/usr/share/doc/swig4.0-examples/Examples/test-suite/operator_pointer_ref.i

%module operator_pointer_ref

%{
#if defined(_MSC_VER)
  #pragma warning(disable: 4996) // 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _strdup. See online help for details.
#endif
#include <string.h>
#include <stdlib.h>
%}

%rename(AsCharStarRef) operator char*&;

%inline %{
class MyClass {
public:
    MyClass (const char *s_ = "")
        : s(strdup(s_ ? s_ : ""))
    { }

    ~MyClass () 
    { free(s); }

    operator char*&()
    { return s; }

private:
    char *s;
};
%}

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