http://llvm.org/bugs/show_bug.cgi?id=12508
Bug #: 12508
Summary: clang fails to consider inheritance-path access
control for implicit calls to special members of
virtual bases
Product: clang
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
clang needs to be considering whether the inheritance path to a virtual base
constrains access when checking implicit calls to special members in the
following cases:
- when deciding whether or not to define an implicit member as deleted (in
C++11)
- when initializing a base-class subobject in a ctor
- when checking access to subobject destructors in a ctor/dtor
As examples, I believe each of the following cases is ill-formed:
struct A {
A(); A(const A&); ~A();
};
class B : private virtual A {};
class C : public B {
C() : A() {} // explicit base init, implicit base destroy
C(int) {} // implicit base init, implicit base destroy
~C() {} // implicit base destroy
};
class D {
// In C++11, the implicit dtor, default ctor, and copy ctor here should all
be defined as deleted
};
It looks like we currently get the explicit base-init case right, but not the
others.
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