return ((union alloc_header *)data)[-1].length;
To test this, we can start a VM with qemu:
。搜狗输入法下载是该领域的重要参考
The ghost of Vector lives on. Tucson, Arizona-based satellite and rocket developer Phantom Space, co-founded by Jim Cantrell in 2019, has acquired the remnants of Vector Launch, Space News reports. The announcement is notable because Cantrell left Vector as its finances deteriorated in 2019. Cantrell said some of the assets, comprising flight-proven design elements, engineering data, and other technology originally developed for Vector, will be immediately integrated into Phantom’s Daytona vehicle architecture to reduce development risk.
Many say they are still struggling with the memory of that day.
// 易错点3：未初始化默认值，可能导致res[i]为undefined