From 76eeac70cfed4665e134a58fcbaf22ec2e80b3e5 Mon Sep 17 00:00:00 2001
From: azv <azv@opencascade.com>
Date: Fri, 23 Jan 2015 15:55:56 +0300
Subject: [PATCH] 0025582: SIGSEGV in thrusections of circle segments

Eliminating regressions

Fixed compilation warning ('di' : unreferenced formal parameter).

Added test bugs/modalg_5/bug25578
---
 src/BRepFill/BRepFill_Generator.cxx                  |  8 ++++++--
 .../GeomliteTest_ModificationCommands.cxx            |  2 +-
 tests/bugs/modalg_5/bug25578                         | 12 ++++++++++++
 3 files changed, 19 insertions(+), 3 deletions(-)
 create mode 100644 tests/bugs/modalg_5/bug25578

diff --git a/src/BRepFill/BRepFill_Generator.cxx b/src/BRepFill/BRepFill_Generator.cxx
index f12a486dc7..359f310f08 100644
--- a/src/BRepFill/BRepFill_Generator.cxx
+++ b/src/BRepFill/BRepFill_Generator.cxx
@@ -398,8 +398,12 @@ void CreateKPart(const TopoDS_Edge& Edge1,const TopoDS_Edge& Edge2,
   BW1.MakeWire(newW1);
   BW2.MakeWire(newW2);
 
-  GeomAdaptor_Curve aC1Adaptor(C1);
-  GeomAdaptor_Curve aC2Adaptor(C2);
+  GeomAdaptor_Curve aC1Adaptor;
+  if (!C1.IsNull())
+    aC1Adaptor.Load(C1);
+  GeomAdaptor_Curve aC2Adaptor;
+  if (!C2.IsNull())
+    aC2Adaptor.Load(C2);
 
   // calculate the surface
   Handle(Geom_Surface) surface;
diff --git a/src/GeomliteTest/GeomliteTest_ModificationCommands.cxx b/src/GeomliteTest/GeomliteTest_ModificationCommands.cxx
index b492617059..38b1600bf0 100644
--- a/src/GeomliteTest/GeomliteTest_ModificationCommands.cxx
+++ b/src/GeomliteTest/GeomliteTest_ModificationCommands.cxx
@@ -137,7 +137,7 @@ static Standard_Integer samerange (Draw_Interpretor& /*di*/, Standard_Integer n,
 //purpose  : Changes a weight of a pole on B-spline curve/surface
 //=======================================================================
 
-static Standard_Integer setweight(Draw_Interpretor& di, Standard_Integer n, const char** a)
+static Standard_Integer setweight(Draw_Interpretor& /*di*/, Standard_Integer n, const char** a)
 {
   if (n < 4 || n > 5)
   {
diff --git a/tests/bugs/modalg_5/bug25578 b/tests/bugs/modalg_5/bug25578
new file mode 100644
index 0000000000..58c15e235b
--- /dev/null
+++ b/tests/bugs/modalg_5/bug25578
@@ -0,0 +1,12 @@
+puts "========="
+puts "OCC25578"
+puts "========="
+puts ""
+###########################################################
+# SIGSEGV in BRepSweep_Rotation in case of singularities
+###########################################################
+
+psphere Sphere 5 0 90 90
+explode Sphere F
+revol rr Sphere_1 0 0 0 0 0 1 360
+revol rr Sphere_1 0 0 0 1 0 0 90