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#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#define TST int i, a[2], b[2]; \
for (i = 0; i < 2; i++) a[i] = 0; \
for (i = 0; i < 2; i++) b[i] = 0
static jmp_buf jmp;
static void tst1 (void)
{
TST;
longjmp(jmp, 1);
}
static void tst2(void)
{
jmp_buf jmp;
setjmp (jmp);
TST;
tst1();
}
static void tst3 (jmp_buf loc)
{
TST;
longjmp(loc, 1);
}
static void tst4(jmp_buf loc)
{
jmp_buf jmp;
setjmp (jmp);
TST;
tst3(loc);
}
static void tst (void)
{
jmp_buf loc;
static int cnt;
cnt = 0;
if (setjmp (jmp) == 0) {
TST;
tst2();
}
else {
cnt++;
}
if (setjmp (loc) == 0) {
TST;
tst4(loc);
}
else {
cnt++;
}
if (cnt != 2)
printf ("incorrect cnt %d\n", cnt);
}
static jmp_buf buf1;
static jmp_buf buf2;
static int *p;
static int n_x = 6;
static int g_counter;
static void stack (void)
{
static int counter;
static int way_point1;
static int way_point2;
counter = 0;
way_point1 = 3;
way_point2 = 2;
g_counter = 0;
if (setjmp (buf1) != 101) {
int a[n_x];
g_counter++;
p = &a[0];
if (g_counter < 5)
longjmp (buf1, 2);
else if (g_counter == 5)
longjmp (buf1, 101);
else {
setjmp (buf2);
longjmp (buf1, 101);
}
}
way_point1--;
if (counter == 0) {
counter++;
{
int a[n_x];
g_counter++;
p = &a[0];
if (g_counter < 5)
longjmp (buf1, 2);
else if (g_counter == 5)
longjmp (buf1, 101);
else {
setjmp (buf2);
longjmp (buf1, 101);
}
}
}
way_point2--;
if (counter == 1) {
counter++;
longjmp (buf2, 2);
}
if (!(way_point1 == 0 && way_point2 == 0 &&
g_counter == 6 && counter == 2))
printf ("Failed %d %d %d %d\n",
way_point1, way_point2, g_counter, counter);
}
static jmp_buf env;
static int last_value;
static void jump (int val)
{
longjmp (env, val);
}
static void check (void)
{
int value;
last_value = -1;
value = setjmp (env);
if (value != last_value + 1) {
printf ("incorrect value %d %d\n",
value, last_value + 1);
return;
}
last_value = value;
switch (value) {
case 0:
jump (0);
default:
if (value < 10)
jump (value + 1);
}
}
int
main (void)
{
int i;
for (i = 0; i < 10; i++) {
tst();
stack();
check();
}
return 0;
}
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