зеркало из https://github.com/microsoft/git.git
Merge branch 'dk/reflog-walk-with-non-commit' into maint
"git reflog" incorrectly assumed that all objects that used to be at the tip of a ref must be commits, which caused it to segfault. * dk/reflog-walk-with-non-commit: reflog-walk: don't segfault on non-commit sha1's in the reflog
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90b99869d4
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@ -221,6 +221,7 @@ void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit)
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struct commit_info *commit_info =
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get_commit_info(commit, &info->reflogs, 0);
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struct commit_reflog *commit_reflog;
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struct object *logobj;
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struct reflog_info *reflog;
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info->last_commit_reflog = NULL;
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@ -232,15 +233,20 @@ void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit)
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commit->parents = NULL;
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return;
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}
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reflog = &commit_reflog->reflogs->items[commit_reflog->recno];
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info->last_commit_reflog = commit_reflog;
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commit_reflog->recno--;
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commit_info->commit = (struct commit *)parse_object(reflog->osha1);
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if (!commit_info->commit) {
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do {
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reflog = &commit_reflog->reflogs->items[commit_reflog->recno];
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commit_reflog->recno--;
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logobj = parse_object(reflog->osha1);
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} while (commit_reflog->recno && (logobj && logobj->type != OBJ_COMMIT));
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if (!logobj || logobj->type != OBJ_COMMIT) {
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commit_info->commit = NULL;
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commit->parents = NULL;
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return;
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}
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commit_info->commit = (struct commit *)logobj;
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commit->parents = xcalloc(1, sizeof(struct commit_list));
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commit->parents->item = commit_info->commit;
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@ -325,4 +325,17 @@ test_expect_success 'parsing reverse reflogs at BUFSIZ boundaries' '
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test_cmp expect actual
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'
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test_expect_success 'no segfaults for reflog containing non-commit sha1s' '
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git update-ref --create-reflog -m "Creating ref" \
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refs/tests/tree-in-reflog HEAD &&
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git update-ref -m "Forcing tree" refs/tests/tree-in-reflog HEAD^{tree} &&
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git update-ref -m "Restoring to commit" refs/tests/tree-in-reflog HEAD &&
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git reflog refs/tests/tree-in-reflog
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'
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test_expect_failure 'reflog with non-commit entries displays all entries' '
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git reflog refs/tests/tree-in-reflog >actual &&
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test_line_count = 3 actual
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'
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test_done
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