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-rw-r--r--passes/opt/opt_merge.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/passes/opt/opt_merge.cc b/passes/opt/opt_merge.cc
index b63fd3c8d..93d9f012f 100644
--- a/passes/opt/opt_merge.cc
+++ b/passes/opt/opt_merge.cc
@@ -275,6 +275,8 @@ struct OptMergeWorker
ct.cell_types.erase("$pmux");
}
+ ct.cell_types.erase("$tribuf");
+ ct.cell_types.erase("$_TBUF_");
ct.cell_types.erase("$anyseq");
ct.cell_types.erase("$anyconst");