diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..22d0d82
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+vendor
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..ae48b77
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,21 @@
+{
+    "name": "derrabus/symfony-32395-reproducer",
+    "type": "project",
+    "description": "Reproducer for symfony/symfony#32395",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Alexander M. Turek",
+            "email": "me@derrabus.de"
+        }
+    ],
+    "require": {
+        "php": "^7.1.9",
+        "symfony/config": "^3.4"
+    },
+    "autoload": {
+        "psr-4": {
+            "Rabus\\Symfony32395Reproducer\\": "src"
+        }
+    }
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..3b52976
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,192 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "2933c328c8fc807f5c8fa3999f49259c",
+    "packages": [
+        {
+            "name": "symfony/config",
+            "version": "v3.4.29",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/config.git",
+                "reference": "29a33f66194fbe2ed4555981810f15fd8440e4a8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/config/zipball/29a33f66194fbe2ed4555981810f15fd8440e4a8",
+                "reference": "29a33f66194fbe2ed4555981810f15fd8440e4a8",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.5.9|>=7.0.8",
+                "symfony/filesystem": "~2.8|~3.0|~4.0",
+                "symfony/polyfill-ctype": "~1.8"
+            },
+            "conflict": {
+                "symfony/dependency-injection": "<3.3",
+                "symfony/finder": "<3.3"
+            },
+            "require-dev": {
+                "symfony/dependency-injection": "~3.3|~4.0",
+                "symfony/event-dispatcher": "~3.3|~4.0",
+                "symfony/finder": "~3.3|~4.0",
+                "symfony/yaml": "~3.0|~4.0"
+            },
+            "suggest": {
+                "symfony/yaml": "To use the yaml reference dumper"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.4-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Config\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Config Component",
+            "homepage": "https://symfony.com",
+            "time": "2019-05-30T15:47:52+00:00"
+        },
+        {
+            "name": "symfony/filesystem",
+            "version": "v4.3.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/filesystem.git",
+                "reference": "b9896d034463ad6fd2bf17e2bf9418caecd6313d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/b9896d034463ad6fd2bf17e2bf9418caecd6313d",
+                "reference": "b9896d034463ad6fd2bf17e2bf9418caecd6313d",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1.3",
+                "symfony/polyfill-ctype": "~1.8"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Filesystem\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Filesystem Component",
+            "homepage": "https://symfony.com",
+            "time": "2019-06-23T08:51:25+00:00"
+        },
+        {
+            "name": "symfony/polyfill-ctype",
+            "version": "v1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-ctype.git",
+                "reference": "82ebae02209c21113908c229e9883c419720738a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/82ebae02209c21113908c229e9883c419720738a",
+                "reference": "82ebae02209c21113908c229e9883c419720738a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "suggest": {
+                "ext-ctype": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.11-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                },
+                {
+                    "name": "Gert de Pagter",
+                    "email": "BackEndTea@gmail.com"
+                }
+            ],
+            "description": "Symfony polyfill for ctype functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "ctype",
+                "polyfill",
+                "portable"
+            ],
+            "time": "2019-02-06T07:57:58+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": {
+        "php": "^7.1.9"
+    },
+    "platform-dev": []
+}
diff --git a/src/TestClass.php b/src/TestClass.php
new file mode 100644
index 0000000..0b2bea9
--- /dev/null
+++ b/src/TestClass.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Rabus\Symfony32395Reproducer;
+
+final class TestClass implements \InvalidInterface
+{
+}
diff --git a/test.php b/test.php
new file mode 100644
index 0000000..a05723a
--- /dev/null
+++ b/test.php
@@ -0,0 +1,15 @@
+<?php
+
+use Rabus\Symfony32395Reproducer\TestClass;
+use Symfony\Component\Config\Resource\ClassExistenceResource;
+
+require __DIR__.'/vendor/autoload.php';
+
+$resource = new ClassExistenceResource(TestClass::class);
+
+try {
+    $resource->isFresh(0);
+} catch (Throwable $e) {
+    printf('Caught %s!', get_class($e));
+}
+echo "\n";