Re: How to use read-only variables?

[Hubert <herrdoktor@fumanchu.com>]

Here is my guess, and I want to stress that I am by no means an Ada 
expert. So maybe it's completely wrong but here it goes anyway:

When you call that function with the IN OUT parameter, you probably make 
the mistake of thinking this is like a C++ reference, but I would think 
that the variable you use for the Access attribute is indeed a local 
one. Perhaps the compiler copies it when you call the function and then 
copies it again back when you leave the function, thus

rec.nv'Access;

would refer to a local object inside the function and the pointer would 
become invalid when you leave the function.

My guess, I would be glad if it was right :)


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