From aca191d9c929e62256ebcc76fb33c222e5f19f57 Mon Sep 17 00:00:00 2001
From: skl <skl@opencascade.com>
Date: Fri, 3 Aug 2007 07:40:38 +0000
Subject: [PATCH] Corrected for bug NPAL16567.

---
 src/StdMeshers/StdMeshers_Quadrangle_2D.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx b/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx
index c880c9ce1..2c3c74128 100644
--- a/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx
+++ b/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx
@@ -239,6 +239,9 @@ bool StdMeshers_Quadrangle_2D::Compute (SMESH_Mesh& aMesh,
   const vector<UVPtStruct>& uv_e2 = quad->side[2]->GetUVPtStruct(true,1 );
   const vector<UVPtStruct>& uv_e3 = quad->side[3]->GetUVPtStruct(false,0);
 
+  if ( uv_e0.empty() || uv_e1.empty() || uv_e2.empty() || uv_e3.empty() )
+    return error( COMPERR_BAD_INPUT_MESH );
+
   double eps = Precision::Confusion();
 
   // Boundary quadrangles
-- 
2.39.2