From 2fa08e11db49c9aa2dddeaaf7b8ff5b44d682a65 Mon Sep 17 00:00:00 2001
From: Tom Clegg <tom@tomclegg.ca>
Date: Mon, 19 Oct 2020 11:01:58 -0400
Subject: [PATCH] Handle variant 0 ("none") in CompactSequences.

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@tomclegg.ca>
---
 tilelib.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tilelib.go b/tilelib.go
index 8be8eb46cf..403be31c7b 100644
--- a/tilelib.go
+++ b/tilelib.go
@@ -163,6 +163,12 @@ func (tilelib *tileLibrary) loadCompactSequences(cseqs []CompactSequence, varian
 	for _, cseq := range cseqs {
 		for _, tseq := range cseq.TileSequences {
 			for i, libref := range tseq {
+				if libref.Variant == 0 {
+					// No variant (e.g., import
+					// dropped tiles with
+					// no-calls) = no translation.
+					continue
+				}
 				v, ok := variantmap[libref]
 				if !ok {
 					return fmt.Errorf("oops: CompactSequence %q has variant %d for tag %d, but that variant was not in its library", cseq.Name, libref.Variant, libref.Tag)
-- 
2.39.5