[PATCH] blame: drop strdup of string literal
- From
Jeff King <peff@peff.net>
- Date
- Aug 2, 2016, 10:52 UTC
- Message-ID
- <20160802105252.jyl5x7eanttw2swj@sigill.intra.peff.net>
- In-Reply-To
- <20160614050541.GA9909@sigill.intra.peff.net>
On Tue, Jun 14, 2016 at 01:05:41AM -0400, Jeff King wrote:
Show 18 quoted lines
> On Tue, Jun 14, 2016 at 12:32:15AM -0400, Eric Sunshine wrote:
>
> > > + struct string_list range_list = STRING_LIST_INIT_NODUP;
> >
> > Related to this series, there's an additional "fix" which ought to be
> > made, probably as a separate patch. In particular, in cmd_blame():
> >
> > if (lno && !range_list.nr)
> > string_list_append(&range_list, xstrdup("1"));
> >
> > which supplies a default range ("line 1 through end of file") if -L
> > was not specified. I used xstrdup() on the literal "1" in 58dbfa2
> > (blame: accept multiple -L ranges, 2013-08-06) to be consistent with
> > parse_opt_string_list() which was unconditionally xstrdup'ing the
> > argument (but no longer does as of patch 1/3 of this series).
>
> Yeah, I'd agree that this is a minor bug both before and after the
> series due to the leak. Want to roll a patch on top?Here it is, just to tie up a loose end. I marked you as the author since the hard part was noticing the issue and explaining the history, which you already did above.
-- >8 -- From: Eric Sunshine <sunshine@sunshineco.com> Subject: [PATCH] blame: drop strdup of string literal
This strdup was added as part of 58dbfa2 (blame: accept multiple -L ranges, 2013-08-06) to be consistent with parse_opt_string_list(), which appends to the same list.
But as of 7a7a517 (parse_opt_string_list: stop allocating new strings, 2016-06-13), we should stop using strdup (to match parse_opt_string_list, and for all the reasons described in that commit; namely that it does nothing useful and causes us to leak the memory).
Signed-off-by: Jeff King <peff@peff.net> --- builtin/blame.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/builtin/blame.c b/builtin/blame.c index ab66cde..29bd479 100644 --- a/builtin/blame.c +++ b/builtin/blame.c @@ -2805,7 +2805,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix) lno = prepare_lines(&sb); if (lno && !range_list.nr) - string_list_append(&range_list, xstrdup("1")); + string_list_append(&range_list, "1"); anchor = 1; range_set_init(&ranges, range_list.nr);
-- 2.9.2.670.g42e63de