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list-objects.c: don't add an unparsed NULL as a pending tree

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"git rev-list --first-parent --boundary $commit^..$commit" segfaults on a
merge commit since 8d2dfc4 (process_{tree,blob}: show objects without
buffering, 2009-04-10), as it tried to dereference a commit that was
discarded as UNINTERESTING without being parsed (hence lacking "tree").

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano
2011-03-14 12:29:50 -07:00
parent 8d2dfc49b1
commit 6e7d0efa90
2 changed files with 33 additions and 1 deletions
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7
list-objects.c
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@ -147,7 +147,12 @@ void traverse_commit_list(struct rev_info *revs,
struct commit *commit;
while ((commit = get_revision(revs)) != NULL) {
add_pending_tree(revs, commit->tree);
/*
* an uninteresting boundary commit may not have its tree
* parsed yet, but we are not going to show them anyway
*/
if (commit->tree)
add_pending_tree(revs, commit->tree);
show_commit(commit);
}
for (i = 0; i < revs->pending.nr; i++) {