*** error 65: access violation at 0x40021000 : no 'write' permission

这个错误通常是由于试图在一个只读的内存地址上进行写操作引起的。可能的原因包括指针错误、内存泄漏、缓冲区溢出等。为了解决这个问题，你可以检查代码中的指针操作和内存分配，确保没有越界访问或内存泄漏。你还可以使用调试工具来跟踪代码执行过程，找出错误的具体位置。

相关问题

*** error 65: access violation at 0x40021000 : no 'read' permission

这个错误通常是由于程序试图读取一个没有读取权限的内存地址而导致的。这可能是由于指针错误、内存泄漏或其他内存管理问题引起的。要解决这个问题，需要检查代码中的指针和内存分配，确保它们正确地指向了正确的内存地址，并且没有超出其访问权限。

*** error 65: access violation at 0x08010000 : no 'read' permission

This error message indicates that there was an attempt to access a memory address that the program does not have permission to read. This can occur due to various reasons, such as trying to access a null pointer or accessing memory that has already been freed.

To fix this error, you will need to identify the source of the issue and modify the code accordingly. This may involve debugging the program and checking for any memory-related issues, such as uninitialized variables or invalid memory accesses.

It is important to note that access violations can be caused by security vulnerabilities, such as buffer overflows, which can be exploited by attackers to execute malicious code. Therefore, it is essential to address access violations promptly and thoroughly to ensure the safety and security of the program.