git-commit-vandalism/t/t4212-log-corrupt.sh
Ævar Arnfjörð Bjarmason 7a98d9ab00 revisions API: have release_revisions() release "cmdline"
Extend the the release_revisions() function so that it frees the
"cmdline" in the "struct rev_info". This in combination with a
preceding change to free "commits" and "mailmap" means that we can
whitelist another test under "TEST_PASSES_SANITIZE_LEAK=true".

There was a proposal in [1] to do away with xstrdup()-ing this
add_rev_cmdline(), perhaps that would be worthwhile, but for now let's
just free() it.

We could also make that a "char *" in "struct rev_cmdline_entry"
itself, but since we own it let's expose it as a constant to outside
callers. I proposed that in [2] but have since changed my mind. See
14d30cdfc0 (ref-filter: fix memory leak in `free_array_item()`,
2019-07-10), c514c62a4f (checkout: fix leak of non-existent branch
names, 2020-08-14) and other log history hits for "free((char *)" for
prior art.

This includes the tests we had false-positive passes on before my
6798b08e84 (perl Git.pm: don't ignore signalled failure in
_cmd_close(), 2022-02-01), now they pass for real.

Since there are 66 tests matching t/t[0-9]*git-svn*.sh it's easier to
list those that don't pass than to touch most of those 66. So let's
introduce a "TEST_FAILS_SANITIZE_LEAK=true", which if set in the tests
won't cause lib-git-svn.sh to set "TEST_PASSES_SANITIZE_LEAK=true.

This change also marks all the tests that we removed
"TEST_FAILS_SANITIZE_LEAK=true" from in an earlier commit due to
removing the UNLEAK() from cmd_format_patch(), we can now assert that
its API use doesn't leak any "struct rev_info" memory.

This change also made commit "t5503-tagfollow.sh" pass on current
master, but that would regress when combined with
ps/fetch-atomic-fixup's de004e848a (t5503: simplify setup of test
which exercises failure of backfill, 2022-03-03) (through no fault of
that topic, that change started using "git clone" in the test, which
has an outstanding leak). Let's leave that test out for now to avoid
in-flight semantic conflicts.

1. https://lore.kernel.org/git/YUj%2FgFRh6pwrZalY@carlos-mbp.lan/
2. https://lore.kernel.org/git/87o88obkb1.fsf@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-13 23:56:09 -07:00

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#!/bin/sh
test_description='git log with invalid commit headers'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'setup' '
test_commit foo &&
git cat-file commit HEAD |
sed "/^author /s/>/>-<>/" >broken_email.commit &&
git hash-object -w -t commit broken_email.commit >broken_email.hash &&
git update-ref refs/heads/broken_email $(cat broken_email.hash)
'
test_expect_success 'fsck notices broken commit' '
test_must_fail git fsck 2>actual &&
test_i18ngrep invalid.author actual
'
test_expect_success 'git log with broken author email' '
{
echo commit $(cat broken_email.hash) &&
echo "Author: A U Thor <author@example.com>" &&
echo "Date: Thu Apr 7 15:13:13 2005 -0700" &&
echo &&
echo " foo"
} >expect.out &&
git log broken_email >actual.out 2>actual.err &&
test_cmp expect.out actual.out &&
test_must_be_empty actual.err
'
test_expect_success 'git log --format with broken author email' '
echo "A U Thor+author@example.com+Thu Apr 7 15:13:13 2005 -0700" >expect.out &&
git log --format="%an+%ae+%ad" broken_email >actual.out 2>actual.err &&
test_cmp expect.out actual.out &&
test_must_be_empty actual.err
'
munge_author_date () {
git cat-file commit "$1" >commit.orig &&
sed "s/^\(author .*>\) [0-9]*/\1 $2/" <commit.orig >commit.munge &&
git hash-object -w -t commit commit.munge
}
test_expect_success 'unparsable dates produce sentinel value' '
commit=$(munge_author_date HEAD totally_bogus) &&
echo "Date: Thu Jan 1 00:00:00 1970 +0000" >expect &&
git log -1 $commit >actual.full &&
grep Date <actual.full >actual &&
test_cmp expect actual
'
test_expect_success 'unparsable dates produce sentinel value (%ad)' '
commit=$(munge_author_date HEAD totally_bogus) &&
echo >expect &&
git log -1 --format=%ad $commit >actual &&
test_cmp expect actual
'
# date is 2^64 + 1
test_expect_success 'date parser recognizes integer overflow' '
commit=$(munge_author_date HEAD 18446744073709551617) &&
echo "Thu Jan 1 00:00:00 1970 +0000" >expect &&
git log -1 --format=%ad $commit >actual &&
test_cmp expect actual
'
# date is 2^64 - 2
test_expect_success 'date parser recognizes time_t overflow' '
commit=$(munge_author_date HEAD 18446744073709551614) &&
echo "Thu Jan 1 00:00:00 1970 +0000" >expect &&
git log -1 --format=%ad $commit >actual &&
test_cmp expect actual
'
# date is within 2^63-1, but enough to choke glibc's gmtime
test_expect_success 'absurdly far-in-future date' '
commit=$(munge_author_date HEAD 999999999999999999) &&
git log -1 --format=%ad $commit
'
test_done