Re: env

[Eric Blake]

> As env exits immediately, I'm having difficulty seeing what problems 
> you're encountering.
> 
> > The difficulty occurs when a LD_PRELOAD shared object uses glib 
> > functions that rely in the stability of environ.
> 
> No function is called before exit(EXIT_SUCCESS).

Not true.  I can see the OP's point - in an LD_PRELOAD setup,
it is possible to override puts() with a version that depends
on its environment; and by traversing with a local variable
instead of environ, you then control whether puts is affected
by the current traversal.  Why you would want to use LD_PRELOAD
to do something that fragile is a different matter, but the code as
is definitely makes system calls with a changed environment,
whereas the proposed patch would avoid that.

-- 
Eric Blake