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authorLibravatar Junio C Hamano <gitster@pobox.com>2020-05-14 14:39:43 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2020-05-14 14:39:43 -0700
commita2a0942a16a6459d4a52e7ee4ec85f7f90ad5334 (patch)
tree83dcf90fd0897ccf3974021dddd6e48042c89637
parentMerge branch 'jc/codingstyle-compare-with-null' (diff)
parentrebase --autosquash: fix a potential segfault (diff)
downloadtgif-a2a0942a16a6459d4a52e7ee4ec85f7f90ad5334.tar.xz
Merge branch 'js/rebase-autosquash-double-fixup-fix'
"rebase -i" segfaulted when rearranging a sequence that has a fix-up that applies another fix-up (which may or may not be a fix-up of yet another step). * js/rebase-autosquash-double-fixup-fix: rebase --autosquash: fix a potential segfault
-rw-r--r--sequencer.c7
-rwxr-xr-xt/t3415-rebase-autosquash.sh16
2 files changed, 21 insertions, 2 deletions
diff --git a/sequencer.c b/sequencer.c
index 9d1b3e7d4f..fd7701c88a 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -5385,10 +5385,13 @@ int todo_list_rearrange_squash(struct todo_list *todo_list)
todo_list->items[i].command =
starts_with(subject, "fixup!") ?
TODO_FIXUP : TODO_SQUASH;
- if (next[i2] < 0)
+ if (tail[i2] < 0) {
+ next[i] = next[i2];
next[i2] = i;
- else
+ } else {
+ next[i] = next[tail[i2]];
next[tail[i2]] = i;
+ }
tail[i2] = i;
} else if (!hashmap_get_from_hash(&subject2item,
strhash(subject), subject)) {
diff --git a/t/t3415-rebase-autosquash.sh b/t/t3415-rebase-autosquash.sh
index 093de9005b..7bab6000dc 100755
--- a/t/t3415-rebase-autosquash.sh
+++ b/t/t3415-rebase-autosquash.sh
@@ -424,4 +424,20 @@ test_expect_success 'abort last squash' '
! grep first actual
'
+test_expect_success 'fixup a fixup' '
+ echo 0to-fixup >file0 &&
+ test_tick &&
+ git commit -m "to-fixup" file0 &&
+ test_tick &&
+ git commit --squash HEAD -m X --allow-empty &&
+ test_tick &&
+ git commit --squash HEAD^ -m Y --allow-empty &&
+ test_tick &&
+ git commit -m "squash! $(git rev-parse HEAD^)" -m Z --allow-empty &&
+ test_tick &&
+ git commit -m "squash! $(git rev-parse HEAD^^)" -m W --allow-empty &&
+ git rebase -ki --autosquash HEAD~5 &&
+ test XZWY = $(git show | tr -cd W-Z)
+'
+
test_done