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22 lines
473 B
22 lines
473 B
#include <stdio.h>
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#include <ulib.h>
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int
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main(void) {
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int pid, exit_code;
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if ((pid = fork()) == 0) {
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cprintf("fork ok.\n");
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int i;
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for (i = 0; i < 10; i ++) {
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yield();
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}
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exit(0xbeaf);
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}
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assert(pid > 0);
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assert(waitpid(-1, NULL) != 0);
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assert(waitpid(pid, (void *)0xC0000000) != 0);
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assert(waitpid(pid, &exit_code) == 0 && exit_code == 0xbeaf);
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cprintf("badarg pass.\n");
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return 0;
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}
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