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-rw-r--r--builtin/merge-tree.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
index f9ab48597e..2a4aafec6a 100644
--- a/builtin/merge-tree.c
+++ b/builtin/merge-tree.c
@@ -118,7 +118,8 @@ static void show_diff(struct merge_list *entry)
if (!dst.ptr)
size = 0;
dst.size = size;
- xdi_diff(&src, &dst, &xpp, &xecfg, &ecb);
+ if (xdi_diff(&src, &dst, &xpp, &xecfg, &ecb))
+ die("unable to generate diff");
free(src.ptr);
free(dst.ptr);
}