1 files changed, 111 insertions, 0 deletions
diff --git a/sim/testsuite/cris/c/pipe6.c b/sim/testsuite/cris/c/pipe6.c
new file mode 100644
index 0000000..a8830cc
--- /dev/null
+++ b/sim/testsuite/cris/c/pipe6.c
@@ -0,0 +1,111 @@
+/* Check that writing an inordinate amount of data works (somewhat).
+#notarget: cris*-*-elf
+#output: got: a\nexit: 0\n
+   This test-case will *not* work on host (or for real): the first
+   pipemax+1 bytes will be successfully written.  It's just for
+   exercising a rare execution path.  */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <limits.h>
+#include <unistd.h>
+#include <sched.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int pip[2];
+
+int pipemax;
+
+int
+process (void *arg)
+{
+  char *s = arg;
+  char *buf = calloc (pipemax * 100, 1);
+  int ret;
+
+  if (buf == NULL)
+    abort ();
+
+  *buf = *s;
+
+  ret = write (pip[1], buf, pipemax * 100);
+  if (ret != -1 || errno != EFBIG)
+    {
+      perror ("write");
+      abort ();
+    }
+
+  return 0;
+}
+
+int
+main (void)
+{
+  int retcode;
+  int pid;
+  int st = 0;
+  long stack[16384];
+  char buf[1];
+
+  retcode = pipe (pip);
+
+  if (retcode != 0)
+    {
+      fprintf (stderr, "Bad pipe %d\n", retcode);
+      abort ();
+    }
+
+#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 ();
+    }
+
+  pid = clone (process, (char *) stack + sizeof (stack) - 64,
+	       (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
+	       | SIGCHLD, "ab");
+  if (pid <= 0)
+    {
+      fprintf (stderr, "Bad clone %d\n", pid);
+      abort ();
+    }
+
+  while ((retcode = read (pip[0], buf, 1)) == 0)
+    ;
+
+  if (retcode != 1)
+    {
+      fprintf (stderr, "Bad read 1: %d\n", retcode);
+      abort ();
+    }
+
+  printf ("got: %c\n", buf[0]);
+
+  if (close (pip[0]) != 0)
+    {
+      perror ("pip close");
+      abort ();
+    }
+
+  retcode = waitpid (pid, &st, __WALL);
+
+  if (retcode != pid || !WIFEXITED (st))
+    {
+      fprintf (stderr, "Bad wait %d:%d %x\n", pid, retcode, st);
+      perror ("errno");
+      abort ();
+    }
+
+  printf ("exit: %d\n", WEXITSTATUS (st));
+  return 0;
+}