How does xcheck operator affect on stack?

[burya]

Hi there.

According to "Red Book", xcheck operator tests whether the operand has the executable or literal attribute. But, it seems to me xcheck operator has an influence on ps stack. I have following example:

operand exec

where operand is dynamically builded executable object.

In some cases, operand execution causes to stack crashing, but if I will use xcheck before exec, means

operand xcheck pop exec

operand execution will finish good.

My question is:
Do you know something about xcheck influence, or similiar behavior is my particular case?

Thank you,
Michael

 

[tgreer]

It will consume the operand from the stack.

So:

operand xcheck pop exec

would leave nothing for "exec" to do. xcheck would consume operand, and pop would consume the boolean.



Thomas D. Greer

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[burya]

Thank you for your answer.
It had to me to look on my problem from another point.

Michael