commit 02cd5c1a8d033d7f91fea12a66bb44d1bbf85f76
Author: Florian Weimer <fweimer@redhat.com>
Date:   Sat Dec 1 21:43:36 2018 +0100

    support: Close original descriptors in support_capture_subprocess

diff --git a/support/support_capture_subprocess.c b/support/support_capture_subprocess.c
index 6d2029e13bd6ae73..93f6ea310290000a 100644
--- a/support/support_capture_subprocess.c
+++ b/support/support_capture_subprocess.c
@@ -59,8 +59,12 @@ support_capture_subprocess (void (*callback) (void *), void *closure)
 
   int stdout_pipe[2];
   xpipe (stdout_pipe);
+  TEST_VERIFY (stdout_pipe[0] > STDERR_FILENO);
+  TEST_VERIFY (stdout_pipe[1] > STDERR_FILENO);
   int stderr_pipe[2];
   xpipe (stderr_pipe);
+  TEST_VERIFY (stderr_pipe[0] > STDERR_FILENO);
+  TEST_VERIFY (stderr_pipe[1] > STDERR_FILENO);
 
   TEST_VERIFY (fflush (stdout) == 0);
   TEST_VERIFY (fflush (stderr) == 0);
@@ -72,6 +76,8 @@ support_capture_subprocess (void (*callback) (void *), void *closure)
       xclose (stderr_pipe[0]);
       xdup2 (stdout_pipe[1], STDOUT_FILENO);
       xdup2 (stderr_pipe[1], STDERR_FILENO);
+      xclose (stdout_pipe[1]);
+      xclose (stderr_pipe[1]);
       callback (closure);
       _exit (0);
     }