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| author | Pranit Bauva <pranit.bauva@gmail.com> | 2020-02-17 09:40:35 +0100 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2020-02-19 09:37:14 -0800 |
| commit | e8e3ce67185fd493a07d84a5ce21b469701f8f64 (patch) | |
| tree | a6ce8f7ffe02d587bd8198af5bdcddf56c5cb0c0 /bisect.c | |
| parent | ce58b5d8b128568e9b4f37703377cbc22eaf00f5 (diff) | |
bisect: libify `bisect_checkout`
Since we want to get rid of git-bisect.sh, it would be necessary to convert those exit() calls to return statements so that errors can be reported. Emulate try catch in C by converting `exit(<positive-value>)` to `return <negative-value>`. Follow POSIX conventions to return <negative-value> to indicate error. Turn `exit()` to `return` calls in `bisect_checkout()`. Changes related to return values have no bad side effects on the code that calls `bisect_checkout()`. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com> Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com> Signed-off-by: Miriam Rubio <mirucam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'bisect.c')
| -rw-r--r-- | bisect.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/bisect.c b/bisect.c index 85bda3500b..f6582ddfed 100644 --- a/bisect.c +++ b/bisect.c @@ -704,9 +704,10 @@ static int is_expected_rev(const struct object_id *oid) return res; } -static int bisect_checkout(const struct object_id *bisect_rev, int no_checkout) +static enum bisect_error bisect_checkout(const struct object_id *bisect_rev, int no_checkout) { char bisect_rev_hex[GIT_MAX_HEXSZ + 1]; + enum bisect_error res = BISECT_OK; memcpy(bisect_rev_hex, oid_to_hex(bisect_rev), the_hash_algo->hexsz + 1); update_ref(NULL, "BISECT_EXPECTED_REV", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR); @@ -716,14 +717,24 @@ static int bisect_checkout(const struct object_id *bisect_rev, int no_checkout) update_ref(NULL, "BISECT_HEAD", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR); } else { - int res; res = run_command_v_opt(argv_checkout, RUN_GIT_CMD); if (res) - exit(res); + /* + * Errors in `run_command()` itself, signaled by res < 0, + * and errors in the child process, signaled by res > 0 + * can both be treated as regular BISECT_FAILURE (-1). + */ + return -abs(res); } argv_show_branch[1] = bisect_rev_hex; - return run_command_v_opt(argv_show_branch, RUN_GIT_CMD); + res = run_command_v_opt(argv_show_branch, RUN_GIT_CMD); + /* + * Errors in `run_command()` itself, signaled by res < 0, + * and errors in the child process, signaled by res > 0 + * can both be treated as regular BISECT_FAILURE (-1). + */ + return -abs(res); } static struct commit *get_commit_reference(struct repository *r, |