Add test for bug #78106

Also add PHP_TEST_EXTRA_ARGS environment variable, which allows
to pass on -c, -d etc flags provided by run-tests.php. Otherwise
we won't get the built-in server to run with opcache.

Author: nikic

ext/opcache/tests/bug78106.phpt

@@ -0,0 +1,22 @@
+--TEST--
+Bug #78106: PHP Fatal error: Uncaught Error: Class 'Phpfastcache\Config\Config' not found
+--XFAIL--
+Not fixed yet
+--FILE--
+<?php
+
+include __DIR__ . "/php_cli_server.inc";
+php_cli_server_start(getenv('TEST_PHP_EXTRA_ARGS'));
+
+echo file_get_contents("http://" . PHP_CLI_SERVER_ADDRESS . "/bug78106_test1.php" );
+echo file_get_contents("http://" . PHP_CLI_SERVER_ADDRESS . "/bug78106_test2.php" );
+echo file_get_contents("http://" . PHP_CLI_SERVER_ADDRESS . "/bug78106_test1.php" );
+
+?>
+--EXPECT--
+included
+done
+included
+done
+included
+done

ext/opcache/tests/bug78106_include.inc

@@ -0,0 +1,3 @@
+<?php
+
+echo "included\n";

ext/opcache/tests/bug78106_test1.php

@@ -0,0 +1,6 @@
+<?php
+
+ini_set('opcache.enable', 0);
+require_once 'bug78106_include.inc';
+
+echo "done\n";

ext/opcache/tests/bug78106_test2.php

@@ -0,0 +1,5 @@
+<?php
+
+require_once 'bug78106_include.inc';
+
+echo "done\n";

run-tests.php

@@ -820,7 +820,7 @@ function save_or_mail_results()
 		if (substr(PHP_OS, 0, 3) == "WIN") {
 			$pass_options .= " -c " . escapeshellarg($conf_passed);
 		} else {
-			$pass_options .= " -c '$conf_passed'";
+			$pass_options .= " -c '" . realpath($conf_passed) . "'";
 		}
 	}
 
@@ -1611,6 +1611,8 @@ function run_test($php, $file, $env)
 
 	settings2params($ini_settings);
 
+	$env['TEST_PHP_EXTRA_ARGS'] = $pass_options . ' ' . $ini_settings;
+
 	// Check if test should be skipped.
 	$info = '';
 	$warn = false;