diff options
| author | Patrick Steinhardt <ps@pks.im> | 2024-08-14 08:52:14 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2024-08-14 10:07:58 -0700 |
| commit | 648abbe22d55a6004bf6dafa7c0ed209572c9fe9 (patch) | |
| tree | b95fe9852fc035c286edc275095d41869c7ffdf2 /builtin/commit.c | |
| parent | 5f6519b62c636edfff4e1ffd6591917a53616b42 (diff) | |
config: fix leaking comment character config
When the comment line character has been specified multiple times in the
configuration, then `git_default_core_config()` will cause a memory leak
because it unconditionally copies the string into `comment_line_str`
without free'ing the previous value. In fact, it can't easily free the
value in the first place because it may contain a string constant.
Refactor the code such that we track allocated comment character strings
via a separate non-constant variable `comment_line_str_to_free`. Adapt
sites that set `comment_line_str` to set both and free the old value
that was stored in `comment_line_str_to_free`.
This memory leak is being hit in t3404. As there are still other memory
leaks in that file we cannot yet mark it as passing with leak checking
enabled.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/commit.c')
| -rw-r--r-- | builtin/commit.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/builtin/commit.c b/builtin/commit.c index 66427ba82d..b2033c4887 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -684,7 +684,9 @@ static void adjust_comment_line_char(const struct strbuf *sb) const char *p; if (!memchr(sb->buf, candidates[0], sb->len)) { - comment_line_str = xstrfmt("%c", candidates[0]); + free(comment_line_str_to_free); + comment_line_str = comment_line_str_to_free = + xstrfmt("%c", candidates[0]); return; } @@ -705,7 +707,8 @@ static void adjust_comment_line_char(const struct strbuf *sb) if (!*p) die(_("unable to select a comment character that is not used\n" "in the current commit message")); - comment_line_str = xstrfmt("%c", *p); + free(comment_line_str_to_free); + comment_line_str = comment_line_str_to_free = xstrfmt("%c", *p); } static void prepare_amend_commit(struct commit *commit, struct strbuf *sb, |