patacongo commented on issue #8869:
URL: https://github.com/apache/nuttx/issues/8869#issuecomment-1479571659
> **Another Must-Fix Bug**. I just did a quit glance through some of the
code to see how real time signal numbers are being defined. They appear: ...
Kconfig files that allow configurable signals have the same issue.
$ find nuttx -name Kconfig | xargs grep SIG
$ find nuttx-apps -name Kconfig | xargs grep SIG
**Real Time Signal Default Value**. The default value for all real time
signals must be in the range SIGRTMIN through SIGRTMAX. Some are not. For
example, in nuttx-apps/examples/ajoystick/Kconfig:
19 config EXAMPLES_AJOYSTICK_SIGNO
20 int "Joystick signal"
21 default 13
In that case, the joystick notification is given the same value as SIG_PIPE.
**Real Time Signal Range**. Configurable real time signal number selections
should be limited by range SIGRTMIN SIGRTMAX.
**Standard Signal Number Range.** Standard signal numbers are also
configurable in sched/Kconfig. I am not sure why since they have very no
options because there are no free signal numbers and they cannot be real time
signals. They all need to have `range 1 SIGRTMIN-1`.
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