>>>>> "t" == ts <decoux / moulon.inra.fr> writes: t> Someone can verified is this is still true Well, I've forgotten to give the reason : with bison 2.0 moulon% ./ruby ~/local/bin/sisu NEWNODE b7de24a4 : 211 /home/msys/decoux/local/lib/ruby/site_ruby/1.8/sisu/0.27/param.rb FREE b7de24a4(1) : 464 /home/msys/decoux/local/lib/ruby/site_ruby/1.8/sisu/0.27/param.rb /home/msys/decoux/local/lib/ruby/site_ruby/1.8/sisu/0.27/param.rb:480: [BUG] fixpos b7de24a4 : 480 /home/msys/decoux/local/lib/ruby/site_ruby/1.8/sisu/0.27/param.rb ruby 1.8.3 (2005-09-21) [i686-linux] Aborted moulon% FREE b7de24a4(1) (1) means that ruby_in_compile = 1 and in this case the node is not marked rb_bug() is called because orig->flags == 0 in fixpos() With bison 1.875d : the node is normally marked Guy Decoux