Don't generate array iterators when the length of the array is always 0.

(bug #6140)

diff --git a/pidl/lib/Parse/Pidl/Samba4/NDR/Parser.pm b/pidl/lib/Parse/Pidl/Samba4/NDR/Parser.pm
index 0e4a7e22894b6b12ef01dd4890e2fed723c45cf2..34aebc7f0fb112265df27386224f101ff13ec7b5 100644 (file)
--- a/pidl/lib/Parse/Pidl/Samba4/NDR/Parser.pm
+++ b/pidl/lib/Parse/Pidl/Samba4/NDR/Parser.pm
@@ -586,9 +586,15 @@ sub ParseElementPushLevel
                my $length = ParseExpr($l->{LENGTH_IS}, $env, $e->{ORIGINAL});
                my $counter = "cntr_$e->{NAME}_$l->{LEVEL_INDEX}";
 
+               my $array_pointless = ($length eq "0");
+
+               if ($array_pointless) {
+                       warning($e->{ORIGINAL}, "pointless array `$e->{NAME}' will always have size 0");
+               }
+
                $var_name = get_array_element($var_name, $counter);
 
-               if (($primitives and not $l->{IS_DEFERRED}) or ($deferred and $l->{IS_DEFERRED})) {
+               if ((($primitives and not $l->{IS_DEFERRED}) or ($deferred and $l->{IS_DEFERRED})) and not $array_pointless) {
                        $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
                        $self->indent;
                        $self->ParseElementPushLevel($e, GetNextLevel($e, $l), $ndr, $var_name, $env, 1, 0);
@@ -596,7 +602,7 @@ sub ParseElementPushLevel
                        $self->pidl("}");
                }
 
-               if ($deferred and ContainsDeferred($e, $l)) {
+               if ($deferred and ContainsDeferred($e, $l) and not $array_pointless) {
                        $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
                        $self->indent;
                        $self->ParseElementPushLevel($e, GetNextLevel($e, $l), $ndr, $var_name, $env, 0, 1);