/usr/include/eiskaltdcpp/dcpp/nullptr.h is in libeiskaltdcpp-dev 2.2.9-3+b2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | // for compilers that don't support nullptr, use the workaround in section 1.1 of the proposal.
#pragma once
#ifdef __GNUC__
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6) // GCC 4.6 is the first GCC to implement nullptr.
const // this is a const object...
class {
public:
template<class T> // convertible to any type
operator T*() const // of null non-member
{ return 0; } // pointer...
template<class C, class T> // or any type of null
operator T C::*() const // member pointer...
{ return 0; }
private:
void operator&() const; // whose address can't be taken
} nullptr = {}; // and whose name is nullptr
#endif
#endif
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