puts "========"
puts "0030679: Attached model hangs most of OCCT common functionality"
puts "========"
puts ""

puts "REQUIRED ALL: Evaluation of infinite parameters"
restore [locate_data_file bug30679_face.brep] a

pcurve a
2dcvalue a_4 1 u v
mksurface s a
catch {svalue s u v x y z}