strlen without branches : Ugly C/compiler ""hack""

// compile with -O3 flag
size_t strlen_no_condbr(char *s)
{
        size_t l=0;
        void* ptr;
        while (1)
        {
                // ugly but gcc produce conditionnal branches if i don't do that
                goto *(void*) ( ((!!s[l])-1ll) & (long long)&&d | ((!!s[l])*-1ll) & (long long)&&i );
                i:
                l ++;
        }
        d:;
        return l;
}

size_t strlen_no_condbr2(char* s)
{
        size_t l = 0;
        volatile int x = 0;
        l --;
        while (1)
        {
                l++;
                switch ((unsigned char)s[l])
                {
                        case 0:
                                break;
                        case 1:
                                // random value so the compiler can't find a relation between s[l] and x
                                x = 205;
                                continue;
                        case 2:
                                x = 102;
                                continue;
                        [...]
                        case 254:
                                x = 10;
                                continue;
                        case 255:
                                x = 72;
                                continue;
                        default :
                                continue;
                }
                break;
        }
        return l;
}