Merge branch 'PHP-7.4'

* PHP-7.4:
  Fixed bug #80049

Author: nikic

Zend/tests/bug80049.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Bug #80049: Memleak when coercing integers to string via variadic argument
+--FILE--
+<?php
+function coerceToString(string ...$strings) {
+    var_dump($strings);
+}
+coerceToString(...[123]);
+?>
+--EXPECT--
+array(1) {
+  [0]=>
+  string(3) "123"
+}

Zend/zend_vm_def.h

@@ -5463,6 +5463,7 @@ ZEND_VM_HANDLER(164, ZEND_RECV_VARIADIC, NUM, UNUSED, CACHE_SLOT)
 		ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(params)) {
 			zval *param = EX_VAR_NUM(EX(func)->op_array.last_var + EX(func)->op_array.T);
 			if (UNEXPECTED(ZEND_TYPE_IS_SET(arg_info->type))) {
+				ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS);
 				do {
 					if (UNEXPECTED(!zend_verify_variadic_arg_type(EX(func), arg_info, arg_num, param, CACHE_ADDR(opline->extended_value)))) {
 						ZEND_HASH_FILL_FINISH();

Zend/zend_vm_execute.h

@@ -3907,6 +3907,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_RECV_VARIADIC_SPEC_UNUSED_HAND
 		ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(params)) {
 			zval *param = EX_VAR_NUM(EX(func)->op_array.last_var + EX(func)->op_array.T);
 			if (UNEXPECTED(ZEND_TYPE_IS_SET(arg_info->type))) {
+				ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS);
 				do {
 					if (UNEXPECTED(!zend_verify_variadic_arg_type(EX(func), arg_info, arg_num, param, CACHE_ADDR(opline->extended_value)))) {
 						ZEND_HASH_FILL_FINISH();