From 38293d3bdf3d07be14b531dcbffa56c9d61edb51 Mon Sep 17 00:00:00 2001
From: Krystine Sherwin <93062060+KrystalDelusion@users.noreply.github.com>
Date: Fri, 14 Mar 2025 14:08:16 +1300
Subject: [PATCH] select.cc: Fix %i when rhs is empty

---
 passes/cmds/select.cc | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/passes/cmds/select.cc b/passes/cmds/select.cc
index c42c0ead2..bb1055c67 100644
--- a/passes/cmds/select.cc
+++ b/passes/cmds/select.cc
@@ -431,9 +431,17 @@ static void select_op_intersect(RTLIL::Design *design, RTLIL::Selection &lhs, co
 	if (rhs.full_selection && !lhs.selects_boxes)
 		return;
 
-	if (lhs.empty() || rhs.empty())
+	if (lhs.empty())
 		return;
 
+	if (rhs.empty()) {
+		lhs.full_selection = false;
+		lhs.complete_selection = false;
+		lhs.selected_modules.clear();
+		lhs.selected_members.clear();
+		return;
+	}
+
 	select_all(design, lhs);
 
 	std::vector<RTLIL::IdString> del_list;