gistfile1.txt

/**
 * Some versions of glibc do not take kindly to copying
 * into a char[1] even if it's within valid address space
 */

#define LIBCOUCHBASE_SASL_MAXPWLEN(instance) \
    ((sizeof(instance->sasl.password.buffer) - \
     sizeof(instance->sasl.secret.len))-1)

void
libcouchbase_set_sasl_password(libcouchbase_t instance, const char *passwd)
{
    size_t pwlen = strlen(passwd);
    if (pwlen > LIBCOUCHBASE_SASL_MAXPWLEN(instance)) {
        fprintf(stderr, "Possible buffer overflow - password too long!\n");
        abort();
    }
    instance->password.secret.len = pwlen;
    memcpy(intance->password.buffer +
            (sizeof (instance->password.buffer) -
             LIBCOUCHBASE_SASL_MAXPWLEN(instance)),
            passwd,
            pwlen);
}

/*
 * ....
 */

if (passwd) {
    libcouchbase_sat_sasl_password(instance, passwd);
}