对处理程序的搜索一直持续到“调用堆栈”，它是应用程序内被调用过程的序列。
The search for a handler continues up the call stack, which is the series of procedures called within the application.
该算法通过计算表达式在指向图中的左值，得到所有可能被修改的内存位置，从而计算出所有可能在被调用过程中被修改的表达式。
Through computing the lvalue of an expression in the points-to graph, we get all the modified memory locations. Thus we can get all the expressions that may be modified in the called procedure.
在异步调用过程中，当目标组件发生系统异常时，消息会回滚到传入目的地，并被重新提交。
When a system exception occurs at the target component during an asynchronous invocation, the message is rolled back to the incoming destination and redelivered.
非易失寄存器需要在整个函数调用过程中保留其值，并且一旦使用，则必须由被调用方保存。
Nonvolatile registers are required to retain their values across a function call and must be saved by the callee if used.
非易失寄存器需要在整个函数调用过程中保留其值，并且一旦使用，则必须由被调用方保存。
Nonvolatile registers are required to retain their values across a function call and must be saved by the callee if used.
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