Mercurial > hg > Members > kaito > longjump

annotate longjump.c @ 5:4e7858590985

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remove malloc , free and include<stdlib.h>
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sat, 23 Nov 2013 23:31:02 +0900
parents dee9711aeb06
children
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 #include <stdio.h>
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2 #include <setjmp.h>
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3 #include <stdlib.h>
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4
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5 __attribute__((noinline))
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6 __code code1(void *__return,void *__enviroment){
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7 void(*ret)(void *);
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8 printf("code1\n");
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9 ret = (void(*)(void *))__return;
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10 ret(__enviroment);
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11 }
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12
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13 void *return1 (void* env){
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14 printf("return1\n");
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15 longjmp(*(jmp_buf*)env,1);
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16 }
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17
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18 void main1 (){
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19 void *__return;
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20 void *__enviroment;
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21 printf("main1 entry\n");
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22 __enviroment = (void*)malloc(sizeof(jmp_buf));
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23 if (setjmp(__enviroment)){
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24 free(__enviroment);
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25 printf("main1 return\n");
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26 return;
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27 }
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28 __return = (void*)return1;
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29 goto code1(__return,__enviroment);
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30 }
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31
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32 int main (){
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33 main1();
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34 printf("returned\n");
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35 return 1;
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36 }