Merge branch 'PHP-7.2' into PHP-7.3

* PHP-7.2:
  Fixed SKIPIF when --disable-mbregex is used

ext/mbstring/tests/bug77370.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #77370 (Buffer overflow on mb regex functions - fetch_token)
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+if (!extension_loaded('mbstring')) die('skip mbstring extension not available');
+if (!function_exists('mb_split')) die('skip mb_split() not available');
+?>
 --FILE--
 <?php
 var_dump(mb_split("   \xfd",""));

ext/mbstring/tests/bug77371.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #77371 (heap buffer overflow in mb regex functions - compile_string_node)
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+if (!extension_loaded('mbstring')) die('skip mbstring extension not available');
+if (!function_exists('mb_ereg')) die('skip mb_ereg() not available');
+?>
 --FILE--
 <?php
 var_dump(mb_ereg("()0\xfc00000\xfc00000\xfc00000\xfc",""));

ext/mbstring/tests/bug77381.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #77381 (heap buffer overflow in multibyte match_at)
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+if (!extension_loaded('mbstring')) die('skip mbstring extension not available');
+if (!function_exists('mb_ereg')) die('skip mb_ereg() not available');
+?>
 --FILE--
 <?php
 var_dump(mb_ereg("000||0\xfa","0"));

ext/mbstring/tests/bug77418.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #77418 (Heap overflow in utf32be_mbc_to_code)
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+if (!extension_loaded('mbstring')) die('skip mbstring extension not available');
+if (!function_exists('mb_split')) die('skip mb_split() not available');
+?>
 --FILE--
 <?php
 mb_regex_encoding("UTF-32");