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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Pierre Habouzit <madcoder@debian.org>
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Git Mailing List <git@vger.kernel.org>
Subject: Re: [RFC] Re: Convert 'git blame' to parse_options()
Date: Tue, 24 Jun 2008 10:05:50 -0700 (PDT)	[thread overview]
Message-ID: <alpine.LFD.1.10.0806241001140.2926@woody.linux-foundation.org> (raw)
In-Reply-To: <20080624082447.GB24357@artemis.madism.org>



On Tue, 24 Jun 2008, Pierre Habouzit wrote:
> 
>   Actually this doesn't work because it may point into the strbuf that
> will be invalidated later. Our sole option here is to leak some memory I
> fear.

I think leaking memory is ok (it's obviously going to be bounded by the 
size of the arguments you pass into a program), but I also think you can 
just change the option strings in place.

Yeah, I know - it's impolite, and we even marked things "const char", but 
"const" in C is just a politeness thing, we can just choose to have a 
function with a big comment that changes the string anyway. We'll have to 
make sure that the few places that actually create argument strings by 
hand (ie not from the ones supplied by a real "execve()") not do them so 
that they need splitting (but no current ones would need to, obviously, 
since splitting the argumens isn't even supported yet).

Or, if people hate that, just leak a few malloc'ed areas. That's arguably 
the more straightforward way.

			Linus

  reply	other threads:[~2008-06-24 17:09 UTC|newest]

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-23  5:15 Convert 'git blame' to parse_options() Linus Torvalds
2008-06-23  6:35 ` Junio C Hamano
2008-06-23 12:28   ` Johannes Schindelin
2008-06-23  8:22 ` [RFC] " Pierre Habouzit
2008-06-23 12:26   ` Johannes Schindelin
2008-06-23 15:53     ` Pierre Habouzit
2008-06-23 16:25       ` Johannes Schindelin
2008-06-23 16:25     ` Linus Torvalds
2008-06-23 16:49       ` Jeff King
2008-06-23 17:06         ` Linus Torvalds
2008-06-23 17:15           ` Jeff King
2008-06-23 17:32             ` Linus Torvalds
2008-06-23 18:15               ` Jeff King
2008-06-23 18:36                 ` Linus Torvalds
2008-06-23 18:20               ` Linus Torvalds
2008-06-23 18:33                 ` Jeff King
2008-06-23 18:47                   ` Linus Torvalds
2008-06-23 19:16                     ` Linus Torvalds
2008-06-23 21:09                       ` Pierre Habouzit
2008-06-23 21:11                         ` [PATCH] parse-opt: have parse_options_{start,end} Pierre Habouzit
2008-06-23 21:11                           ` [PATCH] parse-opt: Export a non NORETURN usage dumper Pierre Habouzit
2008-06-23 21:11                             ` [PATCH] parse-opt: create parse_options_step Pierre Habouzit
2008-06-23 21:11                               ` [PATCH] parse-opt: do not pring errors on unknown options, return -2 intead Pierre Habouzit
2008-06-23 21:11                                 ` [PATCH] parse-opt: fake short strings for callers to believe in Pierre Habouzit
2008-06-23 22:08                                 ` [PATCH] parse-opt: do not pring errors on unknown options, return -2 intead Junio C Hamano
2008-06-23 22:13                                   ` Pierre Habouzit
2008-06-23 21:23                         ` [RFC] Re: Convert 'git blame' to parse_options() Pierre Habouzit
2008-06-23 21:23                         ` Junio C Hamano
2008-06-23 21:28                           ` Pierre Habouzit
2008-06-23 21:26                         ` Linus Torvalds
2008-06-23 21:41                           ` Linus Torvalds
2008-06-23 21:47                           ` Pierre Habouzit
2008-06-23 22:11                           ` Junio C Hamano
2008-06-23 22:24                             ` Pierre Habouzit
2008-06-23 22:36                               ` Pierre Habouzit
2008-06-23 22:38                               ` Junio C Hamano
2008-06-23 23:31                                 ` Pierre Habouzit
2008-06-23 23:40                                   ` Linus Torvalds
2008-06-23 23:51                                   ` Junio C Hamano
2008-06-24  7:50                                     ` Pierre Habouzit
2008-06-24  1:27                                   ` Jeff King
2008-06-23 19:53                     ` Jeff King
2008-06-23 20:04                       ` Pierre Habouzit
2008-06-23 20:12                       ` Linus Torvalds
2008-06-24  5:35                         ` Jeff King
2008-06-24 16:59                           ` Linus Torvalds
2008-06-24 17:13                             ` Johannes Schindelin
2008-06-24 17:34                             ` Jeff King
2008-06-24 17:44                               ` Linus Torvalds
2008-06-24 19:46                                 ` Jeff King
2008-06-24  0:30                 ` Junio C Hamano
2008-06-24  8:24                   ` Pierre Habouzit
2008-06-24 17:05                     ` Linus Torvalds [this message]
2008-06-24 19:30                       ` Pierre Habouzit
2008-06-24 19:43                         ` Pierre Habouzit
2008-06-25  6:09                         ` Johannes Sixt
2008-06-23 17:04       ` Johannes Schindelin
2008-06-23 17:21         ` Linus Torvalds
2008-06-23 18:39           ` Johannes Schindelin
2008-06-23 17:26         ` Jeff King
2008-06-23 18:41           ` Johannes Schindelin
2008-06-23 19:24       ` Pierre Habouzit
2008-06-23 16:11   ` Linus Torvalds
2008-06-24  9:12 ` Making parse-opt incremental, reworked series Pierre Habouzit
2008-06-24  9:12   ` [PATCH 1/7] parse-opt: have parse_options_{start,end} Pierre Habouzit
2008-06-24  9:12     ` [PATCH 2/7] parse-opt: Export a non NORETURN usage dumper Pierre Habouzit
2008-06-24  9:12       ` [PATCH 3/7] parse-opt: create parse_options_step Pierre Habouzit
2008-06-24  9:12         ` [PATCH 4/7] parse-opt: do not pring errors on unknown options, return -2 intead Pierre Habouzit
2008-06-24  9:12           ` [PATCH 5/7] parse-opt: fake short strings for callers to believe in Pierre Habouzit
2008-06-24  9:12             ` [PATCH 6/7] parse-opt: add PARSE_OPT_KEEP_ARGV0 parser option Pierre Habouzit
2008-06-24  9:12               ` [PATCH 7/7] Migrate git-blame to parse-option partially Pierre Habouzit
2008-06-24 10:03               ` [PATCH 6/7] parse-opt: add PARSE_OPT_KEEP_ARGV0 parser option Pierre Habouzit
2008-06-24 17:18               ` Linus Torvalds
2008-06-24 19:27                 ` Pierre Habouzit
2008-06-24 20:55                 ` Pierre Habouzit
2008-06-24 17:20             ` [PATCH 5/7] parse-opt: fake short strings for callers to believe in Linus Torvalds
2008-06-24 19:26               ` Pierre Habouzit
2008-06-25 15:07                 ` Andreas Ericsson
2008-06-24 20:58             ` [REPLACEMENT PATCH] " Pierre Habouzit
2008-06-26  8:35               ` Pierre Habouzit
2008-06-26  8:40                 ` Junio C Hamano
2008-06-26  9:37                   ` Pierre Habouzit

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