Ensure that PR42399 regression test produces results

ChangeLog

@@ -1,22 +1,28 @@
 2021-05-20  Jacob Bachmeyer  <jcb@gnu.org>
 
+	* dejagnu: Search for a POSIX Awk and validate that at least a
+	simple Awk program actually works.
+	* testsuite/launcher.all/command.exp: Add tests for error produced
+	when no Awk is found and a help message is requested.
+
 	* lib/dejagnu.exp: Avoid reporting next test as UNRESOLVED when
 	reporting error due to missing size(1) while loading file.
 
 	* testsuite/lib/runtest.exp (runtest_copy_nested_testsuite_log):
 	New procedure.  Dumps log from nested run into main test log.
 
+	* testsuite/runtest.main/pr42399.exp (test_pr42399): Revise to
+	ensure that a failure to produce any output at all in the inner
+	test will be detected.  This was discovered on Solaris 10.
+
 	* testsuite/runtest.main/stats.exp: Copy stat.log from nested
 	testsuite run to the main test log upon test failure.
 
 	* testsuite/runtest.main/nested/testsuite/stat.test/unit-sub.exp:
 	Explicitly pass /dev/null to unit-sub.awk because /usr/bin/awk on
 	Solaris 10 does not seem to recognize assignment to ARGV.
-
-	* dejagnu: Search for a POSIX Awk and validate that at least a
-	simple Awk program actually works.
-	* testsuite/launcher.all/command.exp: Add tests for error produced
-	when no Awk is found and a help message is requested.
+	* testsuite/runtest.main/nested/testsuite/bug.test/pr42399-sub.exp:
+	Likewise.
 
 2021-05-18  Jacob Bachmeyer  <jcb@gnu.org>
 

testsuite/runtest.main/nested/testsuite/bug.test/pr42399-sub.exp

@@ -21,5 +21,6 @@
 load_lib dejagnu.exp
 
 if {[info exists N]} {
-    host_execute [which awk] -f [testsuite file -source -test pr42399.awk] N=$N
+    host_execute [which awk] -f [testsuite file -source -test pr42399.awk] \
+	N=$N /dev/null
 }

testsuite/runtest.main/pr42399.exp

@@ -33,7 +33,7 @@ proc test_pr42399 {} {
 
     foreach test_count {5 5000} {
 	set result pass
-	set failures [list]
+	set eof_reached 0
 	set want_num 1
 	set cmd_args [list --local_init nested-init.exp --tool bug \
 			    -a pr42399-sub.exp N=$test_count]
@@ -49,9 +49,15 @@ proc test_pr42399 {} {
 		exp_continue
 	    }
 	    eof {
-		$result "PR42399 test with $test_count inner tests"
+		set eof_reached 1
 	    }
 	}
+	# Were any results at all produced?
+	if { $want_num == 1 } { set result unresolved }
+	# Did Expect report eof?
+	if { ! $eof_reached } { set result unresolved }
+	# emit test result
+	$result "PR42399 test with $test_count inner tests"
     }
 }