tests/tests2/115_bound_setjmp.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <setjmp.h>
   4
   5 #define TST   int i, a[2], b[2];                \
   6               for (i = 0; i < 2; i++) a[i] = 0; \
   7               for (i = 0; i < 2; i++) b[i] = 0
   8
   9 static jmp_buf jmp;
  10
  11 static void tst1 (void)
  12 {
  13     TST;
  14     longjmp(jmp, 1);
  15 }
  16
  17 static void tst2(void)
  18 {
  19     jmp_buf jmp;
  20
  21     setjmp (jmp);
  22     TST;
  23     tst1();
  24 }
  25
  26 static void tst3 (jmp_buf loc)
  27 {
  28     TST;
  29     longjmp(loc, 1);
  30 }
  31
  32 static void tst4(jmp_buf loc)
  33 {
  34     jmp_buf jmp;
  35
  36     setjmp (jmp);
  37     TST;
  38     tst3(loc);
  39 }
  40
  41 static void tst (void)
  42 {
  43     jmp_buf loc;
  44     static int cnt;
  45
  46     cnt = 0;
  47     if (setjmp (jmp) == 0) {
  48         TST;
  49         tst2();
  50     }
  51     else {
  52         cnt++;
  53     }
  54     if (setjmp (loc) == 0) {
  55         TST;
  56         tst4(loc);
  57     }
  58     else {
  59         cnt++;
  60     }
  61     if (cnt != 2)
  62         printf ("incorrect cnt %d\n", cnt);
  63 }
  64
  65 static jmp_buf buf1;
  66 static jmp_buf buf2;
  67 static int *p;
  68 static int n_x = 6;
  69 static int g_counter;
  70
  71 static void stack (void)
  72 {
  73     static int counter;
  74     static int way_point1;
  75     static int way_point2;
  76
  77     counter = 0;
  78     way_point1 = 3;
  79     way_point2 = 2;
  80     g_counter = 0;
  81     if (setjmp (buf1) != 101) {
  82         int a[n_x];
  83         g_counter++;
  84         p = &a[0];
  85         if (g_counter < 5)
  86             longjmp (buf1, 2);
  87         else if (g_counter == 5)
  88             longjmp (buf1, 101);
  89         else {
  90             setjmp (buf2);
  91             longjmp (buf1, 101);
  92         }
  93     }
  94
  95     way_point1--;
  96
  97     if (counter == 0) {
  98         counter++;
  99         {
 100             int a[n_x];
 101             g_counter++;
 102             p = &a[0];
 103             if (g_counter < 5)
 104                 longjmp (buf1, 2);
 105             else if (g_counter == 5)
 106                 longjmp (buf1, 101);
 107             else {
 108                 setjmp (buf2);
 109                 longjmp (buf1, 101);
 110             }
 111         }
 112     }
 113
 114     way_point2--;
 115
 116     if (counter == 1) {
 117         counter++;
 118         longjmp (buf2, 2);
 119     }
 120
 121     if (!(way_point1 == 0 && way_point2 == 0 &&
 122           g_counter == 6 && counter == 2))
 123         printf ("Failed %d %d %d %d\n",
 124                 way_point1, way_point2, g_counter, counter);
 125 }
 126
 127 static jmp_buf env;
 128 static int last_value;
 129
 130 static void jump (int val)
 131 {
 132     longjmp (env, val);
 133 }
 134
 135 static void check (void)
 136 {
 137     int value;
 138
 139     last_value = -1;
 140     value = setjmp (env);
 141     if (value != last_value + 1) {
 142         printf ("incorrect value %d %d\n",
 143                 value, last_value + 1);
 144         return;
 145     }
 146     last_value = value;
 147     switch (value) {
 148 #if !(defined(__FreeBSD__) || defined(__NetBSD__))
 149     /* longjmp(jmp_buf, 0) not supported */
 150     case 0:
 151         jump (0);
 152 #endif
 153     default:
 154         if (value < 10)
 155           jump (value + 1);
 156     }
 157 }
 158
 159 int
 160 main (void)
 161 {
 162     int i;
 163
 164     for (i = 0; i < 10;  i++) {
 165         tst();
 166         stack();
 167         check();
 168     }
 169     return 0;
 170 }
 171
 172