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A command is provided to list all Ada exceptions:

info exceptions
info exceptions regexp

The info exceptions command allows you to list all Ada exceptions defined within the program being debugged, as well as their addresses. With a regular expression, regexp, as argument, only those exceptions whose names match regexp are listed.

Below is a small example, showing how the command can be used, first without argument, and next with a regular expression passed as an argument.

(gdb) info exceptions
All defined Ada exceptions:
constraint_error: 0x613da0
program_error: 0x613d20
storage_error: 0x613ce0
tasking_error: 0x613ca0
const.aint_global_e: 0x613b00
(gdb) info exceptions const.aint
All Ada exceptions matching regular expression "const.aint":
constraint_error: 0x613da0
const.aint_global_e: 0x613b00

It is also possible to ask GDB to stop your program’s execution when an exception is raised. For more details, see Set Catchpoints.