- *(uint32_t *) &ctx->buffer[bytes + pad + 4] = SWAP (ctx->total[0] << 3);
- *(uint32_t *) &ctx->buffer[bytes + pad] = SWAP ((ctx->total[1] << 3) |
- (ctx->total[0] >> 29));
+ ctx->buffer[size - 2] = SWAP ((ctx->total[1] << 3) | (ctx->total[0] >> 29));
+ ctx->buffer[size - 1] = SWAP (ctx->total[0] << 3);
+
+ memcpy (&((char *) ctx->buffer)[bytes], fillbuf, (size - 2) * 4 - bytes);