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#include <sys/types.h>
#include <sys/wait.h>
#include <assert.h>
#if defined(TEST_CLONE)
#include <sched.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <unistd.h>
int g_val = 0;
void parent_func() {
g_val = 1;
printf("function run in parent\n");
}
int child_func(void *unused) {
// we need to avoid memory modifications for vfork(), yet we want
// to be able to test watchpoints, so do the next best thing
// and restore the original value
g_val = 2;
g_val = 0;
return 0;
}
int main() {
alignas(uintmax_t) char stack[4096];
#if defined(TEST_CLONE)
pid_t pid = clone(child_func, &stack[sizeof(stack)], 0, NULL);
#elif defined(TEST_FORK)
pid_t pid = TEST_FORK();
if (pid == 0)
_exit(child_func(NULL));
#endif
assert(pid != -1);
parent_func();
int status, wait_flags = 0;
#if defined(TEST_CLONE)
wait_flags = __WALL;
#endif
pid_t waited = waitpid(pid, &status, wait_flags);
assert(waited == pid);
assert(WIFEXITED(status));
printf("child exited: %d\n", WEXITSTATUS(status));
return 0;
}
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