Minor tweaks.

scripts/test_csmith.pl

@@ -30,7 +30,7 @@
 use strict; 
 use File::stat;
 
-## This is a tester for Csmith itself.
+## This is a simple tester for Csmith itself.
 
 #######################################################################
 
@@ -40,10 +40,12 @@
 my $EXTRA_OPTIONS = "";
 my $CSMITH_HOME = $ENV{"CSMITH_HOME"};
 my $COMPILER = "gcc -w -O0";
-my $VALGRIND = "";
-#my $VALGRIND = "valgrind -q --error-exitcode=66 ";
-my $RUN_PROGRAM = 0;
-#my $RUN_PROGRAM = 1;
+
+#my $VALGRIND = "";
+my $VALGRIND = "valgrind -q --error-exitcode=66 ";
+
+#my $RUN_PROGRAM = 0;
+my $RUN_PROGRAM = 1;
 
 #######################################################################
 
@@ -52,7 +54,7 @@
 # properly parse the return value from system()
 sub runit ($$) {
     my ($cmd, $out) = @_;
-    print "before running $cmd\n";
+    print "about to run '$cmd'\n";
     my $res = system "$cmd";
     my $exit_value  = $? >> 8;
     $exit_value = $? & 127 if ($? & 127);
@@ -61,7 +63,7 @@ ($$)
 
 sub yesno ($) {
     (my $opt) = @_;
-    if (rand()<0.5) {
+    if (rand() < 0.5) {
 	return " --$opt ";
     } else {
 	return " --no-$opt ";
@@ -113,25 +115,25 @@ ($)
 	system "rm -f $ofile";
 	my $cmd2 = "$COMPILER $cfile $HEADER -o $ofile";
 	$res = runit ($cmd2, "csmith.out"); 
-	if ($res!=0 || !(-f $ofile)) {
+	if ($res != 0 || !(-f $ofile)) {
 		print "Failed to compile program generated by $cmd\n";
 		exit (-1);
 	}	    
 
 	if ($RUN_PROGRAM) {
 	    my $cmd3 = "RunSafely.sh 15 1 /dev/null out.txt $VALGRIND ./$ofile";
 	    $res = runit ($cmd3, "out2.txt");
-	    if ($res !=0 && $res != 137) {
+	    if ($res != 0 && $res != 137) {
 		print "Compiled random program died with error code $res\n";
 		exit (-1);
 	    }
-	    if ($res==137) {
+	    if ($res == 137) {
 		print "Timed out.\n";
 	    }
 	}
 
 	$n_good++;
-	print "test case $n_good\n";
+	print "finished with test case $n_good.\n\n";
     }
 }