TASKING VX-toolset for ARM User Guide

CERT C Secure Coding StandardDCL32-CDCL35-CGuarantee that mutually visible identifiers are uniqueThe compiler encountered two or more identifiers that are identical in the first 31 characters.The ISO C99 standard allows a compiler to ignore characters past the first 31 in an identifier.Two distinct identifiers that are identical in the first 31 characters may lead to problems whenthe code is ported to a different compiler.Do not invoke a function using a type that does not match the function definitionThis warning is generated when a function pointer is set to refer to a function of anincompatible type. Calling this function through the function pointer will result in undefinedbehavior. Example:void my_function(int a);int main(void){int (*new_function)(int a) = my_function;return (*new_function)(10); /* the behavior is undefined */}19.3. Expressions (EXP)EXP01-CEXP12-CEXP30-CEXP32-CEXP33-CDo not take the size of a pointer to determine the size of the pointed-to typeThe size of the object(s) allocated by malloc(), calloc() or realloc() should be a multiple ofthe size of the base type of the result pointer. Therefore, the sizeof expression should beapplied to this base type, and not to the pointer type.Do not ignore values returned by functionsThe compiler gives this warning when the result of a function call is ignored at some place,although it is not ignored for other calls to this function. This warning will not be issued whenthe function result is ignored for all calls, or when the result is explicitly ignored with a (void)cast.Do not depend on order of evaluation between sequence pointsBetween two sequence points, an object should only be modified once. Otherwise the behavioris undefined.Do not access a volatile object through a non-volatile referenceIf an attempt is made to refer to an object defined with a volatile-qualified type through useof an lvalue with non-volatile-qualified type, the behavior is undefined.Do not reference uninitialized memoryUninitialized automatic variables default to whichever value is currently stored on the stackor in the register allocated for the variable. Consequently, uninitialized memory can cause aprogram to behave in an unpredictable or unplanned manner and may provide an avenuefor attack.857