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-rw-r--r--line-log.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/line-log.c b/line-log.c
index 038c58a39..b7864ad58 100644
--- a/line-log.c
+++ b/line-log.c
@@ -1141,6 +1141,9 @@ static int process_ranges_merge_commit(struct rev_info *rev, struct commit *comm
int i;
int nparents = commit_list_count(commit->parents);
+ if (nparents > 1 && rev->first_parent_only)
+ nparents = 1;
+
diffqueues = xmalloc(nparents * sizeof(*diffqueues));
cand = xmalloc(nparents * sizeof(*cand));
parents = xmalloc(nparents * sizeof(*parents));