posix/tst-spawn5 failes under make -j

[Florian Weimer <fweimer@redhat.com>]

This patch adds some additional diagonstics:

diff --git a/posix/tst-spawn5.c b/posix/tst-spawn5.c
index 277b848794..5ba7c7fadb 100644
--- a/posix/tst-spawn5.c
+++ b/posix/tst-spawn5.c
@@ -116,7 +116,11 @@ handle_restart (int argc, char *argv[])
 	  fds[i].found = found = true;
 
       if (!found)
-        FAIL_EXIT1 ("unexpected open file descriptor: %ld", fd);
+	{
+	  char *path = xasprintf ("/proc/self/fd/%s", e->d_name);
+	  char *resolved = xreadlink (path);
+	  FAIL_EXIT1 ("unexpected open file descriptor %ld: %s", fd, resolved);
+	}
     }
   closedir (dirp);
 
It's the pipe from the make job server:

error: tst-spawn5.c:122: unexpected open file descriptor 3: pipe:[9958839]

I think the test needs to be changed so that lowfd is passed across the
restart, and checking only considers descriptors >= lowfd.

Comments?

Thanks,
Florian