<!--- 请清晰详细地描述你遇到的问题，描述问题时请给出芯片/BSP/工具链，RT-Thread版本，复现步骤及现象或者有条理地描述你的问题。在问题得到解决后，请及时关闭issue。欢迎到论坛提问：https://club.rt-thread.org/ --> <!--- Please describe your problem clearly and in detail. When describing the problem, please use numbers or bullet points to describe your problem coherently. After the problem is resolved, please close the issue in time. Welcome to the forum to ask questions: https://club.rt-thread.io/ --> 无符号数与负数比较： https://github.com/RT-Thread/rt-thread/blob/87d47bf935cecb0651c066969f1696990ac97343/components/drivers/ipc/condvar.c#L50 负值不明确的自动转换为无符号数： https://github.com/RT-Thread/rt-thread/blob/87d47bf935cecb0651c066969f1696990ac97343/components/drivers/ipc/condvar.c#L128
无符号数与负数比较：
rt-thread/components/drivers/ipc/condvar.c
Line 50 in 87d47bf
负值不明确的自动转换为无符号数：
rt-thread/components/drivers/ipc/condvar.c
Line 128 in 87d47bf