mktemp: diagnose freopen failure

* src/mktemp [--quiet]: Don't ignore freopen failure.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/mktemp.c b/src/mktemp.c
index ffb21d466..2e6dc7b85 100644
--- a/src/mktemp.c
+++ b/src/mktemp.c
@@ -188,7 +188,9 @@ main (int argc, char **argv)
     {
       /* From here on, redirect stderr to /dev/null.
          A diagnostic from getopt_long, above, would still go to stderr.  */
-      freopen ("/dev/null", "wb", stderr);
+      if (!freopen ("/dev/null", "wb", stderr))
+        error (EXIT_FAILURE, errno,
+               _("failed to redirect stderr to /dev/null"));
     }
 
   n_args = argc - optind;