Re: add non-option reordering to in-tree getopt_long

On Thu, Jun 15, 2023 at 02:30:34PM +0900, Kyotaro Horiguchi wrote:
> At Wed, 14 Jun 2023 15:46:08 -0700, Nathan Bossart <nathandbossart@gmail.com> wrote in 
>> Hm.  IIUC modifying the argv pointers on AIX will modify the process title,
>> which could cause 'ps' to temporarily show duplicate/missing arguments
>> during option parsing.  That doesn't seem too terrible, but if pointer
>> assignments aren't atomic, maybe 'ps' could be sent off to another part of
>> memory, which does seem terrible.
> 
> Hmm, the discussion seems to be based on the assumption that argv[0]
> can be safely redirected to a different memory location. If that's the
> case, we can prpbably rearrange the array, even if there's a small
> window where ps might display a confusing command line, right?

If that's the extent of the breakage, then it seems alright to me.  I've
attached a new version of the patch that omits the POSIXLY_CORRECT stuff.

-- 
Nathan Bossart
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