update from texinfo

[gnulib.git] / tests / test-select-fd.c

diff --git a/tests/test-select-fd.c b/tests/test-select-fd.c
index d362170..ddd2013 100644 (file)
--- a/tests/test-select-fd.c
+++ b/tests/test-select-fd.c
@@ -25,7 +25,7 @@
 int
 main (int argc, char *argv[])
 {
-  if (argc == 3)
+  if (argc == 4)
     {
       char mode = argv[1][0];
 
@@ -35,32 +35,38 @@ main (int argc, char *argv[])
 
          if (fd >= 0)
            {
-             fd_set fds;
-             struct timeval timeout;
-             int ret;
+             const char *result_file_name = argv[3];
+             FILE *result_file = fopen (result_file_name, "wb");
 
-             FD_ZERO (&fds);
-             FD_SET (fd, &fds);
-             timeout.tv_sec = 0;
-             timeout.tv_usec = 10000;
-             ret = (mode == 'r'
-                    ? select (fd + 1, &fds, NULL, NULL, &timeout)
-                    : select (fd + 1, NULL, &fds, NULL, &timeout));
-             if (ret < 0)
+             if (result_file != NULL)
                {
-                 perror ("select failed");
-                 exit (1);
-               }
-             if ((ret == 0) != ! FD_ISSET (fd, &fds))
-               {
-                 fprintf (stderr, "incorrect return value\n");
-                 exit (1);
+                 fd_set fds;
+                 struct timeval timeout;
+                 int ret;
+
+                 FD_ZERO (&fds);
+                 FD_SET (fd, &fds);
+                 timeout.tv_sec = 0;
+                 timeout.tv_usec = 10000;
+                 ret = (mode == 'r'
+                        ? select (fd + 1, &fds, NULL, NULL, &timeout)
+                        : select (fd + 1, NULL, &fds, NULL, &timeout));
+                 if (ret < 0)
+                   {
+                     perror ("select failed");
+                     exit (1);
+                   }
+                 if ((ret == 0) != ! FD_ISSET (fd, &fds))
+                   {
+                     fprintf (stderr, "incorrect return value\n");
+                     exit (1);
+                   }
+                 fprintf (result_file, "%d\n", ret);
+                 exit (0);
                }
-             fprintf (stderr, "%d\n", ret);
-             exit (0);
            }
        }
     }
-  fprintf (stderr, "Usage: test-select-fd mode fd\n");
+  fprintf (stderr, "Usage: test-select-fd mode fd result-file-name\n");
   exit (1);
 }