Re: res_nsearch memory leaks

[Michael B Allen <mba2000@ioplex.com>]

On Mon, 5 Feb 2007 13:29:02 +0100
Love Hörnquist Åstrand <lha@kth.se> wrote:

> 4 feb 2007 kl. 21.37 skrev Michael B Allen:
> 
> > Hi,
> >
> > I've been doing some testing with valgrind. It looks like the  
> > res_nsearch
> > API is leaking memory on my system. From doing a little Googling this
> > is apparently because some OSs do not supply the required res_ndestroy
> > function? Does anyone have further info?
> 
> When I look at theis the last time I thougth it happened on platforms
> with res_ndestroy too ?
> 
> > Also, it seems the below is inconsistent. If res_ndestroy is called in
> > the error condition should it not be called outside the do/while?
> 
> Yes, try 1.57 of lib/roken/resolve.c

Glibc doesn't have res_ndestroy. I applied the change anyway but of
course the leak persisted.

I sent a message to the libc-alpha list with a minimalistic program
and valgrind output. Perhaps they can shed some light on this for glibc
systems.

Mike

-- 
Michael B Allen
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