From: KOSAKI Motohiro <kosaki.motohiro@...>
Date: 2011-03-13T22:33:39+09:00
Subject: [ruby-core:35492] Re: /proc/$PID/environ in Linux

> @@ -1810,6 +1822,14 @@ set_arg0(VALUE val, ID id)
> � � setproctitle("%.*s", (int)i, s);
> �#else
>
> +# ifdef USE_ENVSPACE_FOR_ARG0
> + � �if (envspace_capa > 0 && (size_t)i > origarg.len - origarg.argc) {
> + � � � move_environ();
> + � � � origarg.len += envspace_capa;
> + � � � envspace_capa = 0;
> + � �}
> +# endif

No. this is thread unsafe. therefore it is MVM unsafe.
I don't want to increase MVM unsafe code anymore.

Please simply do lazy zero fill, not environemt moving itself.

Thanks.