From 43b27dcc6a181cf5e668eb302c960e9c034554ce Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@beefcake.parabola.nu>
Date: Sat, 26 May 2018 00:50:56 -0400
Subject: dedupe-range: show dst index when on "open dst" errors

---
 lib/dedupe-range.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dedupe-range.c b/lib/dedupe-range.c
index c67b62c..b102b8f 100644
--- a/lib/dedupe-range.c
+++ b/lib/dedupe-range.c
@@ -37,7 +37,7 @@ void dedupe_range(uint64_t src_length, struct filepos src, struct filepos *dsts)
 	for (size_t i = 0; i < dst_count; i++) {
 		int dst_fd = open(dsts[i].filename, dsts[i].flags);
 		if (dst_fd < 0)
-			error(EXIT_FAILURE, errno, "open dst: %s", dsts[i].filename);
+			error(EXIT_FAILURE, errno, "open dst[%zu]: %s", i, dsts[i].filename);
 		range_info[i].dest_fd = dst_fd;
 		range_info[i].dest_offset = dsts[i].offset;
 	}
-- 
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