OCCT

puts "============"
puts "OCC26289"
puts "============"
puts ""
#######################################################################
# STEP import/export produces an empty shape
#######################################################################

restore [locate_data_file bug26289_solid_3.brep] a1

set aFile ${imagedir}/bug26289.stp
catch { file delete ${aFile} }

stepwrite a a1 ${aFile}

stepread ${aFile} b *

checknbshapes b_1 -vertex 338 -edge 673 -wire 337 -face 337 -shell 1 -solid 1 -compsolid 0 -compound 0 -shape 1687 -m "Shape"

vinit View1
vdisplay a1
vfit
vdump ${imagedir}/${casename}_1.png

vinit View2
vdisplay b_1
vfit
vdump ${imagedir}/${casename}_2.png