For example, the following code is produces undefined behavior, because the program is attempting to perform two simultaneous reads:
For example, the following code is produces undefined behavior, because the program is attempting to perform two simultaneous reads:例如，以下代码会导致未定义行为，因为程序试图同时执行两个读取操作：
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For example, the following code is produces undefined behavior, because the program is attempting to perform two simultaneous reads:例如，以下代码会导致未定义行为，因为程序试图同时执行两个读取操作：