diff --git a/src/Symfony/Component/TypeInfo/Tests/TypeFactoryTest.php b/src/Symfony/Component/TypeInfo/Tests/TypeFactoryTest.php
index 60a0ded22c648..50a6f5a2e6449 100644
--- a/src/Symfony/Component/TypeInfo/Tests/TypeFactoryTest.php
+++ b/src/Symfony/Component/TypeInfo/Tests/TypeFactoryTest.php
@@ -205,5 +205,9 @@ public function testCreateNullable()
new NullableType(new UnionType(new BuiltinType(TypeIdentifier::INT), new BuiltinType(TypeIdentifier::STRING))),
Type::nullable(Type::union(Type::int(), Type::string(), Type::null())),
);
+ $this->assertEquals(
+ new NullableType(new UnionType(new BuiltinType(TypeIdentifier::INT), new BuiltinType(TypeIdentifier::STRING))),
+ Type::union(Type::nullable(Type::int()), Type::string()),
+ );
}
}
diff --git a/src/Symfony/Component/TypeInfo/TypeFactoryTrait.php b/src/Symfony/Component/TypeInfo/TypeFactoryTrait.php
index d32a97276057c..b8e15f209fa00 100644
--- a/src/Symfony/Component/TypeInfo/TypeFactoryTrait.php
+++ b/src/Symfony/Component/TypeInfo/TypeFactoryTrait.php
@@ -266,6 +266,13 @@ public static function union(Type ...$types): UnionType
$isNullable = fn (Type $type): bool => $type instanceof BuiltinType && TypeIdentifier::NULL === $type->getTypeIdentifier();
foreach ($types as $type) {
+ if ($type instanceof NullableType) {
+ $nullableUnion = true;
+ $unionTypes[] = $type->getWrappedType();
+
+ continue;
+ }
+
if ($type instanceof UnionType) {
foreach ($type->getTypes() as $unionType) {
if ($isNullable($type)) {
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