https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65906
Bug ID: 65906
Summary: using-declaration allowed for non-direct base class
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: danregister at poczta dot fm
Target Milestone: ---
GCC compiles without complaining the following code, which contains
using-declaration which brings constructor of non-direct base class:
----------------------------------------------------------------
#include <iostream>
void log(std::string msg) { std::cout << msg << std::endl; }
struct Base
{
Base() { log(__func__); }
Base(int, int) { log(__func__); }
};
struct D1 : Base
{
D1() { log(__func__); }
};
struct D2 : D1
{
D2() { log(__func__); }
using Base::Base;
};
int main()
{
D2 d(1, 2);
}
----------------------------------------------------------------
The output:
----------------------------------------------------------------
Base
D1
----------------------------------------------------------------
The same code compiled with clang produces: error: 'Base' is not a direct base
of 'D2', cannot inherit constructors
Possible duplicate: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32039
