1 pid .... Thread .... first
2 pid .... Thread .... second
3 pid .... Thread .... third
4 pid .... Thread .... fourth
5 pid .... Thread .... after next
: inferior
call pushed from mcbreak.stdinB.gdb
6 pid .... Thread .... called from level
7 called from level int_und is not zero
8 pid .... Thread .... called from main
