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/* Check that TRT happens for pipe corner cases.
#notarget: cris*-*-elf
*/
#include <stddef.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
void err (const char *s)
{
perror (s);
abort ();
}
int main (void)
{
int pip[2];
char c;
int pipemax;
if (pipe (pip) != 0)
err ("pipe");
#ifdef PIPE_MAX
pipemax = PIPE_MAX;
#else
pipemax = fpathconf (pip[1], _PC_PIPE_BUF);
#endif
if (pipemax <= 0)
{
fprintf (stderr, "Bad pipemax %d\n", pipemax);
abort ();
}
/* Writing to wrong end of pipe. */
if (write (pip[0], "argh", 1) != -1
|| errno != EBADF)
err ("write pipe");
errno = 0;
/* Reading from wrong end of pipe. */
if (read (pip[1], &c, 1) != -1
|| errno != EBADF)
err ("write pipe");
errno = 0;
if (close (pip[0]) != 0)
err ("close");
if (signal (SIGPIPE, SIG_IGN) != SIG_DFL)
err ("signal");
/* Writing to pipe with closed read end. */
if (write (pip[1], "argh", 1) != -1
|| errno != EPIPE)
err ("write closed");
printf ("pass\n");
exit (0);
}
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