File gfan-odr.patch of Package gfan

From a75e670e0e228e0a738eb65c7128a01446b4135c Mon Sep 17 00:00:00 2001
From: Alois Wohlschlager <alois1@gmx-topmail.de>
Date: Sat, 3 Jul 2021 11:07:23 +0200
Subject: [PATCH] Fix ODR violations
Upstream: not reachable

Various traversal code reused class names (Boundary, pathStepRidge,
pathStepFacet) in violation of the one definition rule. Put the
respective classes into anonymous namespaces to comply with ODR.
---
 src/gfanlib_traversal.cpp  | 4 ++++
 src/symmetrictraversal.cpp | 4 ++++
 src/tropicaltraverse.cpp   | 5 +++++
 3 files changed, 13 insertions(+)

diff --git a/src/gfanlib_traversal.cpp b/src/gfanlib_traversal.cpp
index dce38c1..3e9a746 100644
--- a/src/gfanlib_traversal.cpp
+++ b/src/gfanlib_traversal.cpp
@@ -62,6 +62,8 @@ bool FanBuilder::process(FanTraverser &traverser)
     in the computation is made these edges will be deleted.
  */
 
+namespace
+{
 
 class Boundary
 {
@@ -185,6 +187,8 @@ struct pathStepFacet
 	list<ZVector> ridgesRayUniqueVector;//stores the ray of the link that we came from
 };
 
+}
+
 /**
   We need to simulate two mutually recursive functions. An actual
   implementation of these two functions would probably not work since
diff --git a/src/symmetrictraversal.cpp b/src/symmetrictraversal.cpp
index 8cf6f40..4fe66e0 100644
--- a/src/symmetrictraversal.cpp
+++ b/src/symmetrictraversal.cpp
@@ -103,6 +103,8 @@ bool SymmetricTargetVertexSetBuilder::process(ConeTraverser &traverser)
     in the computation is made these edges will be deleted.
  */
 
+namespace
+{
 
 class Boundary
 {
@@ -258,6 +260,8 @@ struct pathStepFacet
   IntegerVectorList ridgesRayUniqueVector;//stores the ray of the link that we came from
 };
 
+}
+
 /**
   We need to simulate two mutually recursive functions. An actual
   implementation of these two functions would probably not work since
diff --git a/src/tropicaltraverse.cpp b/src/tropicaltraverse.cpp
index 05e9747..c01a69f 100644
--- a/src/tropicaltraverse.cpp
+++ b/src/tropicaltraverse.cpp
@@ -104,6 +104,9 @@ public:
   }
 };
 
+namespace
+{
+
 /**
    Rewrite these comments.
 
@@ -130,6 +133,8 @@ struct pathStepFacet
   IntegerVectorList ridges;
 };
 
+}
+
 /**
   We need to simulate two mutually recursive functions. An actual
   implementation of these two functions would propably not work since
-- 
2.32.0