本文共 852 字，大约阅读时间需要 2 分钟。

setjmp???????????????????longjmp????????setjmp???????????????jump_buf????????????longjmp?????setjmp????????

?????setjmp????????null?????setjmp????????????????????????setjmp???????longjmp?????????????????????????????setjmp?????longjmp????????????setjmp?????????????????????

???????setjmp???????????????if?switch?while?????????????????????????????

???????setjmp?longjmp????

#include 
   
    #include 
    
     static jmp_buf jump_buffer;noreturn void a(int count) {    ("a(%d) called\n", count);    longjmp(jump_buffer, count + 1);}int main(void) {    volatile int count = 0;    if (setjmp(jump_buffer) != 9) {        a(count++);    }}
    
   

???????setjmp?????????????setjmp?????9?????????a???count?????a????longjmp??????????????setjmp????????????

???????

a(0) calleda(1) calleda(2) calleda(3) calleda(4) calleda(5) calleda(6) calleda(7) calleda(8) called

转载地址：http://pabg.baihongyu.com/