#include <stdlib.h>
#include <stdio.h>

class Foo
{
public:
    void echo() & { printf("lvalue call\n");}
    void echo() && { printf("rvalue call\n");}
};

int main(int argc, char* argv[])
{
    Foo f;
    f.echo();

    printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");

    Foo().echo();

    return 0;
}

http://cpp.sh/563t5
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