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

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

What possible errors are avoided by the use of the memory barriers?

Thread 1 Thread 2 a3 mb ) b4 cb rmb dai

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