From: Thomas Lamprecht <t.lamprecht@proxmox.com>
Date: Tue, 23 Jul 2019 07:04:00 +0000 (+0200)
Subject: array_intersect: followup: early exit if first empty intersection found
X-Git-Url: https://git.proxmox.com/?p=pve-common.git;a=commitdiff_plain;h=26a68cf6d8708a1bb4be192f756cb958282b4381

array_intersect: followup: early exit if first empty intersection found

no point in trying more

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
---

diff --git a/src/PVE/Tools.pm b/src/PVE/Tools.pm
index 9b5614f..a9addcd 100644
--- a/src/PVE/Tools.pm
+++ b/src/PVE/Tools.pm
@@ -1677,6 +1677,7 @@ sub array_intersect {
 	foreach my $element (keys %count) {
 	    push @$return_arr, $element if $count{$element} > 1;
 	}
+	last if scalar(@$return_arr) == 0; # empty intersection, early exit
     }
 
     return $return_arr;