[PATCH v5 08/16] merge-recursive: allow write_tree_from_memory() to error out

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It is possible that a tree cannot be written (think: disk full). We
will want to give the caller a chance to clean up instead of letting
the program die() in such a case.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 merge-recursive.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/merge-recursive.c b/merge-recursive.c
index 2be1e17..1f86338 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1888,8 +1888,8 @@ int merge_trees(struct merge_options *o,
 	else
 		clean = 1;
 
-	if (o->call_depth)
-		*result = write_tree_from_memory(o);
+	if (o->call_depth && !(*result = write_tree_from_memory(o)))
+		return -1;
 
 	return clean;
 }
-- 
2.9.0.281.g286a8d9


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