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authorLibravatar Junio C Hamano <gitster@pobox.com>2016-03-21 12:01:43 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2016-03-23 10:12:10 -0700
commitb84e65d40929ec1146f54dcf4c9dbf8dc58467d0 (patch)
tree666e5f863b994cc9289bfa61be40f4d23b6566dd /Documentation/RelNotes/2.1.1.txt
parentMerge branch 'mm/doc-hooks-linkgit-fix' into maint (diff)
downloadtgif-b84e65d40929ec1146f54dcf4c9dbf8dc58467d0.tar.xz
merge: fix NULL pointer dereference when merging nothing into void
When we are on an unborn branch and merging only one foreign parent, we allow "git merge" to fast-forward to that foreign parent commit. This codepath incorrectly attempted to dereference the list of parents that the merge is going to record even when the list is empty. It must refuse to operate instead when there is no parent. All other codepaths make sure the list is not empty before they dereference it, and are safe. Reported-by: Jose Ivan B. Vilarouca Filho Signed-off-by: Junio C Hamano <gitster@pobox.com>
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