https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69500
Bug ID: 69500
Summary: friend of enclosed class not allowed access to private
move method
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hadrielk at yahoo dot com
Target Milestone: ---
This might be related and/or a duplicate of bug 60799, but I can't be sure.
The following does not compile in 5.3.0 (nor as far back as 4.7.3, though I
didn't try before that):
/////////////////////////////////////////////
class Outer
{
public:
class Inner
{
public:
Inner() = default;
~Inner() {} // user-defined, not default
private:
Inner(Inner&&) = default;
friend class Outer; // this isn't being honored
};
Inner inners[1] = {};
};
int main()
{
Outer v;
}
/////////////////////////////////////////////
Result:
main.cpp: In function 'int main()':
main.cpp:18:11: in constexpr expansion of 'v.Outer::Outer()'
main.cpp:10:9: error: 'constexpr Outer::Inner::Inner(Outer::Inner&&)' is
private
Inner(Inner&&) = default;
^
main.cpp:18:11: error: within this context
Outer v;
^
The odd thing is if you either define the move constructor, or default the
destructor, or do both, then it compiles fine.
