Re: add non-option reordering to in-tree getopt_long - Mailing list pgsql-hackers

From Nathan Bossart
Subject Re: add non-option reordering to in-tree getopt_long
Date
Msg-id 20230614224608.GA625054@nathanxps13
Whole thread Raw
In response to Re: add non-option reordering to in-tree getopt_long  (Noah Misch <noah@leadboat.com>)
Responses Re: add non-option reordering to in-tree getopt_long
List pgsql-hackers
On Wed, Jun 14, 2023 at 03:11:54PM -0700, Noah Misch wrote:
> Here's some output from this program (on AIX 7.1, same output when compiled
> 32-bit or 64-bit):
> 
> $ ./a.out a b c d e f
> f e d c b a ./a.out

Thanks again.

> Interesting discussion here, too:
> https://github.com/libuv/libuv/pull/1187

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.

-- 
Nathan Bossart
Amazon Web Services: https://aws.amazon.com



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