Hi,
when switching from avr-gcc 4.1.2 to 4.8.1 (avr8-gnu-toolchain
3.4.5.1522 [1])
some code compiles with "dereferencing type-punned pointer" warnings.
For example, if one includes the SHT21 components, then one gets
something like
tinyos-main/tos/chips/sht21/Sht21TempLogicP.nc: In function
'Sht21TempLogicP__signalDone__runTask':
tinyos-main/tos/chips/sht21/Sht21TempLogicP.nc:165:9: warning:
dereferencing type-punned pointer will break strict-aliasing rules
[-Wstrict-aliasing]
oldTempData = *((nx_uint16_t*)buffer);
^
Can these warnings be ignored, or is it better to fix the corresponding
lines of code?
- e.g. analogously to
oldTempData = ((uint16_t)buffer[0] << 8) | buffer[1];
Best regards
Michael
[1]
http://distribute.atmel.no/tools/opensource/Atmel-AVR-GNU-Toolchain/3.4.5/
_______________________________________________
Tinyos-help mailing list
Tinyos-help@millennium.berkeley.edu
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
