04-05-2018, 10:17 AM
The example is compliant with rule 8.3 as the type name is the same, there are no type qualifiers and the size is not considered by this rule.
However, the code does violate other MISRA C:2012 rules.
In both cases the array declaration are "Tentative definitions" ( C99 6.9.2(2) ). Assuming that there are no other declarations/definitions of "n".
int n[4]; is a "tentative definition" which resolves to a definition of array with size 4 with external linkage at the end of the translation unit for File A.
int n[]; is a "tentative definition" which resolves to a definition of array with size 1 with external linkage at the end of the translation unit for File B.
The code violates rules 8.4, 8.6 and 8.11.
However, the code does violate other MISRA C:2012 rules.
In both cases the array declaration are "Tentative definitions" ( C99 6.9.2(2) ). Assuming that there are no other declarations/definitions of "n".
int n[4]; is a "tentative definition" which resolves to a definition of array with size 4 with external linkage at the end of the translation unit for File A.
int n[]; is a "tentative definition" which resolves to a definition of array with size 1 with external linkage at the end of the translation unit for File B.
The code violates rules 8.4, 8.6 and 8.11.
Posted by and on behalf of the MISRA C Working Group