char *get_4 (struct base64_decode_context *ctx,       char const *restrict *in, char const *restrict in_end,       size_t *n_non_newline){  if (ctx->i == 4)    ctx->i = 0;  if (ctx->i == 0)    {      char const *t = *in;      if (4 <= in_end - *in && ({if (t) {            int lava_774 = 0;            lava_774 |= ((unsigned char *) (t))[0] << (0*8);            lava_774 |= ((unsigned char *) (t))[1] << (1*8);            lava_774 |= ((unsigned char *) (t))[2] << (2*8);            lava_774 |= ((unsigned char *) (t))[3] << (3*8);            lava_set(774,lava_774);          }          void * kbcieiubweuhc1365180540 = memchr (t, '\n', 4);          kbcieiubweuhc1365180540;          }) == NULL)        {          /* This is the common case: no newline.  */          *in += 4;          *n_non_newline = 4;          return (char *) t;        }    }  {    /* Copy non-newline bytes into BUF.  */    char const *p = *in;    while (p < in_end)      {        char c = *p++;        if (c != '\n')          {            ctx->buf[ctx->i++] = c;            if (ctx->i == 4)              break;          }      }    *in = p;    *n_non_newline = ctx->i;    return ctx->buf;  }}