C C++ 常见编译错误提示释义

索引

    • 1.iteration 16 invokes undefined behavior**
    • 2.warning: excess elements in array initializer**
    • 3.passing argument 1 of 'sprintf' discards 'volatile' qualifier from pointer target type**
    • 4 in expansion of macro

1.iteration 16 invokes undefined behavior**

常见于对数组的操作,数组溢出错误。
数组定义为20个字节,而for循环判断条件应为<20

  uint8_t oldrelay[20]  = { 0U };
  for ( i = INDUCTOR_160nH; i <= 20; i++ )
    {
        oldrelay[ i ] = SET;
        relay[ i ] = RESET;
    }

2.warning: excess elements in array initializer**

数组元素比定义元素多

3.passing argument 1 of ‘sprintf’ discards ‘volatile’ qualifier from pointer target type**

加上强制转换
volatile uint8_t str[10];
sprintf((char*)str,“0”);

4 in expansion of macro

宏定义错误
在头文件中避免短宏定义,容易重复;例如
//#define SIZE 24
prop_name 参数为 SIZE
LV_STYLE_##prop_name
预编译为 LV_STYLE_24 出错

你可能感兴趣的:(调试)