Re: [PATCH 06/26] get_mail_commit_oid(): avoid resource leak
From: Stefan Beller <hidden>
Date: 2017-04-26 21:06:16
On Wed, Apr 26, 2017 at 1:19 PM, Johannes Schindelin [off-list ref] wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- 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