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From: "H. Peter Anvin" <hpa@zytor.com>
To: Petr Baudis <pasky@suse.cz>
Cc: Junio C Hamano <junkio@cox.net>,
	Dmitry Torokhov <dtor_core@ameritech.net>,
	git@vger.kernel.org
Subject: Re: [PATCH] Fix git-init-db creating crap directories (zeroth try)
Date: Mon, 19 Sep 2005 17:42:47 -0700	[thread overview]
Message-ID: <432F5B07.2060803@zytor.com> (raw)
In-Reply-To: <20050920001949.GL18320@pasky.or.cz>

Petr Baudis wrote:
>>>
>>>-	memcpy(path, git_dir, len);
>>>+	memcpy(path, git_dir, len-1);
>>>+	path[len] = 0;
>>>	copy_templates_1(path, len,
>>
>>Wrong!  You're not initializing path[len-1]!
> 
> 
> Oops, sorry. That's what you get when you want to make things marginally
> better. ;-) We indeed want to pass copy_templates_1() the trailing slash
> as well.
> 
> Let's just settle with the original patch then.
> 

But if len is the index of the '/', then you're not.

Think about it: the memcpy(path, git_dir, len) copies bytes 0..len-1. 
Thus you need to use path[len] = 0 to terminate.

If you want to copy len-1 characters, then you need to use path[len-1] = 0.

	-hpa

  reply	other threads:[~2005-09-20  0:43 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-18  2:41 Garbage in .git directories??? Dmitry Torokhov
2005-09-18 17:10 ` Linus Torvalds
2005-09-18 17:54   ` Dmitry Torokhov
2005-09-19  4:33     ` Dmitry Torokhov
2005-09-19  5:21       ` Junio C Hamano
2005-09-19 14:51       ` Linus Torvalds
2005-09-19 15:00         ` Dmitry Torokhov
2005-09-20  0:09         ` Dmitry Torokhov
2005-09-20  0:45           ` Linus Torvalds
2005-09-20  3:37             ` Dmitry Torokhov
2005-09-19 19:10 ` H. Peter Anvin
2005-09-19 19:44   ` Petr Baudis
2005-09-19 23:16     ` H. Peter Anvin
2005-09-19 23:40       ` Petr Baudis
2005-09-19 23:58         ` H. Peter Anvin
2005-09-20  0:07           ` [PATCH] Fix git-init-db creating crap directories Petr Baudis
2005-09-20  0:09             ` H. Peter Anvin
2005-09-20  0:19               ` [PATCH] Fix git-init-db creating crap directories (zeroth try) Petr Baudis
2005-09-20  0:42                 ` H. Peter Anvin [this message]
2005-09-20  1:51                   ` Petr Baudis
2005-09-20  2:04                     ` Junio C Hamano
2005-09-20  3:27                     ` H. Peter Anvin
2005-09-19 21:58   ` Garbage in .git directories??? Horst von Brand

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