IPC::Run 0000 0123---7---- [#1(20574)]: debugging fd is 3
IPC::Run 0000 0123---7---- [#1(20574)]: ** starting
IPC::Run 0000 0123---7---- [#1(20574)]: opening pty '0'
IPC::Run 0000 012345-7---- [#1(20574)]: pty() = ( 4, 5 )
IPC::Run 0000 012345-7---- [#1(20574)]: '/bin/./cat' is absolute
IPC::Run 0000 012345-7---- [#1(20574)]: kid to read 0 from pty '0'
IPC::Run 0000 012345-7---- [#1(20574)]: kid 1 to read 0 from SCALAR via pty '0'
IPC::Run 0000 012345-7---- [#1(20574)]: kid 1 to write 1 to SCALAR via pty '0'
IPC::Run 0000 012345-7---- [#1(20574)]: kid 1 to write 2 to SCALAR
IPC::Run 0000 012345678--- [#1(20574)]: pipe() = ( 6, 8 ) 
IPC::Run 0000 012345678--- [#1(20574)]: kid 1[]'s 0 is my 4
IPC::Run 0000 012345678--- [#1(20574)]: kid 1[]'s 1 is my 4
IPC::Run 0000 012345678--- [#1(20574)]: kid 1[]'s 2 is my 6
IPC::Run 0000 012345678--- [#1(20574)]: child: `'/bin/./cat'`
IPC::Run 0000 012345678--- [#1(20574)]: opening sync pipe 
IPC::Run 0000 01234567890- [#1(20574)]: pipe() = ( 9, 10 ) 
IPC::Run 0000 01234567890- [#1(20574)]: fork() = 20575
IPC::Run 0000 0123456789-- [#1(20574)]: close( 10 ) = 0
IPC::Run 0000 01234567890- [#1(20575) cat]: Cleaning up parent's ptty '0'
IPC::Run 0000 0123-567890- [#1(20575) cat]: closing stdin, out, err
IPC::Run 0000 ---3-567890- [#1(20575) cat]: open fds: 6 8 4 9 10 5
IPC::Run 0000 ---3-5-7890- [#1(20575) cat]: close( 6 ) = 0
IPC::Run 0000 ---3-5-78-0- [#1(20575) cat]: close( 9 ) = 0
IPC::Run 0000 0--3-5-78-0- [#1(20575) cat]: dup2( 5, 0 ) = 0
IPC::Run 0000 01-3-5-78-0- [#1(20575) cat]: dup2( 5, 1 ) = 1
IPC::Run 0000 0123-5-78-0- [#1(20575) cat]: dup2( 1, 2 ) = 2
IPC::Run 0000 0123-5-78-0- [#1(20575) cat]: dup2( 8, 2 ) = 2
IPC::Run 0000 0123---78-0- [#1(20575) cat]: close( 5 ) = 0
IPC::Run 0000 0123---7--0- [#1(20575) cat]: close( 8 ) = 0
IPC::Run 0000 0123---7--0- [#1(20575) cat]: execing /bin/./cat
IPC::Run 0000 0123---7--0- [#1(20575) cat]: exec()ing '/bin/./cat'
IPC::Run 0000 0123456789-- [#1(20574)]: read( 9 ) = 0 but true chars ''
IPC::Run 0000 012345678--- [#1(20574)]: close( 9 ) = 0
IPC::Run 0000 01234-67---- [#1(20574)]: close( 8 ) = 0
Input2pump:1. line
IPC::Run 0000 01234-67---- [#1(20574)]: ** pumping
IPC::Run 0000 01234-67---- [#1(20574)]: fds for select: ----b-r-----
IPC::Run 0000 01234-67---- [#1(20574)]: timeout=forever
IPC::Run 0000 01234-67---- [#1(20574)]: selected  ----w-------
IPC::Run 0000 01234-67---- [#1(20574)]: filtering data to fd 4 (kid's stdin)
IPC::Run 0000 01234-67---- [#1(20574)]: writing to fd 4 (kid's stdin)
IPC::Run 0000 01234-67---- [#1(20574)]: write( 4, '1. line' ) = 7
IPC::Run 0000 01234-67---- [#1(20574)]: exiting _select(): io occured and break_on_io set
out:
Input2pump:2. line
IPC::Run 0000 01234-67---- [#1(20574)]: ** pumping
IPC::Run 0000 01234-67---- [#1(20574)]: fds for select: ----b-r-----
IPC::Run 0000 01234-67---- [#1(20574)]: timeout=forever
IPC::Run 0000 01234-67---- [#1(20574)]: selected  ----b-------
IPC::Run 0000 01234-67---- [#1(20574)]: filtering data to fd 4 (kid's stdin)
IPC::Run 0000 01234-67---- [#1(20574)]: writing to fd 4 (kid's stdin)
IPC::Run 0000 01234-67---- [#1(20574)]: write( 4, '2. line' ) = 7
IPC::Run 0000 01234-67---- [#1(20574)]: filtering data from fd 4 (kid's stdout)
IPC::Run 0000 01234-67---- [#1(20574)]: reading from fd 4 (kid's stdout)
IPC::Run 0000 01234-67---- [#1(20574)]: read( 4 ) = 7 chars '1. line'
IPC::Run 0000 01234-67---- [#1(20574)]: exiting _select(): io occured and break_on_io set
out:1. line