Synopsis

(Required) The pointer arguments to the Standard Library functions memcpy, memmove and memcmp shall be pointers to qualified or unqualified versions of compatible types.

Enabled by default

Yes

Severity/Certainty

Medium/Medium

Full description

The pointer arguments to memcpy, memmove and memcmp have different types.

Coding standards

Code examples

The following code example fails the check and will give a warning:

/*
 * Is it intentional to only copy part of 's2'?
 */
void f(uint8_t s1[8], uint16_t s2[8])
{
  (void) memcpy(s1, s2, 8);
}

The following code example passes the check and will not give a warning about this issue:

/*
 * Is it intentional to only copy part of 's2'?
 */
void f(uint8_t s1[8], uint8_t s2[8])
{
  (void) memcpy(s1, s2, 8);
}