glibc/linuxthreads/tst-popen.c

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#include <errno.h>
#include <error.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static void *
dummy (void *x)
{
return NULL;
}
static char buf[sizeof "something\n"];
static int
do_test (void)
{
FILE *f;
pthread_t p;
pthread_create (&p, NULL, dummy, NULL);
f = popen ("echo something", "r");
if (f == NULL)
error (EXIT_FAILURE, errno, "popen failed");
if (fgets (buf, sizeof (buf), f) == NULL)
error (EXIT_FAILURE, 0, "fgets failed");
if (strcmp (buf, "something\n"))
error (EXIT_FAILURE, 0, "read wrong data");
if (pclose (f))
error (EXIT_FAILURE, errno, "pclose returned non-zero");
exit (0);
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"