1 files changed, 44 insertions, 0 deletions
diff --git a/sim/testsuite/cris/c/seek4.c b/sim/testsuite/cris/c/seek4.c
new file mode 100644
index 0000000..16f3bb0
--- /dev/null
+++ b/sim/testsuite/cris/c/seek4.c
@@ -0,0 +1,44 @@
+/* Check for a sim bug, whereby an invalid seek (to a negative offset)
+   did not return an error.  */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+int
+main (void)
+{
+  FILE *f;
+  const char fname[] = "sk1test.dat";
+  const char tsttxt[]
+    = "A random line of text, used to test correct read, write and seek.\n";
+  char buf[sizeof tsttxt] = "";
+  int fd;
+
+  f = fopen (fname, "wb");
+  if (f == NULL
+      || fwrite (tsttxt, 1, strlen (tsttxt), f) != strlen (tsttxt)
+      || fclose (f) != 0)
+    {
+      printf ("fail\n");
+      exit (1);
+    }
+
+  fd = open (fname, O_RDONLY);
+  if (fd < 0
+      || lseek (fd, -1L, SEEK_CUR) != -1
+      || errno != EINVAL
+      || read (fd, buf, strlen (tsttxt)) != strlen (tsttxt)
+      || strcmp (buf, tsttxt) != 0)
+    {
+      printf ("fail\n");
+      exit (1);
+    }
+
+  printf ("pass\n");
+  exit (0);
+}