SEI CERT C Coding Standard

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  • For func (p,n), where 'p' is the pointer, 'n' is the integer and 'func' is the library function, the value of â€˜n’ should not be greater than the effective size of the pointer. Also, in situations where 'n' is an expression (see <a href="#cs2">nonsee non-compliant code/compliant solution 2</a> 2 below) the effective type of the pointer should be compatible with either the derived type of 'n' or unsigned char.
  • For func (p,q, n), where 'p' and 'q' are both pointers, 'n' is the integer and 'func' is the library function, the value of â€˜n’ should not be greater than the effective size of any of the two pointers ('p' and 'q'). The effective type of the 'p' should be compatible with the derived type of 'n' or unsigned char. Similarly, the effective type of the 'p' should be compatible with the effective type of 'q' or unsigned char.
  • For expression E of the form: T* q = func (n), where 'func' is a memory allocation function, the value of 'n' should not be less than sizeof (T). Also, the effective type of 'T' should be compatible with either the derived type of 'n' or unsigned char.

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