[GRASS-dev] Re: ctypes problem with Vect_open_old

[Glynn Clements]

Martin Landa wrote:

> right, just facing to the strange problem, any idea?

> p = line_pnts()
> Vect_append_point(byref(p), 1, 1, 0)

You're passing an uninitialised line_pnts structure (i.e. with its
fields containing garbage), and probably trashing the heap. Use
Vect_new_line_struct() to allocate an empty line_pnts object.

-- 
Glynn Clements <glynn at gclements.plus.com>