Dominique Pellé wrote:
> > $ cat use-free-mem.vim
> > let temp={}
> > redir => temp[0]
> > exe "silent! ls"
> > let temp={}
> > redir => temp[0]
> > exe "silent! ls"
> >
> > $ valgrind --leak-check=yes vim -u NONE -S use-free-mem.vim
> > 2>/tmp/valgrind.log
> >
> > Gives the following error in /tmp/valgrind.log:
> ...snip...
>
> Script to reproduce the bug can be simplified further.
> This is enough to reproduce the bug:
>
> $ cat use-free-mem.vim
>
> let temp={}
> redir => temp[0]
> let temp={}
> redir END
>
> $ valgrind --leak-check=yes vim -u NONE -S use-free-mem.vim
> 2>/tmp/valgrind.log
>
> The deletion of the dictionary, while doing a redir to a member of the
> dictionary triggers the bug. I'm looking at the code but it's not simple
> to understand.
I think the only safe way is to call get_lval() again in
var_redir_stop(). The information gathered in redir_lval may have
become invalid in the mean time.
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