lib/Driver/ArgList.cpp
index 30da136..7653daf 100644
--- a/lib/Driver/ArgList.cpp
+++ b/lib/Driver/ArgList.cpp
@@ -13,7 +13,9 @@
using namespace clang::driver;
-ArgList::ArgList(const char **ArgBegin, const char **ArgEnd) {
+ArgList::ArgList(const char **ArgBegin, const char **ArgEnd)
+ : NumInputArgStrings(ArgEnd - ArgBegin)
+{
ArgStrings.append(ArgBegin, ArgEnd);
}