Rule 11.9: Does this struct initialization violate rule 11.9? - Printable Version +- MISRA Discussion Forums (https://forum.misra.org.uk) +-- Forum: MISRA C (https://forum.misra.org.uk/forumdisplay.php?fid=4) +--- Forum: MISRA C:2012 and MISRA C:2023 guidelines (https://forum.misra.org.uk/forumdisplay.php?fid=21) +---- Forum: 8.11 Pointer type conversions (https://forum.misra.org.uk/forumdisplay.php?fid=166) +---- Thread: Rule 11.9: Does this struct initialization violate rule 11.9? (/showthread.php?tid=1371) |
Rule 11.9: Does this struct initialization violate rule 11.9? - fst-mra - 27-09-2017 Dear community, our analysis tool reports the following struct initialization to violate rule 11.9 (macro NULL is the only permitted form of integer null pointer constant): static const myType myStruct = { 64, {0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0}, 0 }; with: typedef unsigned short uint16; typedef unsigned char uint8; typedef struct { uint16 myVariable01; uint8 myArray [16]; uint8 myVariable02; } myType; Unfortunately, neither from the tool documentation nor from the MISRA documentation we can conclude why this initialization would be non-compliant. Also we cannot see what the risk behind this deviation would be. Is this deviation false-positive? Does it introduce any portability, maintainability etc. risk? Thanks for your support. Frank Re: Rule 11.9: Does this struct initialization violate rule 11.9? - dg1980 - 28-09-2017 Code: typedef struct { A violation would look like this: Code: uint8* ptr = 0;// use NULL for pointer initialization Re: Rule 11.9: Does this struct initialization violate rule 11.9? - misra-c - 24-10-2017 There is no null pointer constant in this example and hence no violation of rule 11.9 |