| 摘要 |
PURPOSE:To avoid such a case where the memory resources are unnecessarily occupied when a program is executed and to improve the availability and processing capacity of memory, by checking the presence or absence of reference to the data name and inhibiting the output of the area for data name requiring no real area to an object in a memory allocating system. CONSTITUTION:For the source program supplied from an input means 1, the data definition deciding part 21 of a data definition deciding means 2 decides whether the data is defined or not. If the definition of data is confirmed, a data name table production means 3 is called out by a data name table reference check means 5 is called out by a data name reference check means calling processor 23 if the definition of data is not defined.
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