New file. Test today's closeout.c change.

tests/misc/close-stdout

@@ -0,0 +1,40 @@
+#!/bin/sh
+# Ensure that several programs work fine, even with stdout initially closed.
+
+if test "$VERBOSE" = yes; then
+  set -x
+  rm --version
+fi
+
+pwd=`pwd`
+t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
+trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
+trap '(exit $?); exit $?' 1 2 13 15
+
+framework_failure=0
+mkdir -p $tmp || framework_failure=1
+cd $tmp || framework_failure=1
+
+if test $framework_failure = 1; then
+  echo "$0: failure in testing framework" 1>&2
+  (exit 1); exit 1
+fi
+
+PATH="$pwd/../..:$PATH"
+export PATH
+
+touch a
+cp a b >&- || fail=1
+test -f b || fail=1
+chmod o-w . >&- || fail=1
+ln a c >&- || fail=1
+rm c >&- || fail=1
+mkdir d >&- || fail=1
+mv d e >&- || fail=1
+rmdir e >&- || fail=1
+touch e >&- || fail=1
+sleep 0 >&- || fail=1
+$pwd/../../src/true >&- || fail=1
+$pwd/../../src/printf '' >&- || fail=1
+
+(exit $fail); exit $fail