Bison, C++ and shared_ptr<>

Hi all,


Lately I've been dealing with some wierd memory leaks reported by
valgrind on my bison generated parser. One of the things I had
difficulty with when I designed the parser is that I cannot have types
with constructors on the %union. Which is definitely a pity... One of
the things it would be great to have there would be a pair<int, int>,
which is impossible so I have a pair<int,int>* but that makes me
allocate and deallocate several times with the possibility of memory
leak (like the one that's happening). I've been reading about
shared_ptr<> which would be great on the case but it seems %union won't
let me have a shared_ptr<> as a member. shared_ptr<>* seems awkward and
meaningless so what I would really like to know is if there is any
trick to make bison work nicely with 'types with constructors' or
shared_ptr<>. :)


Thanks,


Paulo Matos

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