From f0e30abf624ebf9984170b4b81e06e15e31ee4de Mon Sep 17 00:00:00 2001
From: gatecat <gatecat@ds0.me>
Date: Fri, 5 Mar 2021 12:15:58 +0000
Subject: nexus: Fail gracefully when seeing special pins

Signed-off-by: gatecat <gatecat@ds0.me>
---
 nexus/arch.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'nexus')

diff --git a/nexus/arch.cc b/nexus/arch.cc
index 9f410758..2791b0df 100644
--- a/nexus/arch.cc
+++ b/nexus/arch.cc
@@ -781,7 +781,7 @@ Loc Arch::get_pad_loc(const PadInfoPOD *pad) const
 
 BelId Arch::get_pad_pio_bel(const PadInfoPOD *pad) const
 {
-    if (pad == nullptr)
+    if (pad == nullptr || pad->offset == -1)
         return BelId();
     return getBelByLocation(get_pad_loc(pad));
 }
-- 
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