Re: [q-lang-users] Libqint and the stability of qexps

[Albert G. <Dr....@t-...>]

John Cowan wrote:
> Is it necessary to call qnewref() on each newly constructed qexp, or only
> on the top-level qexp?

Normally the toplevels should be enough, since the subexprs will per 
definition be referred to by other exprs and hence have a nonzero 
refcount anyway. But if you keep a pointer to, say, both Y = F X and X, 
then you should count a ref to both X and Y unless you can be sure that 
X and Y will always be thrown away at the same time. Otherwise just make 
it a habit to do a qnewref whenever you assign an expr pointer to a C 
variable, and make sure that you have a qfreeref after the last 
reference to the C variable (e.g., at the end of the block for an 
automatic variable).

-- 
Dr. Albert Gr"af
Dept. of Music-Informatics, University of Mainz, Germany
Email:  Dr....@t-..., ag...@mu...
WWW:    http://www.musikinformatik.uni-mainz.de/ag