diff options
| author |  Derrick Stolee <dstolee@microsoft.com> | 2021-01-08 02:30:46 +0000 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2021-01-07 19:12:02 -0800 |
| commit | 6c62f015520eaecd94d93a7e8339b190f2c24bc6 (patch) | |
| tree | 714efa433e924b872cac3da50dad118a2000fc4b | |
| parent | Git 2.30 (diff) | |
| download | tgif-6c62f015520eaecd94d93a7e8339b190f2c24bc6.tar.xz | |
for-each-repo: do nothing on empty config
'git for-each-repo --config=X' should return success without calling any
subcommands when the config key 'X' has no value. The current
implementation instead segfaults.
A user could run into this issue if they used 'git maintenance start' to
initialize their cron schedule using 'git for-each-repo
--config=maintenance.repo ...' but then using 'git maintenance
unregister' to remove the config option. (Note: 'git maintenance stop'
would remove the config _and_ remove the cron schedule.)
Add a simple test to ensure this works. Use 'git help --no-such-option'
as the potential subcommand to ensure that we will hit a failure if the
subcommand is ever run.
Reported-by: Andreas Bühmann <dev@uuml.de>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | builtin/for-each-repo.c | 7 | ||||
| -rwxr-xr-x | t/t0068-for-each-repo.sh | 6 |
2 files changed, 13 insertions, 0 deletions
diff --git a/builtin/for-each-repo.c b/builtin/for-each-repo.c index 5bba623ff1..52be64a437 100644 --- a/builtin/for-each-repo.c +++ b/builtin/for-each-repo.c @@ -51,6 +51,13 @@ int cmd_for_each_repo(int argc, const char **argv, const char *prefix) values = repo_config_get_value_multi(the_repository, config_key); + /* + * Do nothing on an empty list, which is equivalent to the case + * where the config variable does not exist at all. + */ + if (!values) + return 0; + for (i = 0; !result && i < values->nr; i++) result = run_command_on_repo(values->items[i].string, &args); diff --git a/t/t0068-for-each-repo.sh b/t/t0068-for-each-repo.sh index 136b4ec839..4675e85251 100755 --- a/t/t0068-for-each-repo.sh +++ b/t/t0068-for-each-repo.sh @@ -27,4 +27,10 @@ test_expect_success 'run based on configured value' ' grep again message ' +test_expect_success 'do nothing on empty config' ' + # the whole thing would fail if for-each-ref iterated even + # once, because "git help --no-such-option" would fail + git for-each-repo --config=bogus.config -- help --no-such-option +' + test_done |