View source for cpp/atomic/kill dependency

=====file1.cpp:=====
{{source|1=
struct Foo
{
    int* a;
    int* b;
};

std::atomic<Foo*> foo_head[10];
int foo_array[10][10];

// consume operation starts a dependency chain, which escapes this function
[[carries_dependency]] Foo* f(int i)
{
    return foo_head[i].load(memory_order_consume);
}

// the dependency chain enters this function through the right parameter and is
// killed before the function ends (so no extra acquire operation takes place)
int g(int* x, int* y [[carries_dependency]])
{
    return std::kill_dependency(foo_array[*x][*y]);
}
}}