fjpanag opened a new pull request, #9251:
URL: https://github.com/apache/nuttx/pull/9251
## Summary
The RTC driver causes the following warning:
```
timers/rtc.c: In function ‘rtc_initialize’:
timers/rtc.c:851:34: warning: ‘%d’ directive output may be truncated writing
between 1 and 11 bytes into a region of size 8 [-Wformat-truncation=]
851 | snprintf(devpath, 16, "/dev/rtc%d", minor);
| ^~
timers/rtc.c:851:25: note: directive argument in the range [-2147483648, 999]
851 | snprintf(devpath, 16, "/dev/rtc%d", minor);
| ^~~~~~~~~~~~
timers/rtc.c:851:3: note: ‘snprintf’ output between 10 and 20 bytes into a
destination of size 16
851 | snprintf(devpath, 16, "/dev/rtc%d", minor);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```
This PR fixes this warning.
The `devpath` is slightly enlarged, to ensure that all possible numbers can
be reliably printed.
## Impact
Practically none.
The buffer is enlarged by just 4 bytes, but it is also located in the stack.
So it shouldn't have any actual impact on any practical application.
## Testing
Build test only.
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