From d713b7e06a58947e717ef374e61e38c3d7fb9c8b Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Tue, 25 Apr 2017 12:43:29 +0200
Subject: [PATCH] Limit retries for boolean op on OCCT 6.9 and higher

---
 src/ifcgeom/IfcGeomFunctions.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ifcgeom/IfcGeomFunctions.cpp b/src/ifcgeom/IfcGeomFunctions.cpp
index 71c742a155..422bec41ad 100644
--- a/src/ifcgeom/IfcGeomFunctions.cpp
+++ b/src/ifcgeom/IfcGeomFunctions.cpp
@@ -2554,7 +2554,10 @@ bool IfcGeom::Kernel::boolean_operation(const TopoDS_Shape& a, const TopTools_Li
 	}
 	delete builder;
 	if (!success) {
-		return boolean_operation(a, b, op, result, fuzziness * 10.);
+        const double new_fuzziness = fuzziness * 10.;
+        if (new_fuzziness + 1e-15 <= getValue(GV_PRECISION) * 1000.) {
+            return boolean_operation(a, b, op, result, new_fuzziness);
+        }
 	}
 	return success;
 }