Do not leave files behind in /tmp from testing.

I noticed that glibc testsuite runs left several files behind in /tmp
(or TMPDIR, if different).  The problem was testcases that generate a
template for mkstemp / mkstemp64, ending with XXXXXX, then pass that
template to add_temp_file before calling mkstemp / mkstemp64, meaning
that the template ending with XXXXXX is stored in the list of
temporary files to delete (add_temp_file uses strdup so that the
original string doesn't need to stay live), not the actual filename as
determined by mkstemp / mkstemp64.  This patch fixes those tests to
call add_temp_file later.

Tested for x86_64 (that the files are no longer left behind by a
testsuite run and the modified tests still pass).

	* io/test-lfs.c (do_prepare): Do not call add_temp_file until
	after mkstemp64.
	* login/tst-utmp.c (do_prepare): Likewise.
	* rt/tst-aio.c (do_prepare): Likewise.
	* rt/tst-aio64.c (do_prepare): Likewise.

2 files changed, 2 insertions, 2 deletions

diff --git a/rt/tst-aio.c b/rt/tst-aio.c
index 783907ea80..007ef6c68f 100644
--- a/rt/tst-aio.c
+++ b/rt/tst-aio.c
@@ -54,12 +54,12 @@ do_prepare (int argc, char *argv[])
   name = malloc (name_len + sizeof ("/aioXXXXXX"));
   mempcpy (mempcpy (name, test_dir, name_len),
 	   "/aioXXXXXX", sizeof ("/aioXXXXXX"));
-  add_temp_file (name);
 
   /* Open our test file.   */
   fd = mkstemp (name);
   if (fd == -1)
     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
+  add_temp_file (name);
 }
 
 
diff --git a/rt/tst-aio64.c b/rt/tst-aio64.c
index 3a9ae797b1..b315eec727 100644
--- a/rt/tst-aio64.c
+++ b/rt/tst-aio64.c
@@ -55,12 +55,12 @@ do_prepare (int argc, char *argv[])
   name = malloc (name_len + sizeof ("/aioXXXXXX"));
   mempcpy (mempcpy (name, test_dir, name_len),
 	   "/aioXXXXXX", sizeof ("/aioXXXXXX"));
-  add_temp_file (name);
 
   /* Open our test file.   */
   fd = mkstemp (name);
   if (fd == -1)
     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
+  add_temp_file (name);
 }