Question: The two variables a and b have initial values of 1 and 2 , respectively. The following code is for a Linux system: Thread 1

The two variables a and b have initial values of 1 and 2, respectively. The following code is for a Linux system: Thread 1 Thread 2 a =3; mb(); b =4; c = b; rmb(); d = a; What possible errors are avoided by the use of the memory barriers?

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