puts "========"
puts "0027519: Inconsistent result of SECTION operation"
puts "========"
puts ""

restore [locate_data_file bug27448_b1255.brep] b
explode b
bsection result b_1 b_2
set chsec [checksection result]
puts $chsec
if {![regexp {nb alone Vertices : 2} $chsec]} { 
  puts "Error: the section is not closed"
}