c299468bd7
split_symref_update() receives a string-pointer `referent` and adds it to the list of `affected_refnames`. The list simply holds on to the pointers it is given, it does not copy the strings and it does not ever free them. The `referent` string in split_symref_update() belongs to a string buffer in the caller. After we return, the string will be leaked. In the next patch, we want to properly release the string buffer in the caller, but we can't safely do so until we've made sure that `affected_refnames` will not be holding on to a pointer to the string. We could configure the list to handle its own resources, but it would mean some alloc/free-churning. The list is already handling other strings (through other code paths) which we do not need to worry about, and we'd be memory-churning those strings too, completely unnecessary. Observe that split_symref_update() creates a `new_update`-object through ref_transaction_add_update(), after which `new_update->refname` is a copy of `referent`. The difference is, this copy will be freed, and it will be freed *after* `affected_refnames` has been cleared. Rearrange the handling of `referent`, so that we don't add it directly to `affected_refnames`. Instead, first just check whether `referent` exists in the string list, and later add `new_update->refname`. Helped-by: Michael Haggerty <mhagger@alum.mit.edu> Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Martin Ågren <martin.agren@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
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| builtin | ||
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README.md
Git - fast, scalable, distributed revision control system
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.
See Documentation/gittutorial.txt to get started, then see
Documentation/giteveryday.txt for a useful minimum set of commands, and
Documentation/git-.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with man gittutorial or git help tutorial, and the
documentation of each command with man git-<commandname> or git help <commandname>.
CVS users may also want to read Documentation/gitcvs-migration.txt
(man gitcvs-migration or git help cvs-migration if git is
installed).
The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.
The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.
The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):
- random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
- stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
- "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
- "goddamn idiotic truckload of sh*t": when it breaks