From 3bce8bce108b5d408c49f4f87929ce9a927f0cd2 Mon Sep 17 00:00:00 2001
From: kasimi <mail@kasimi.net>
Date: Sat, 8 Dec 2018 22:06:19 +0100
Subject: [PATCH] [ticket/15904] Fix counting empty template blocks

PHPBB3-15904
---
 phpBB/phpbb/template/context.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/phpBB/phpbb/template/context.php b/phpBB/phpbb/template/context.php
index 2ba6d185ad..202e29ce00 100644
--- a/phpBB/phpbb/template/context.php
+++ b/phpBB/phpbb/template/context.php
@@ -201,7 +201,8 @@ class context
 			$pos = strpos($blocks[$i], '[');
 			$name = ($pos !== false) ? substr($blocks[$i], 0, $pos) : $blocks[$i];
 			$block = &$block[$name];
-			$index = (!$pos || strpos($blocks[$i], '[]') === $pos) ? (count($block) - 1) : (min((int) substr($blocks[$i], $pos + 1, -1), count($block) - 1));
+			$block_count = empty($block) ? 0 : count($block) - 1;
+			$index = (!$pos || strpos($blocks[$i], '[]') === $pos) ? $block_count : (min((int) substr($blocks[$i], $pos + 1, -1), $block_count));
 			$block = &$block[$index];
 		}