diff --git a/ext/dom/document.c b/ext/dom/document.c
index 8c5441862056..b46722d854c5 100644
--- a/ext/dom/document.c
+++ b/ext/dom/document.c
@@ -1597,12 +1597,16 @@ PHP_METHOD(DOMDocument, save)
 	libxml_doc_props const* doc_props = dom_get_doc_props_read_only(intern->document);
 	bool format = doc_props->formatoutput;
 	if (options & LIBXML_SAVE_NOEMPTYTAG) {
+		ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
 		saveempty = xmlSaveNoEmptyTags;
 		xmlSaveNoEmptyTags = 1;
+		ZEND_DIAGNOSTIC_IGNORED_END
 	}
 	zend_long bytes = intern->document->handlers->dump_doc_to_file(file, docp, format, (const char *) docp->encoding);
 	if (options & LIBXML_SAVE_NOEMPTYTAG) {
+		ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
 		xmlSaveNoEmptyTags = saveempty;
+		ZEND_DIAGNOSTIC_IGNORED_END
 	}
 	if (bytes == -1) {
 		RETURN_FALSE;
@@ -1643,10 +1647,14 @@ static void dom_document_save_xml(INTERNAL_FUNCTION_PARAMETERS, zend_class_entry
 
 		/* Save libxml2 global, override its value, and restore after saving (don't move me or risk breaking the state
 		 * w.r.t. the implicit return in DOM_GET_OBJ). */
+		ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
 		old_xml_save_no_empty_tags = xmlSaveNoEmptyTags;
 		xmlSaveNoEmptyTags = (options & LIBXML_SAVE_NOEMPTYTAG) ? 1 : 0;
+		ZEND_DIAGNOSTIC_IGNORED_END
 		res = intern->document->handlers->dump_node_to_str(docp, node, format, (const char *) docp->encoding);
+		ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
 		xmlSaveNoEmptyTags = old_xml_save_no_empty_tags;
+		ZEND_DIAGNOSTIC_IGNORED_END
 	} else {
 		int converted_options = XML_SAVE_AS_XML;
 		if (options & XML_SAVE_NO_DECL) {
@@ -1657,10 +1665,14 @@ static void dom_document_save_xml(INTERNAL_FUNCTION_PARAMETERS, zend_class_entry
 		}
 
 		/* Save libxml2 global, override its value, and restore after saving. */
+		ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
 		old_xml_save_no_empty_tags = xmlSaveNoEmptyTags;
 		xmlSaveNoEmptyTags = (options & LIBXML_SAVE_NOEMPTYTAG) ? 1 : 0;
+		ZEND_DIAGNOSTIC_IGNORED_END
 		res = intern->document->handlers->dump_doc_to_str(docp, converted_options, (const char *) docp->encoding);
+		ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
 		xmlSaveNoEmptyTags = old_xml_save_no_empty_tags;
+		ZEND_DIAGNOSTIC_IGNORED_END
 	}
 
 	if (!res) {
diff --git a/ext/dom/xml_serializer.c b/ext/dom/xml_serializer.c
index a4b46082b0ee..7684057a391c 100644
--- a/ext/dom/xml_serializer.c
+++ b/ext/dom/xml_serializer.c
@@ -1097,7 +1097,10 @@ static int dom_xml_serialize_element_node(
 	/* 14. If ns is the HTML namespace, and the node's list of children is empty, and the node's localName matches
 	 *     any one of the following void elements: ... */
 	if (element->children == NULL) {
-		if (xmlSaveNoEmptyTags) {
+		ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
+		int saveNoEmptyTags = xmlSaveNoEmptyTags;
+		ZEND_DIAGNOSTIC_IGNORED_END
+		if (saveNoEmptyTags) {
 			/* Do nothing, use the <x></x> closing style. */
 		} else if (php_dom_ns_is_fast(element, php_dom_ns_is_html_magic_token)) {
 			size_t name_length = strlen((const char *) element->name);
diff --git a/ext/intl/tests/msgfmt_format_intlcalendar_variant4.phpt b/ext/intl/tests/msgfmt_format_intlcalendar_variant4.phpt
index 014bdd4749bc..9436a9e95438 100644
--- a/ext/intl/tests/msgfmt_format_intlcalendar_variant4.phpt
+++ b/ext/intl/tests/msgfmt_format_intlcalendar_variant4.phpt
@@ -29,4 +29,4 @@ echo "msgf2: ", $msgf->format(array($time, 'date')), " ",
 ?>
 --EXPECTF--
 Deprecated: Calling IntlGregorianCalendar::__construct() with more than 2 arguments is deprecated, use either IntlGregorianCalendar::createFromDate() or IntlGregorianCalendar::createFromDateTime() instead in %s on line %d
-quinta-feira, 17 de maio de 2012 5:35:36 da tarde ptlis
+quinta-feira, 17 de maio de 2012 5:35:36 %r(da tarde|p.m.)%r ptlis
diff --git a/ext/intl/tests/timezone_getDisplayName_variant4.phpt b/ext/intl/tests/timezone_getDisplayName_variant4.phpt
index 39d71f5aa201..ccde7f8e0ea7 100644
--- a/ext/intl/tests/timezone_getDisplayName_variant4.phpt
+++ b/ext/intl/tests/timezone_getDisplayName_variant4.phpt
@@ -19,12 +19,12 @@ var_dump($lsb->getDisplayName(false, IntlTimeZone::DISPLAY_SHORT_COMMONLY_USED))
 var_dump($lsb->getDisplayName(false, IntlTimeZone::DISPLAY_GENERIC_LOCATION));
 
 ?>
---EXPECT--
-string(3) "GMT"
+--EXPECTF--
+string(%d) "%r(GMT|GMT\+0)%r"
 string(30) "Western European Standard Time"
 string(13) "Portugal Time"
 string(21) "Western European Time"
 string(5) "+0000"
-string(3) "GMT"
-string(3) "GMT"
+string(%d) "%r(GMT|GMT\+00:00)%r"
+string(%d) "%r(GMT|GMT\+0)%r"
 string(13) "Portugal Time"
diff --git a/ext/libxml/libxml.c b/ext/libxml/libxml.c
index f51e01cdf504..0105106d9531 100644
--- a/ext/libxml/libxml.c
+++ b/ext/libxml/libxml.c
@@ -813,9 +813,12 @@ static xmlParserInputPtr php_libxml_external_entity_loader(const char *URL,
 				} else {
 					/* make stream not being closed when the zval is freed */
 					GC_ADDREF(stream->res);
+
+					ZEND_DIAGNOSTIC_IGNORED_START("-Wdeprecated-declarations")
 					pib->context = stream;
 					pib->readcallback = php_libxml_streams_IO_read;
 					pib->closecallback = php_libxml_streams_IO_close;
+					ZEND_DIAGNOSTIC_IGNORED_END
 
 					ret = xmlNewIOInputStream(context, pib, enc);
 					if (ret == NULL) {
diff --git a/ext/standard/tests/http/http_build_query/gh20583.phpt b/ext/standard/tests/http/http_build_query/gh20583.phpt
index c0331a830b1e..5ea0dbe9006b 100644
--- a/ext/standard/tests/http/http_build_query/gh20583.phpt
+++ b/ext/standard/tests/http/http_build_query/gh20583.phpt
@@ -10,11 +10,11 @@ if (getenv('SKIP_ASAN')) {
 }
 ?>
 --INI--
-zend.max_allowed_stack_size=512K
+zend.max_allowed_stack_size=128K
 --FILE--
 <?php
 $a = null;
-for ($i = 0; $i < 5000; $i++) {
+for ($i = 0; $i < 1000; $i++) {
  $a = [$i => $a];
 }
 try {