[cffi-devel] [Fwd: RE: [Ecls-list] Foreign variables setting problem]

[Juan Jose Garcia Ripoll]

Hi,

I am forwarding you a question from one of our developers, who is
working on updating CFFI to work with ECL.

His question is how you handle garbage collection and foreign variables.
When setting these variables with, say, a copy of a string
        (setf *var-string* "hello")
a region of memory has to be allocated. But what happens when we set
this variable again afterwards?
	(setf *var-string* "world")

Does CFFI assume that foreign variables become part of the set of roots
to be considered by the garbage collector? This seems a strong
assumption, given the fact that not all variables will contain pointers,
etc.

Or is the user expected to free the first string by herself?

Juanjo
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