constructor inheritance with C++11 compiler is generating error

Question

I am trying to compile the following code (taken directly from wikipedia) to understand constructor inheritance in C++11 :

class BaseClass {
    public:
    BaseClass(int value);
};

class DerivedClass : public BaseClass {
    public:
    using BaseClass::BaseClass;
};

I am compiling this file as follows :

/usr/bin/g++-4.7 -c -std=c++11 file.cpp

But this is giving the following error :

error: ‘BaseClass::BaseClass’ names constructor

I do not know where am I going wrong

ideone.com/hDLJhN

Qwertiy
– Qwertiy

2016-01-25 13:59:09 +00:00
Commented Jan 25, 2016 at 13:59 — Qwertiy
– Qwertiy, Commented Jan 25, 2016 at 13:59

ildjarn · Accepted Answer · 2016-01-25 14:07:08Z

4

Inheriting constructors were not supported in GCC until version 4.8.

Source

answered Jan 25, 2016 at 14:07

ildjarn

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Comments

NathanOliver · Accepted Answer · 2016-01-25 14:07:35Z

3

According to C++0x/C++11 Support in GCC inheriting constructors were not available until gcc 4.8.

I can confirm that with http://gcc.godbolt.org/ as

class BaseClass {
    public:
    BaseClass(int value);
};

class DerivedClass : public BaseClass {
    public:
    using BaseClass::BaseClass;
};

int main()
{
}

Compiles just fine with gcc 4.8.1(Live Example)

answered Jan 25, 2016 at 14:07

NathanOliver

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