Public inheritance of a class template fails unexpectedly

Question

Why does the following fail with error: 'a_' was not declared in this scope in the context of Bar::get()?

template <typename N>
class Foo
{
public:
  Foo() { }

protected:
  N a_;
};

template <typename N>
class Bar : public Foo<N>
{
public:
  Bar() : Foo<N>() { }

  N get() { return a_; }
};

An answer can be found [here](https://stackoverflow.com/a/577290/2682312). — Axalo, Aug 15 '18 at 00:50

score 1 · Accepted Answer · answered Aug 15 '18 at 00:50

1

You need to use the reference this->_a

N get() { return this->a_; }

answered Aug 15 '18 at 00:50

Saher Ahwal

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1

You do not _need_ to use `this->`; `Foo::` would also work. – Axalo Aug 15 '18 at 00:59

Public inheritance of a class template fails unexpectedly

1 Answers1