..\application\INS_task.c(183): error: #513: a value of type "const fp32 *" cannot be assigned to an entity of type "fp32 *"
时间: 2024-06-01 18:08:58 浏览: 152
这个错误的意思是将一个 const fp32 指针类型的值赋值给了一个 fp32 指针类型的变量,这是不允许的,因为 const 指针指向的内存区域不允许被修改。
要解决这个问题,可以将 fp32 指针类型的变量也声明为 const 类型,或者在赋值时使用强制类型转换(需要确认转换的安全性)。具体的解决方法需要根据代码的具体情况来确定。
相关问题
error: #513: a value of type "const unsigned char *" cannot be assigned to an entity of type "unsigned char *"怎么修改这个错误
这个错误提示表示您试图将一个常量无符号字符指针(const unsigned char *)赋值给一个普通无符号字符指针(unsigned char *), C语言中这是不允许的,因为常量指针不能被修改。要修复这个问题,你可以:
1. 如果指向的数据确实是常量,可以将它转换为常量无符号字符数组(const unsigned char[]),然后再复制数据。
```c
const unsigned char constArray[] = {...};
unsigned char* mutablePointer = constArray;
```
2. 或者如果你只需要访问数据,而不改变它的地址,可以创建一个新的普通无符号字符数组,并拷贝内容。
```c
const unsigned char constData[SIZE] = {...};
unsigned char* mutableCopy = malloc(sizeof(constData));
memcpy(mutableCopy, constData, sizeof(constData));
```
记得处理好内存分配和释放,防止内存泄漏。
a.cpp:21:10: error: assignment of read-only reference ‘lc’
This error occurs when you are trying to modify a const reference. In line 21, you are trying to assign a value to a const reference variable 'lc'. Once a variable is declared as const, its value cannot be changed. Therefore, you cannot assign a new value to the variable 'lc'.
To fix this error, you can either remove the 'const' keyword from the declaration of 'lc' or assign a value to a non-const reference variable.
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