Force inclusion of throwNullDerefException(), CMake needs it.

interpreter/cling/lib/Interpreter/RequiredSymbols.cpp

@@ -15,6 +15,8 @@
 #include "clang/AST/Type.h"
 #include "llvm/Support/raw_ostream.h"
 
+extern "C" void cling__runtime__internal__throwNullDerefException(void*, void*);
+
 namespace cling {
 namespace internal {
 void symbol_requester() {
@@ -27,6 +29,7 @@ void symbol_requester() {
    h.findFunctionProto(0, "", "", LookupHelper::NoDiagnostics);
    h.findFunctionArgs(0, "", "", LookupHelper::NoDiagnostics);
    runtime::internal::DynamicExprInfo DEI(0,0,false);
+   cling__runtime__internal__throwNullDerefException(0, 0);
    DEI.getExpr();
 }
 }