Merge branch 'PHP-7.0' into PHP-7.1

* PHP-7.0:
  Fixed bug #74673 (Segfault when cast Reflection object to string with undefined constant)

Conflicts:
	ext/reflection/php_reflection.c

Author: laruence

ext/reflection/php_reflection.c

@@ -468,6 +468,9 @@ static void _class_string(string *str, zend_class_entry *ce, zval *obj, char *in
 
 		ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->constants_table, key, c) {
 			_class_const_string(str, ZSTR_VAL(key), c, ZSTR_VAL(sub_indent.buf));
+			if (UNEXPECTED(EG(exception))) {
+				return;
+			}
 		} ZEND_HASH_FOREACH_END();
 	}
 	string_printf(str, "%s  }\n", indent);
@@ -732,7 +735,10 @@ static void _parameter_string(string *str, zend_function *fptr, struct _zend_arg
 
 			string_write(str, " = ", sizeof(" = ")-1);
 			ZVAL_DUP(&zv, RT_CONSTANT(&fptr->op_array, precv->op2));
-			zval_update_constant_ex(&zv, fptr->common.scope);
+			if (UNEXPECTED(zval_update_constant_ex(&zv, fptr->common.scope) == FAILURE)) {
+				zval_ptr_dtor(&zv);
+				return;
+			}
 			if (Z_TYPE(zv) == IS_TRUE) {
 				string_write(str, "true", sizeof("true")-1);
 			} else if (Z_TYPE(zv) == IS_FALSE) {

ext/reflection/tests/bug74673.phpt

@@ -0,0 +1,22 @@
+--TEST--
+Bug #74673 (Segfault when cast Reflection object to string with undefined constant)
+--FILE--
+<?php
+
+set_error_handler(function() {
+    throw new Exception();
+});
+
+class A
+{
+	public function method($test = PHP_SELF + 1)
+	{
+	}
+}
+
+$class = new ReflectionClass('A');
+
+echo $class;
+?>
+--EXPECTF--
+Fatal error: Method ReflectionClass::__toString() must not throw an exception, caught Exception:  in %sbug74673.php on line %d