From 44b0fdc2bf8bac019641f4f5c5f9d29294fc0624 Mon Sep 17 00:00:00 2001
From: "Emil J. Tywoniak" <emil@tywoniak.eu>
Date: Fri, 3 May 2024 20:43:01 +0200
Subject: [PATCH] bbox_derive: add assert and debug print

---
 passes/cmds/bbox_derive.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/passes/cmds/bbox_derive.cc b/passes/cmds/bbox_derive.cc
index 758f793004a..a35e9629058 100644
--- a/passes/cmds/bbox_derive.cc
+++ b/passes/cmds/bbox_derive.cc
@@ -71,6 +71,8 @@ struct BboxDerivePass : Pass {
 
 				IdString derived_type = base->derive(d, cell->parameters);
 				Module *derived = d->module(derived_type);
+				log_assert(derived && "Failed to derive module\n");
+				log_debug("derived %s\n", derived_type.c_str());
 
 				if (!naming_attr.empty() && derived->has_attribute(naming_attr)) {
 					IdString new_name = RTLIL::escape_id(derived->get_string_attribute(naming_attr));