Take into account the access control when we build the ctor calls.

This patch teaches clang to ignore diagnostics due to calls to private ctors.

Author: vgvassilev

include/clang/Interpreter/CppInterOpInterpreter.h

@@ -307,11 +307,20 @@ class Interpreter {
       }
     }
 
+    clang::LangOptions& LO
+      = const_cast<clang::LangOptions&>(getCompilerInstance()->getLangOpts());
+    bool SavedAccessControl = LO.AccessControl;
+    LO.AccessControl = withAccessControl;
+
     if (auto Err = ParseAndExecute(code)) {
+      LO.AccessControl = SavedAccessControl;
       llvm::logAllUnhandledErrors(std::move(Err), llvm::errs(),
                                   "Failed to compileFunction: ");
       return nullptr;
     }
+
+    LO.AccessControl = SavedAccessControl;
+
     return getAddressOfGlobal(name);
   }
 

unittests/CppInterOp/FunctionReflectionTest.cpp

@@ -673,6 +673,7 @@ TEST(FunctionReflectionTest, Construct) {
   Sema *S = &Interp->getCI()->getSema();
 
   Interp->declare(R"(
+    #include <new>
     extern "C" int printf(const char*,...);
     class C {
       C() {
@@ -700,6 +701,7 @@ TEST(FunctionReflectionTest, Destruct) {
   Sema *S = &Interp->getCI()->getSema();
 
   Interp->declare(R"(
+    #include <new>
     extern "C" int printf(const char*,...);
     class C {
       C() {}