From 0e0ec53fd847e1a771d2327bf2a3db79c60259b2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mael=20Rouxel-Labb=C3=A9?=
 <mael.rouxel.labbe@geometryfactory.com>
Date: Wed, 15 Mar 2023 18:40:05 +0100
Subject: [PATCH] Fix overly zealous check: if den is 0, it's not a failure but
 a non-event

---
 .../include/CGAL/constructions/Straight_skeleton_cons_ftC2.h    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Straight_skeleton_2/include/CGAL/constructions/Straight_skeleton_cons_ftC2.h b/Straight_skeleton_2/include/CGAL/constructions/Straight_skeleton_cons_ftC2.h
index a2150b871e2..d5f4b1eaa3e 100644
--- a/Straight_skeleton_2/include/CGAL/constructions/Straight_skeleton_cons_ftC2.h
+++ b/Straight_skeleton_2/include/CGAL/constructions/Straight_skeleton_cons_ftC2.h
@@ -744,7 +744,7 @@ compute_degenerate_offset_lines_isec_timeC2 ( Trisegment_2_ptr< Trisegment_2<K,
         CGAL_STSKEL_TRAITS_TRACE("Event time (degenerate, vertical) n=" << n2str(num) << " d=" << n2str(den) << " n/d=" << Rational<FT>(num,den) )
       }
 
-      ok = CGAL_NTS is_finite(num) && CGAL_NTS is_finite(den) && !CGAL_NTS certified_is_zero(den);
+      ok = CGAL_NTS is_finite(num) && CGAL_NTS is_finite(den);
       return cgal_make_optional(ok, Rational<FT>(num,den)) ;
     }
     else