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commit: simplify and correct refcounting in nth_gen_ancestor

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We can make use of git_object_dup to use refcounting instead of pointer
comparison to make sure we don't free the caller's object.

This also lets us simplify the case for '~0' which is now just an
assignment instead of looking up the object we have at hand.
This commit is contained in:
Carlos Martín Nieto 2014-03-07 15:17:08 +01:00
parent 5187b609ba
commit 7c1ee212b7
1 changed files with 8 additions and 9 deletions
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15
src/commit.c
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@ -455,18 +455,17 @@ int git_commit_nth_gen_ancestor(
assert(ancestor && commit); assert(ancestor && commit);
current = (git_commit *)commit; if (git_object_dup((git_object **) &current, (git_object *) commit) < 0)
return -1;
if (n == 0) if (n == 0) {
return git_commit_lookup( *ancestor = current;
ancestor, return 0;
commit->object.repo, }
git_object_id((const git_object *)commit));
while (n--) { while (n--) {
error = git_commit_parent(&parent, (git_commit *)current, 0); error = git_commit_parent(&parent, current, 0);
if (current != commit)
git_commit_free(current); git_commit_free(current);
if (error < 0) if (error < 0)