The recursive merge machinery accumulates its output in an output
buffer, to be flushed at the end of merge_recursive(). At this point,
we forgot to release the output buffer.
When calling merge_trees() (i.e. the non-recursive part of the recursive
merge) directly, the output buffer is never flushed because the caller
may be merge_recursive() which wants to flush the output itself.
For the same reason, merge_trees() cannot release the output buffer: it
may still be needed.
Forgetting to release the output buffer did not matter much when running
git-checkout, or git-merge-recursive, because we exited after the
operation anyway. Ever since cherry-pick learned to pick a commit range,
however, this memory leak had the potential of becoming a problem.
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
builtin/checkout.c | 1 +
merge-recursive.c | 2 ++
sequencer.c | 1 +
3 files changed, 4 insertions(+)
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 07dea3b..8d852d4 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -573,6 +573,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
exit(128);
ret = reset_tree(new->commit->tree, opts, 0,
writeout_error);
+ strbuf_release(&o.obuf);
if (ret)
return ret;
}
diff --git a/merge-recursive.c b/merge-recursive.c
index 1746c38..dcf1535 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -2068,6 +2068,8 @@ int merge_recursive(struct merge_options *o,
commit_list_insert(h2, &(*result)->parents->next);
}
flush_output(o);
+ if (o->buffer_output < 2)
+ strbuf_release(&o->obuf);
if (show(o, 2))
diff_warn_rename_limit("merge.renamelimit",
o->needed_rename_limit, 0);
diff --git a/sequencer.c b/sequencer.c
index 286a435..ec50519 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -293,6 +293,7 @@ static int do_recursive_merge(struct commit *base, struct commit *next,
clean = merge_trees(&o,
head_tree,
next_tree, base_tree, &result);
+ strbuf_release(&o.obuf);
if (clean < 0)
return clean;
--
2.9.0.281.g286a8d9
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