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| author | Brandon Casey <drafnel@gmail.com> | 2010-09-27 12:29:45 -0500 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-09-27 10:39:54 -0700 |
| commit | 6355e505bacf0a12a5de77bcd0c1198e74ad340b (patch) | |
| tree | c1e13fda5177484fa34872ff4dc9cba2245f5df3 | |
| parent | 9027fa9eb7df606b6658dd48a40bb993ce222ddd (diff) | |
| download | git-6355e505bacf0a12a5de77bcd0c1198e74ad340b.tar.gz git-6355e505bacf0a12a5de77bcd0c1198e74ad340b.tar.xz | |
builtin/revert.c: don't dereference a NULL pointer
cherry-pick will segfault when transplanting a root commit if the --ff
option is used. This happens because the "parent" pointer is set to NULL
when the commit being cherry-picked has no parents. Later, when "parent"
is dereferenced, the cherry-pick segfaults.
Fix this by checking whether "parent" is NULL before dereferencing it and
add a test for this case of cherry-picking a root commit with --ff.
Reported-by: Zbyszek Szmek <zbyszek@in.waw.pl>
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | builtin/revert.c | 2 | ||||
| -rwxr-xr-x | t/t3506-cherry-pick-ff.sh | 10 |
2 files changed, 11 insertions, 1 deletions
diff --git a/builtin/revert.c b/builtin/revert.c index 4b47ace36..57b51e4a0 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -442,7 +442,7 @@ static int do_pick_commit(void) else parent = commit->parents->item; - if (allow_ff && !hashcmp(parent->object.sha1, head)) + if (allow_ff && parent && !hashcmp(parent->object.sha1, head)) return fast_forward_to(commit->object.sha1, head); if (parent && parse_commit(parent) < 0) diff --git a/t/t3506-cherry-pick-ff.sh b/t/t3506-cherry-pick-ff.sh index e17ae712b..51ca391e4 100755 --- a/t/t3506-cherry-pick-ff.sh +++ b/t/t3506-cherry-pick-ff.sh @@ -95,4 +95,14 @@ test_expect_success 'cherry pick a merge relative to nonexistent parent with --f test_must_fail git cherry-pick --ff -m 3 C ' +test_expect_success 'cherry pick a root commit with --ff' ' + git reset --hard first -- && + git rm file1 && + echo first >file2 && + git add file2 && + git commit --amend -m "file2" && + git cherry-pick --ff first && + test "$(git rev-parse --verify HEAD)" = "1df192cd8bc58a2b275d842cede4d221ad9000d1" +' + test_done |