Implement support for -nostdc++. Fixes PR6446.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99417 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 4133346..e5ee287 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -948,6 +948,7 @@
     CmdArgs.push_back("-g");
 
   Args.AddLastArg(CmdArgs, options::OPT_nostdinc);
+  Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
   Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
 
   // Pass the path to compiler resource files.
@@ -1706,6 +1707,7 @@
   if (!Args.hasArg(options::OPT_Q))
     CmdArgs.push_back("-quiet");
   Args.AddAllArgs(CmdArgs, options::OPT_nostdinc);
+  Args.AddAllArgs(CmdArgs, options::OPT_nostdincxx);
   Args.AddLastArg(CmdArgs, options::OPT_v);
   Args.AddAllArgs(CmdArgs, options::OPT_I_Group, options::OPT_F);
   Args.AddLastArg(CmdArgs, options::OPT_P);