Re: [PATCH 06/26] get_mail_commit_oid(): avoid resource leak
- From
Stefan Beller <sbeller@google.com>
- Date
- Apr 26, 2017, 21:06 UTC
- Message-ID
- <CAGZ79kbQTbFEtg7N8kpnWDhPmuVyhc-=gey7ca0XobgOwE8Q3w@mail.gmail.com>
- In-Reply-To
- <1a12ba40a2db3925534bd2192ed8e9ab9a87215e.1493237937.git.johannes.schindelin@gmx.de>
On Wed, Apr 26, 2017 at 1:19 PM, Johannes Schindelin <johannes.schindelin@gmx.de> wrote:
Show 34 quoted lines
> When we fail to read, or parse, the file, we still want to close the file > descriptor and release the strbuf. > > Reported via Coverity. > > Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> > --- > builtin/am.c | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/builtin/am.c b/builtin/am.c > index 805f56cec2f..01b700e5e74 100644 > --- a/builtin/am.c > +++ b/builtin/am.c > @@ -1359,15 +1359,16 @@ static int get_mail_commit_oid(struct object_id *commit_id, const char *mail) > struct strbuf sb = STRBUF_INIT; > FILE *fp = xfopen(mail, "r"); > const char *x; > + int ret = 0; > > if (strbuf_getline_lf(&sb, fp)) > - return -1; > + ret = -1; > > - if (!skip_prefix(sb.buf, "From ", &x)) > - return -1; > + if (!ret && !skip_prefix(sb.buf, "From ", &x)) > + ret = -1; > > - if (get_oid_hex(x, commit_id) < 0) > - return -1; > + if (!ret && get_oid_hex(x, commit_id) < 0) > + ret = -1; >
In similar cases of fixing mem leaks, we'd put a label here and make excessive use of goto, instead of setting ret to -1. As "ret" and the commands are short, this is visually just as appealing.
Thanks, Stefan