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OS/pintos-env/pintos/tests/userprog/write-stdin.c

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/* Try writing to fd 0 (stdin),
which may just fail or terminate the process with -1 exit
code. */
#include <syscall.h>
#include "tests/lib.h"
#include "tests/main.h"
void
test_main (void)
{
char buf = 123;
write (0, &buf, 1);
}