diff options
| author | Ævar Arnfjörð Bjarmason <avarab@gmail.com> | 2021-04-12 20:15:20 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2021-05-11 06:47:31 +0300 |
| commit | 2e197a759221921d42c5e94ae3f4897cd456ebb4 (patch) | |
| tree | 967fd6f168b04e81be588b6dbfa083aaaad0adea | |
| parent | 03c1f14acf5169d8e6c06a60c28ee5a6cfb9fd54 (diff) | |
pickaxe: assert that we must have a needle under -G or -S
Assert early in diffcore_pickaxe() that we've got a needle to work
with under -G and -S.
This code is redundant to the check -G and -S get from
parse-options.c's get_arg(), which I'm adding a test for.
This check dates back to e1b161161d (diffcore-pickaxe: fix infinite
loop on zero-length needle, 2007-01-25) when "git log -S" could send
this code into an infinite loop.
It was then later refactored in 8fa4b09fb1 (pickaxe: hoist empty
needle check, 2012-10-28) into its current form, but it seemingly
wasn't noticed that in the meantime a move to the parse-options.c API
in dea007fb4c (diff: parse separate options like -S foo, 2010-08-05)
had made it redundant.
Let's retain some of the paranoia here with a BUG(), but there's no
need to be checking this in the pickaxe_match() inner loop.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | diffcore-pickaxe.c | 6 | ||||
| -rwxr-xr-x | t/t4209-log-pickaxe.sh | 6 |
2 files changed, 9 insertions, 3 deletions
diff --git a/diffcore-pickaxe.c b/diffcore-pickaxe.c index 953b6ec1b4..88b6ca840f 100644 --- a/diffcore-pickaxe.c +++ b/diffcore-pickaxe.c @@ -132,9 +132,6 @@ static int pickaxe_match(struct diff_filepair *p, struct diff_options *o, oidset_contains(o->objfind, &p->two->oid)); } - if (!o->pickaxe[0]) - return 0; - if (o->flags.allow_textconv) { textconv_one = get_textconv(o->repo, p->one); textconv_two = get_textconv(o->repo, p->two); @@ -230,6 +227,9 @@ void diffcore_pickaxe(struct diff_options *o) kwset_t kws = NULL; pickaxe_fn fn; + if (opts & ~DIFF_PICKAXE_KIND_OBJFIND && + (!needle || !*needle)) + BUG("should have needle under -G or -S"); if (opts & (DIFF_PICKAXE_REGEX | DIFF_PICKAXE_KIND_G)) { int cflags = REG_EXTENDED | REG_NEWLINE; if (o->pickaxe_opts & DIFF_PICKAXE_IGNORE_CASE) diff --git a/t/t4209-log-pickaxe.sh b/t/t4209-log-pickaxe.sh index 16166ffd3e..3f9aad0fdb 100755 --- a/t/t4209-log-pickaxe.sh +++ b/t/t4209-log-pickaxe.sh @@ -56,6 +56,12 @@ test_expect_success setup ' ' test_expect_success 'usage' ' + test_expect_code 129 git log -S 2>err && + test_i18ngrep "switch.*requires a value" err && + + test_expect_code 129 git log -G 2>err && + test_i18ngrep "switch.*requires a value" err && + test_expect_code 128 git log -Gregex -Sstring 2>err && grep "mutually exclusive" err && |