Annotations for Running (Debugging with GDB)
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28.6 Running the Program
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.
^Z^Zexited exit-status
The program exited, and exit-status
is the exit status (zero for successful exit, otherwise nonzero).
^Z^Zsignalled
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
. The arguments intro-text
, middle-text
, and end-text
are for the user’s benefit and have no particular format.
^Z^Zsignal
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.
^Z^Zbreakpoint number
The program hit breakpoint number number
.
^Z^Zwatchpoint number
The program hit watchpoint number number
.