puts or p on simple matrix crashes #625
Description
Just installed nmatrix on Ruby 2.5.3 / Debian 9. Trying to print a simple matrix under irb would crash:
2.5.3 :001 > require 'nmatrix' => true 2.5.3 :002 > m = NMatrix.new([2, 3], [0, 1, 2, 3, 4, 5], dtype: :int64) => #<NMatrix:0x000055694e8bd028 shape:[2,3] dtype:int64 stype:dense> 2.5.3 :003 > puts m Traceback (most recent call last): Traceback (most recent call last): 18: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/bin/irb:11:in `<main>' 17: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:383:in `start' 16: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:427:in `run' 15: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:427:in `catch' 14: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:428:in `block in run' 13: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:487:in `eval_input' 12: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb/ruby-lex.rb:231:in `each_top_level_statement' 11: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb/ruby-lex.rb:231:in `catch' 10: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb/ruby-lex.rb:232:in `block in each_top_level_statement' 9: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb/ruby-lex.rb:232:in `loop' 8: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb/ruby-lex.rb:246:in `block (2 levels) in each_top_level_statement' 7: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:488:in `block in eval_input' 6: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:623:in `signal_status' 5: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:529:in `block (2 levels) in eval_input' 4: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:529:in `puts' 3: from /home/ljulliard/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/irb.rb:529:in `puts' 2: from /home/ljulliard/.rvm/gems/ruby-2.5.3/gems/packable-1.3.10/lib/packable/extensions/io.rb:62:in `write_with_packing' 1: from /home/ljulliard/.rvm/gems/ruby-2.5.3/gems/packable-1.3.10/lib/packable/extensions/io.rb:86:in `pack_and_write' /home/ljulliard/.rvm/gems/ruby-2.5.3/gems/packable-1.3.10/lib/packable/extensions/io.rb:86:in `pos': Illegal seek @ rb_io_tell - <STDOUT> (Errno::ESPIPE)``` Any clue on what's happening here ?