Fixed parser crash with dependent-sized bitfields.

src/CppParser/Parser.cpp

@@ -1323,7 +1323,7 @@ Field* Parser::WalkFieldCXX(clang::FieldDecl* FD, Class* Class)
     F->Access = ConvertToAccess(FD->getAccess());
     F->Class = Class;
     F->IsBitField = FD->isBitField();
-    if (F->IsBitField)
+    if (F->IsBitField && !F->IsDependent)
         F->BitWidth = FD->getBitWidthValue(C->getASTContext());
 
     Class->Fields.push_back(F);

tests/Common/Common.h

@@ -647,6 +647,9 @@ DLL_API decltype(nullptr) TestNullPtrTypeRet()
 template<typename T> struct DependentType
 {
     DependentType(typename T::Dependent* t) { }
+
+private:
+    struct Bitset { int length : sizeof(T); };
 };
 
 class PureDtor