https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66350
Bug ID: 66350
Summary: typename should be forbidden in inhering constructors
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: vgheorgh at gmail dot com
Target Milestone: ---
The code below
#include <memory>
template <class T, class Deleter = std::default_delete<T>>
class unique_ptr_wrapper: public std::unique_ptr<T, Deleter>
{
public:
using typename std::unique_ptr<T, Deleter>::unique_ptr; // typename should
be forbidden here
};
int main()
{
unique_ptr_wrapper<int> upw{new int{42}};
}
should be ill formed (no typename required), since we inherit a constructor,
which is not a dependent type. IMO, a diagnostic should be required, however
g++ compiles the program without any warnings.
Tested with gcc4.9/5.1/6 HEAD.
More details: http://stackoverflow.com/q/30554119/3093378
