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-rw-r--r--passes/opt/opt_merge.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/passes/opt/opt_merge.cc b/passes/opt/opt_merge.cc
index b63fd3c8d..b46b4bf4b 100644
--- a/passes/opt/opt_merge.cc
+++ b/passes/opt/opt_merge.cc
@@ -275,6 +275,7 @@ struct OptMergeWorker
ct.cell_types.erase("$pmux");
}
+ ct.cell_types.erase("$tribuf");
ct.cell_types.erase("$anyseq");
ct.cell_types.erase("$anyconst");