Før assert

#include <string.h>

size_t q2_len(const char *s) {

const char *p = strchr(s,'q');

if(p)

p=strchr(p+1,'q');

if(!p)

p=strchr(s,'\0');

return p-s;

}

Genererer for return statement:

Warning 613: Possible use of null pointer 'p' in left argument to operator 'ptr-ptr'