using ReflectionEnum instead

Author: yceruto

lib/Doctrine/ORM/Tools/SchemaValidator.php

@@ -22,6 +22,7 @@
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\ClassMetadataInfo;
+use ReflectionEnum;
 use ReflectionNamedType;
 
 use function array_diff;
@@ -36,7 +37,6 @@
 use function class_parents;
 use function count;
 use function get_class;
-use function get_debug_type;
 use function implode;
 use function in_array;
 use function is_a;
@@ -391,7 +391,7 @@ function (array $fieldMapping) use ($class): ?string {
 
                         if (
                             is_a($propertyType, BackedEnum::class, true)
-                            && $metadataFieldType === get_debug_type($propertyType::cases()[0]->value)
+                            && $metadataFieldType === (string) (new ReflectionEnum($propertyType))->getBackingType()
                         ) {
                             if (! isset($fieldMapping['enumType']) || $propertyType === $fieldMapping['enumType']) {
                                 return null;