diff -Nru phpunit-type-3.2.0/ChangeLog.md phpunit-type-3.2.1/ChangeLog.md
--- phpunit-type-3.2.0/ChangeLog.md	2022-09-12 14:47:03.000000000 +0000
+++ phpunit-type-3.2.1/ChangeLog.md	2023-02-03 06:13:03.000000000 +0000
@@ -2,6 +2,12 @@
 
 All notable changes are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## [3.2.1] - 2023-02-03
+
+### Fixed
+
+* [#28](https://github.com/sebastianbergmann/type/pull/28): Potential undefined offset warning/notice
+
 ## [3.2.0] - 2022-09-12
 
 ### Added
@@ -38,6 +44,8 @@
 
 ## [2.3.4] - 2021-06-15
 
+### Fixed
+
 * Fixed regression introduced in 2.3.3
 
 ## [2.3.3] - 2021-06-15 [YANKED]
@@ -139,6 +147,7 @@
 
 * Initial release based on [code contributed by Michel Hartmann to PHPUnit](https://github.com/sebastianbergmann/phpunit/pull/3673)
 
+[3.2.1]: https://github.com/sebastianbergmann/type/compare/3.2.0...3.2.1
 [3.2.0]: https://github.com/sebastianbergmann/type/compare/3.1.0...3.2.0
 [3.1.0]: https://github.com/sebastianbergmann/type/compare/3.0.0...3.1.0
 [3.0.0]: https://github.com/sebastianbergmann/type/compare/2.3.4...3.0.0
diff -Nru phpunit-type-3.2.0/debian/changelog phpunit-type-3.2.1/debian/changelog
--- phpunit-type-3.2.0/debian/changelog	2022-09-15 10:13:16.000000000 +0000
+++ phpunit-type-3.2.1/debian/changelog	2023-02-03 15:02:25.000000000 +0000
@@ -1,3 +1,14 @@
+phpunit-type (3.2.1-1) unstable; urgency=medium
+
+  [ Sebastian Bergmann ]
+  * Prepare release
+
+  [ David Prévot ]
+  * Track version 3 for now (Bookworm?)
+  * Update standards version to 4.6.2, no changes needed.
+
+ -- David Prévot <taffit@debian.org>  Fri, 03 Feb 2023 16:02:25 +0100
+
 phpunit-type (3.2.0-1) unstable; urgency=medium
 
   [ Sebastian Bergmann ]
diff -Nru phpunit-type-3.2.0/debian/control phpunit-type-3.2.1/debian/control
--- phpunit-type-3.2.0/debian/control	2022-08-30 07:45:47.000000000 +0000
+++ phpunit-type-3.2.1/debian/control	2023-02-03 15:01:56.000000000 +0000
@@ -9,7 +9,7 @@
                phpab,
                phpunit,
                pkg-php-tools (>= 1.41~)
-Standards-Version: 4.6.1
+Standards-Version: 4.6.2
 Homepage: https://github.com/sebastianbergmann/type
 Vcs-Git: https://salsa.debian.org/php-team/pear/phpunit-type.git -b debian/latest
 Vcs-Browser: https://salsa.debian.org/php-team/pear/phpunit-type
diff -Nru phpunit-type-3.2.0/debian/watch phpunit-type-3.2.1/debian/watch
--- phpunit-type-3.2.0/debian/watch	2021-04-15 15:13:23.000000000 +0000
+++ phpunit-type-3.2.1/debian/watch	2023-02-03 14:59:06.000000000 +0000
@@ -2,4 +2,4 @@
 options=uversionmangle=s/-?([^\d.]+)/~$1/;tr/A-Z/a-z/,\
 mode=git,gitmode=full,gitexport=all,pgpmode=gittag \
 https://github.com/sebastianbergmann/type \
-refs/tags/v?(\d.+)
+refs/tags/v?(3.+)
diff -Nru phpunit-type-3.2.0/.github/workflows/ci.yml phpunit-type-3.2.1/.github/workflows/ci.yml
--- phpunit-type-3.2.0/.github/workflows/ci.yml	2022-09-12 14:47:03.000000000 +0000
+++ phpunit-type-3.2.1/.github/workflows/ci.yml	2023-02-03 06:13:03.000000000 +0000
@@ -6,6 +6,9 @@
 
 name: "CI"
 
+env:
+  COMPOSER_ROOT_VERSION: "3.2-dev"
+
 permissions:
   contents: read
 
diff -Nru phpunit-type-3.2.0/.phive/phars.xml phpunit-type-3.2.1/.phive/phars.xml
--- phpunit-type-3.2.0/.phive/phars.xml	2022-09-12 14:47:03.000000000 +0000
+++ phpunit-type-3.2.1/.phive/phars.xml	2023-02-03 06:13:03.000000000 +0000
@@ -2,6 +2,6 @@
 <phive xmlns="https://phar.io/phive">
   <phar name="php-cs-fixer" version="^3.0" installed="3.11.0" location="./tools/php-cs-fixer" copy="true"/>
   <phar name="psalm" version="^4.0" installed="4.27.0" location="./tools/psalm" copy="true"/>
-  <phar name="composer" version="^2.0.3" installed="2.4.1" location="./tools/composer" copy="true"/>
-  <phar name="infection" version="^0.26.6" installed="0.26.14" location="./tools/infection" copy="true"/>
+  <phar name="composer" version="^2.0.3" installed="2.4.2" location="./tools/composer" copy="true"/>
+  <phar name="infection" version="^0.26.6" installed="0.26.15" location="./tools/infection" copy="true"/>
 </phive>
diff -Nru phpunit-type-3.2.0/src/type/CallableType.php phpunit-type-3.2.1/src/type/CallableType.php
--- phpunit-type-3.2.0/src/type/CallableType.php	2022-09-12 14:47:03.000000000 +0000
+++ phpunit-type-3.2.1/src/type/CallableType.php	2023-02-03 06:13:03.000000000 +0000
@@ -143,6 +143,10 @@
             return false;
         }
 
+        if (!isset($type->value()[0], $type->value()[1])) {
+            return false;
+        }
+
         if (!is_object($type->value()[0]) || !is_string($type->value()[1])) {
             return false;
         }
@@ -171,6 +175,10 @@
                 return false;
             }
 
+            if (!isset($type->value()[0], $type->value()[1])) {
+                return false;
+            }
+
             if (!is_string($type->value()[0]) || !is_string($type->value()[1])) {
                 return false;
             }
diff -Nru phpunit-type-3.2.0/src/type/IntersectionType.php phpunit-type-3.2.1/src/type/IntersectionType.php
--- phpunit-type-3.2.0/src/type/IntersectionType.php	2022-09-12 14:47:03.000000000 +0000
+++ phpunit-type-3.2.1/src/type/IntersectionType.php	2023-02-03 06:13:03.000000000 +0000
@@ -9,10 +9,10 @@
  */
 namespace SebastianBergmann\Type;
 
-use function array_unique;
 use function assert;
 use function count;
 use function implode;
+use function in_array;
 use function sort;
 
 final class IntersectionType extends Type
@@ -114,13 +114,13 @@
         foreach ($types as $type) {
             assert($type instanceof ObjectType);
 
-            $names[] = $type->className()->qualifiedName();
-        }
+            $classQualifiedName = $type->className()->qualifiedName();
 
-        if (count(array_unique($names)) < count($names)) {
-            throw new RuntimeException(
-                'An intersection type must not contain duplicate types'
-            );
+            if (in_array($classQualifiedName, $names, true)) {
+                throw new RuntimeException('An intersection type must not contain duplicate types');
+            }
+
+            $names[] = $classQualifiedName;
         }
     }
 }
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