/* * ANSI C stadard, section 3.5.3: "An object that has volatile-qualified * type may be modified in ways unknown to the imple…
volatile 源代码
volatile是一个特征修饰符(typespecifier).volatile的作用是作为指令关键字,确保本条指令不会因编译器的优化而省略,且要求每次直接读值。
extern volatile int dexcn;
extern volatile int dexcn;
extern volatile int i; f(){int j;for(;;)j = i;}
volatile int __dummy = 0xDEADBEEF;
volatile int __dummy = 0xDEADBEEF;
volatile int __dummy = 0xDEADBEEF;
volatile int __dummy = 0xDEADBEEF;
volatile int __dummy = 0xDEADBEEF;
volatile int __dummy = 0xDEADBEEF;