Re: [open-cobol-list] Help understanding this behaviour

[Wim Niemans]

To me, this looks like a serious bug in the compiler, because it should perform 
a length check.
When this string is longer, there seem to be no problem and I guess everybody 
will understand that and refer to the distinct picture clauses.
When this string is shorter, however, Cobol should definite issue a error or 
warning, because it otherwise facilitates a security leak.
The only defense that can be used is the mismatch of BY VALUE / BY REFERENCE in 
the the caller and the callee.

Wim



Op 2 sep. 2013, om 05:09 heeft Patrick het volgende geschreven:

> Hi Charles, Hello Paul, Hi Michael
> 
> This all makes sense now. The "problem" is actually on the receiving end 
> where a sort of buffer overflow occurs when the additional memory 
> locations are read due to the mismatched values.
> 
> I suppose in production code, it's not very often that someone would 
> just want to send a string in quotes only anyways. I am probably getting 
> tripped up with quick mock up code.
> 
> This information will help a lot, getting used to the PIC based type 
> system takes a bit of time but I think I am well on my way now.
> 
> Have a great night guys !
> 
> -Patrick
> 
> 
> 
> 
> 
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