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21
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1 #include<stdio.h>
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2 #include<stdlib.h>
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3
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4 #define DEBUG 1
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5 #ifdef DEBUG
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6 #define log(f, args...) \
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7 fprintf(stderr, "in %s: "f, __FUNCTION__, ## args)
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8 #else
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9 #define log(f, args...) ;
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10 #endif
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11
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12 __code
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13 exitter(int a)
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14 {
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15 exit(0);
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16 }
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17
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18 __code
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19 cs0(int x, int y)
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20 {
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21 log("x = %d, y = %d.\n", x, y);
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22 log("will exit with code %d.\n", x*y);
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23 goto exitter(x*y);
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24 }
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25
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26 void
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27 continuation(int a)
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28 {
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29 log("go code segment cs0\n");
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30 goto cs0(a, a*20);
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31 log("Error: continuation reachs bad region.\n");
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32 }
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33
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34 int
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35 main(int argc, char **argv)
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36 {
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37 int a;
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38 if (argc>2) {
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39 a = atoi(argv[1]);
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40 }
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41
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42 continuation(20);
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43 }
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