Mercurial > hg > Members > kaito > longjump
view global_longjump.c @ 0:dee9711aeb06
the first commit
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Tue, 12 Nov 2013 11:32:39 +0900 |
parents | |
children | e6aa3b678e4a |
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#include <stdio.h> #include <setjmp.h> #include <stdlib.h> int retval; __code code1(int n,void *__return,void *__enviroment){ void(*ret)(int,void *); printf("code1\n"); ret = (void(*)(int,void *))__return; ret(n,__enviroment); } void *return1 (int n,void* env){ printf("return1\n"); retval = n; longjmp(*(jmp_buf*)env,1); } int main1 (){ void *__return; void *__enviroment; printf("main1 entry\n"); __enviroment = (void*)malloc(sizeof(jmp_buf)); if (setjmp(__enviroment)){ free(__enviroment); printf("main1 return\n"); return retval; } __return = (void*)return1; goto code1(30,__return,__enviroment); return 0; } int main (){ int n; n = main1(); printf("returned\n"); printf("return = %d\n",n); return 1; }