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C MP+onceassign+derefonce.litmus
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{
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y=z;
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z=0;
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}
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P0(int *x, int **y)
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{
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WRITE_ONCE(*x, 1);
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rcu_assign_pointer(*y, x);
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}
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P1(int *x, int **y)
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{
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int *r0;
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int r1;
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rcu_read_lock();
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r0 = rcu_dereference(*y);
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r1 = READ_ONCE(*r0);
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rcu_read_unlock();
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}
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exists (1:r0=x /\ 1:r1=0)
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