When the program starts executing due to a gdb command such as step or continue,
^Z^Zstarting |
is output. When the program stops,
^Z^Zstopped |
is output. Before the stopped annotation, a variety of annotations describe how the program stopped.
The program exited, and exit-status is the exit status (zero for successful exit, otherwise nonzero).
The program exited with a signal. After the ^Z^Zsignalled, the annotation continues:
intro-text ^Z^Zsignal-name name ^Z^Zsignal-name-end middle-text ^Z^Zsignal-string string ^Z^Zsignal-string-end end-text |
where name is the name of the signal, such as SIGILL or SIGSEGV, and string is the explanation of the signal, such as Illegal Instruction or Segmentation fault. intro-text, middle-text, and end-text are for the user's benefit and have no particular format.
The syntax of this annotation is just like signalled, but gdb is just saying that the program received the signal, not that it was terminated with it.
The program hit breakpoint number number.
The program hit watchpoint number number.