From 0d473e18c011e3e217846738f1ab987b1277cdd8 Mon Sep 17 00:00:00 2001
From: Jean-Paul Chaput <Jean-Paul.Chaput@lip6.fr>
Date: Thu, 30 Sep 2021 19:59:28 +0200
Subject: [PATCH] Fix crash in Anabatic::AntennaProtect.

* Bug: In Anabatic::AntennaProtect, if the diode cell exists *but* the
    maximum wire length for a diode is *not* defined (so zero) cancel
    the diode protection instead of making a divide by zero.
---
 anabatic/src/AntennaProtect.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/anabatic/src/AntennaProtect.cpp b/anabatic/src/AntennaProtect.cpp
index 7f08ef9b..9e16089c 100644
--- a/anabatic/src/AntennaProtect.cpp
+++ b/anabatic/src/AntennaProtect.cpp
@@ -1109,12 +1109,17 @@ namespace Anabatic {
     }
     EtesianEngine* etesian = static_cast<EtesianEngine*>
       ( ToolEngine::get( getCell(), EtesianEngine::staticGetName() ));
-    DbU::Unit segmentMaxWL = etesian->getAntennaDiodeMaxWL() / 2;
 
     if (not etesian->getDiodeCell()) {
       cerr << Warning( "AnabaticEngine::antennaProtect(): No diode cell found, skipped." ) << endl;
       return;
     }
+    if (etesian->getAntennaDiodeMaxWL() <= 0) {
+      cerr << Warning( "AnabaticEngine::antennaProtect(): Maximum antenna diode WL not set, skipped." ) << endl;
+      return;
+    }
+
+    DbU::Unit segmentMaxWL = etesian->getAntennaDiodeMaxWL() / 2;
 
     cmess1 << "  o  Antenna effect protection." << endl;
     startMeasures();