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       0008-longjmp.c - scc - simple c99 compiler
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       ---
       0008-longjmp.c (471B)
       ---
            1 #include <setjmp.h>
            2 #include <stdio.h>
            3 
            4 /*
            5 output:
            6 test 1
            7 i = 1, v = 2
            8 test 2
            9 i = 2, v = 3
           10 end:
           11 */
           12 
           13 jmp_buf recover;
           14 
           15 void
           16 test(char *s, int val)
           17 {
           18         puts(s);
           19         longjmp(recover, val);
           20 }
           21 
           22 int
           23 main()
           24 {
           25         static int i;
           26         auto volatile int v;
           27 
           28         i = 0;
           29         v = 1;
           30         if (!setjmp(recover)) {
           31                 i = 1;
           32                 v = 2;
           33                 test("test 1", 1);
           34         }
           35         printf("i = %d, v = %d\n", i, v);
           36 
           37         if (!setjmp(recover)) {
           38                 i = 2;
           39                 v = 3;
           40                 test("test 2", 0);
           41         }
           42         printf("i = %d, v = %d\n", i, v);
           43 
           44         return 0;
           45 }