diff --git a/src/Node/Expression/ObjectCreationExpression.php b/src/Node/Expression/ObjectCreationExpression.php
index 9d39be57..061a3137 100644
--- a/src/Node/Expression/ObjectCreationExpression.php
+++ b/src/Node/Expression/ObjectCreationExpression.php
@@ -6,6 +6,7 @@
 
 namespace Microsoft\PhpParser\Node\Expression;
 
+use Microsoft\PhpParser\Node\AttributeGroup;
 use Microsoft\PhpParser\Node\ClassBaseClause;
 use Microsoft\PhpParser\Node\ClassInterfaceClause;
 use Microsoft\PhpParser\Node\ClassMembersNode;
@@ -19,6 +20,9 @@ class ObjectCreationExpression extends Expression {
     /** @var Token */
     public $newKeword;
 
+    /** @var AttributeGroup[]|null optional attributes of an anonymous class. */
+    public $attributes;
+
     /** @var QualifiedName|Variable|Token */
     public $classTypeDesignator;
 
@@ -41,7 +45,8 @@ class ObjectCreationExpression extends Expression {
     public $classMembers;
 
     const CHILD_NAMES = [
-        'newKeword', // TODO
+        'newKeword',
+        'attributes',
         'classTypeDesignator',
         'openParen',
         'argumentExpressionList',
diff --git a/src/Node/Statement/InterfaceDeclaration.php b/src/Node/Statement/InterfaceDeclaration.php
index e11261f5..4a33de01 100644
--- a/src/Node/Statement/InterfaceDeclaration.php
+++ b/src/Node/Statement/InterfaceDeclaration.php
@@ -9,6 +9,7 @@
 use Microsoft\PhpParser\ClassLike;
 use Microsoft\PhpParser\NamespacedNameInterface;
 use Microsoft\PhpParser\NamespacedNameTrait;
+use Microsoft\PhpParser\Node\AttributeGroup;
 use Microsoft\PhpParser\Node\InterfaceBaseClause;
 use Microsoft\PhpParser\Node\InterfaceMembers;
 use Microsoft\PhpParser\Node\StatementNode;
@@ -17,6 +18,9 @@
 class InterfaceDeclaration extends StatementNode implements NamespacedNameInterface, ClassLike {
     use NamespacedNameTrait;
 
+    /** @var AttributeGroup[]|null */
+    public $attributes;
+
     /** @var Token */
     public $interfaceKeyword;
 
@@ -30,6 +34,7 @@ class InterfaceDeclaration extends StatementNode implements NamespacedNameInterf
     public $interfaceMembers;
 
     const CHILD_NAMES = [
+        'attributes',
         'interfaceKeyword',
         'name',
         'interfaceBaseClause',
diff --git a/src/Node/Statement/TraitDeclaration.php b/src/Node/Statement/TraitDeclaration.php
index 9583faf4..05a73264 100644
--- a/src/Node/Statement/TraitDeclaration.php
+++ b/src/Node/Statement/TraitDeclaration.php
@@ -9,6 +9,7 @@
 use Microsoft\PhpParser\ClassLike;
 use Microsoft\PhpParser\NamespacedNameInterface;
 use Microsoft\PhpParser\NamespacedNameTrait;
+use Microsoft\PhpParser\Node\AttributeGroup;
 use Microsoft\PhpParser\Node\StatementNode;
 use Microsoft\PhpParser\Node\TraitMembers;
 use Microsoft\PhpParser\Token;
@@ -16,6 +17,9 @@
 class TraitDeclaration extends StatementNode implements NamespacedNameInterface, ClassLike {
     use NamespacedNameTrait;
 
+    /** @var AttributeGroup[]|null */
+    public $attributes;
+
     /** @var Token */
     public $traitKeyword;
 
@@ -26,6 +30,7 @@ class TraitDeclaration extends StatementNode implements NamespacedNameInterface,
     public $traitMembers;
 
     const CHILD_NAMES = [
+        'attributes',
         'traitKeyword',
         'name',
         'traitMembers'
diff --git a/src/Parser.php b/src/Parser.php
index 5bbb8719..c318c69f 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -711,6 +711,12 @@ private function parseAttributeStatement($parentNode) {
         if ($parentNode instanceof ClassMembersNode) {
             // Create a class element or a MissingMemberDeclaration
             $statement = $this->parseClassElementFn()($parentNode);
+        } elseif ($parentNode instanceof TraitMembers) {
+            // Create a trait element or a MissingMemberDeclaration
+            $statement = $this->parseTraitElementFn()($parentNode);
+        } elseif ($parentNode instanceof InterfaceMembers) {
+            // Create an interface element or a MissingMemberDeclaration
+            $statement = $this->parseInterfaceElementFn()($parentNode);
         } else {
             // Classlikes, anonymous functions, global functions, and arrow functions can have attributes. Global constants cannot.
             if (in_array($this->token->kind, [TokenKind::ClassKeyword, TokenKind::TraitKeyword, TokenKind::InterfaceKeyword, TokenKind::AbstractKeyword, TokenKind::FinalKeyword, TokenKind::FunctionKeyword, TokenKind::FnKeyword], true) ||
@@ -726,6 +732,8 @@ private function parseAttributeStatement($parentNode) {
 
         if ($statement instanceof FunctionLike ||
             $statement instanceof ClassDeclaration ||
+            $statement instanceof TraitDeclaration ||
+            $statement instanceof InterfaceDeclaration ||
             $statement instanceof ClassConstDeclaration ||
             $statement instanceof PropertyDeclaration ||
             $statement instanceof MissingDeclaration ||
@@ -3088,6 +3096,12 @@ private function parseObjectCreationExpression($parentNode) {
         // TODO - add tests for this scenario
         $oldIsParsingObjectCreationExpression = $this->isParsingObjectCreationExpression;
         $this->isParsingObjectCreationExpression = true;
+
+        if ($this->getCurrentToken()->kind === TokenKind::AttributeToken) {
+            // Attributes such as `new #[MyAttr] class` can only be used with anonymous class declarations.
+            // But handle this like $objectCreationExpression->classMembers and leave it up to the applications to detect the invalid combination.
+            $objectCreationExpression->attributes = $this->parseAttributeGroups($objectCreationExpression);
+        }
         $objectCreationExpression->classTypeDesignator =
             $this->eatOptional1(TokenKind::ClassKeyword) ??
             $this->parseExpression($objectCreationExpression);
@@ -3311,6 +3325,9 @@ private function parseInterfaceElementFn() {
                 case TokenKind::FunctionKeyword:
                     return $this->parseMethodDeclaration($parentNode, $modifiers);
 
+                case TokenKind::AttributeToken:
+                    return $this->parseAttributeStatement($parentNode);
+
                 default:
                     $missingInterfaceMemberDeclaration = new MissingMemberDeclaration();
                     $missingInterfaceMemberDeclaration->parent = $parentNode;
@@ -3491,6 +3508,9 @@ private function parseTraitElementFn() {
                 case TokenKind::UseKeyword:
                     return $this->parseTraitUseClause($parentNode);
 
+                case TokenKind::AttributeToken:
+                    return $this->parseAttributeStatement($parentNode);
+
                 default:
                     return $this->parseRemainingPropertyDeclarationOrMissingMemberDeclaration($parentNode, $modifiers);
             }
diff --git a/tests/cases/parser/callExpression14.php.tree b/tests/cases/parser/callExpression14.php.tree
index 690a4456..a7b92daa 100644
--- a/tests/cases/parser/callExpression14.php.tree
+++ b/tests/cases/parser/callExpression14.php.tree
@@ -27,6 +27,7 @@
                                                 "kind": "NewKeyword",
                                                 "textLength": 3
                                             },
+                                            "attributes": null,
                                             "classTypeDesignator": {
                                                 "QualifiedName": {
                                                     "globalSpecifier": null,
diff --git a/tests/cases/parser/interfaceDeclaration1.php.tree b/tests/cases/parser/interfaceDeclaration1.php.tree
index 01061e11..7bbb622d 100644
--- a/tests/cases/parser/interfaceDeclaration1.php.tree
+++ b/tests/cases/parser/interfaceDeclaration1.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration10.php.tree b/tests/cases/parser/interfaceDeclaration10.php.tree
index f874ef4a..73d3248a 100644
--- a/tests/cases/parser/interfaceDeclaration10.php.tree
+++ b/tests/cases/parser/interfaceDeclaration10.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration11.php.tree b/tests/cases/parser/interfaceDeclaration11.php.tree
index 490688eb..af91234d 100644
--- a/tests/cases/parser/interfaceDeclaration11.php.tree
+++ b/tests/cases/parser/interfaceDeclaration11.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration12.php.tree b/tests/cases/parser/interfaceDeclaration12.php.tree
index 9b3df05d..2660976d 100644
--- a/tests/cases/parser/interfaceDeclaration12.php.tree
+++ b/tests/cases/parser/interfaceDeclaration12.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration13.php.tree b/tests/cases/parser/interfaceDeclaration13.php.tree
index 4626be5a..bc9988d2 100644
--- a/tests/cases/parser/interfaceDeclaration13.php.tree
+++ b/tests/cases/parser/interfaceDeclaration13.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration14.php.tree b/tests/cases/parser/interfaceDeclaration14.php.tree
index 60fb48ff..5820afac 100644
--- a/tests/cases/parser/interfaceDeclaration14.php.tree
+++ b/tests/cases/parser/interfaceDeclaration14.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration15.php.tree b/tests/cases/parser/interfaceDeclaration15.php.tree
index 8d1ac378..71c49c78 100644
--- a/tests/cases/parser/interfaceDeclaration15.php.tree
+++ b/tests/cases/parser/interfaceDeclaration15.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration16.php.tree b/tests/cases/parser/interfaceDeclaration16.php.tree
index 09c94bdb..436abcdf 100644
--- a/tests/cases/parser/interfaceDeclaration16.php.tree
+++ b/tests/cases/parser/interfaceDeclaration16.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration2.php.tree b/tests/cases/parser/interfaceDeclaration2.php.tree
index ea6155ee..d992273d 100644
--- a/tests/cases/parser/interfaceDeclaration2.php.tree
+++ b/tests/cases/parser/interfaceDeclaration2.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration3.php.tree b/tests/cases/parser/interfaceDeclaration3.php.tree
index ce5723c7..16146be5 100644
--- a/tests/cases/parser/interfaceDeclaration3.php.tree
+++ b/tests/cases/parser/interfaceDeclaration3.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration4.php.tree b/tests/cases/parser/interfaceDeclaration4.php.tree
index 4746966c..1894ce2f 100644
--- a/tests/cases/parser/interfaceDeclaration4.php.tree
+++ b/tests/cases/parser/interfaceDeclaration4.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration5.php.tree b/tests/cases/parser/interfaceDeclaration5.php.tree
index 126feb61..4c523c43 100644
--- a/tests/cases/parser/interfaceDeclaration5.php.tree
+++ b/tests/cases/parser/interfaceDeclaration5.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration7.php.tree b/tests/cases/parser/interfaceDeclaration7.php.tree
index 6b9ad3cc..2fa52201 100644
--- a/tests/cases/parser/interfaceDeclaration7.php.tree
+++ b/tests/cases/parser/interfaceDeclaration7.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration8.php.tree b/tests/cases/parser/interfaceDeclaration8.php.tree
index c7371d0d..bc9e1ce8 100644
--- a/tests/cases/parser/interfaceDeclaration8.php.tree
+++ b/tests/cases/parser/interfaceDeclaration8.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/interfaceDeclaration9.php.tree b/tests/cases/parser/interfaceDeclaration9.php.tree
index fa9b2b50..02faee75 100644
--- a/tests/cases/parser/interfaceDeclaration9.php.tree
+++ b/tests/cases/parser/interfaceDeclaration9.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "InterfaceDeclaration": {
+                    "attributes": null,
                     "interfaceKeyword": {
                         "kind": "InterfaceKeyword",
                         "textLength": 9
diff --git a/tests/cases/parser/listExpression9.php.tree b/tests/cases/parser/listExpression9.php.tree
index d7f561df..ba4418e5 100644
--- a/tests/cases/parser/listExpression9.php.tree
+++ b/tests/cases/parser/listExpression9.php.tree
@@ -128,6 +128,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "QualifiedName": {
                                             "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression1.php.tree b/tests/cases/parser/objectCreationExpression1.php.tree
index cb6a3944..00ca4152 100644
--- a/tests/cases/parser/objectCreationExpression1.php.tree
+++ b/tests/cases/parser/objectCreationExpression1.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "QualifiedName": {
                                     "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression10.php.tree b/tests/cases/parser/objectCreationExpression10.php.tree
index d7f3808c..42d18bc9 100644
--- a/tests/cases/parser/objectCreationExpression10.php.tree
+++ b/tests/cases/parser/objectCreationExpression10.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "kind": "ClassKeyword",
                                         "textLength": 5
diff --git a/tests/cases/parser/objectCreationExpression11.php.tree b/tests/cases/parser/objectCreationExpression11.php.tree
index d93ec036..1954f9f4 100644
--- a/tests/cases/parser/objectCreationExpression11.php.tree
+++ b/tests/cases/parser/objectCreationExpression11.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "kind": "ClassKeyword",
                                         "textLength": 5
diff --git a/tests/cases/parser/objectCreationExpression12.php.tree b/tests/cases/parser/objectCreationExpression12.php.tree
index d7bae397..baf917af 100644
--- a/tests/cases/parser/objectCreationExpression12.php.tree
+++ b/tests/cases/parser/objectCreationExpression12.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "kind": "ClassKeyword",
                                         "textLength": 5
diff --git a/tests/cases/parser/objectCreationExpression13.php.tree b/tests/cases/parser/objectCreationExpression13.php.tree
index 438d856c..58c78dd1 100644
--- a/tests/cases/parser/objectCreationExpression13.php.tree
+++ b/tests/cases/parser/objectCreationExpression13.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "QualifiedName": {
                                             "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression14.php.tree b/tests/cases/parser/objectCreationExpression14.php.tree
index 17312b59..383e96de 100644
--- a/tests/cases/parser/objectCreationExpression14.php.tree
+++ b/tests/cases/parser/objectCreationExpression14.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "QualifiedName": {
                                             "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression15.php.tree b/tests/cases/parser/objectCreationExpression15.php.tree
index 02f238c3..e76b933f 100644
--- a/tests/cases/parser/objectCreationExpression15.php.tree
+++ b/tests/cases/parser/objectCreationExpression15.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "ScopedPropertyAccessExpression": {
                                             "scopeResolutionQualifier": {
diff --git a/tests/cases/parser/objectCreationExpression16.php.tree b/tests/cases/parser/objectCreationExpression16.php.tree
index 8ba2b71f..96c97be4 100644
--- a/tests/cases/parser/objectCreationExpression16.php.tree
+++ b/tests/cases/parser/objectCreationExpression16.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "QualifiedName": {
                                             "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression17.php.tree b/tests/cases/parser/objectCreationExpression17.php.tree
index 85666616..44cbfbfa 100644
--- a/tests/cases/parser/objectCreationExpression17.php.tree
+++ b/tests/cases/parser/objectCreationExpression17.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "QualifiedName": {
                                             "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression18.php.tree b/tests/cases/parser/objectCreationExpression18.php.tree
index b9762c02..24a69562 100644
--- a/tests/cases/parser/objectCreationExpression18.php.tree
+++ b/tests/cases/parser/objectCreationExpression18.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "ScopedPropertyAccessExpression": {
                                             "scopeResolutionQualifier": {
diff --git a/tests/cases/parser/objectCreationExpression19.php.tree b/tests/cases/parser/objectCreationExpression19.php.tree
index 479d36fa..8879d481 100644
--- a/tests/cases/parser/objectCreationExpression19.php.tree
+++ b/tests/cases/parser/objectCreationExpression19.php.tree
@@ -35,6 +35,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "ParenthesizedExpression": {
                                             "openParen": {
diff --git a/tests/cases/parser/objectCreationExpression2.php.tree b/tests/cases/parser/objectCreationExpression2.php.tree
index 0314c16b..5c05c257 100644
--- a/tests/cases/parser/objectCreationExpression2.php.tree
+++ b/tests/cases/parser/objectCreationExpression2.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "QualifiedName": {
                                     "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression20.php.tree b/tests/cases/parser/objectCreationExpression20.php.tree
index c8a1d73c..3a26db48 100644
--- a/tests/cases/parser/objectCreationExpression20.php.tree
+++ b/tests/cases/parser/objectCreationExpression20.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "ParenthesizedExpression": {
                                     "openParen": {
@@ -31,6 +32,7 @@
                                                 "kind": "NewKeyword",
                                                 "textLength": 3
                                             },
+                                            "attributes": null,
                                             "classTypeDesignator": {
                                                 "ParenthesizedExpression": {
                                                     "openParen": {
@@ -43,6 +45,7 @@
                                                                 "kind": "NewKeyword",
                                                                 "textLength": 3
                                                             },
+                                                            "attributes": null,
                                                             "classTypeDesignator": {
                                                                 "QualifiedName": {
                                                                     "globalSpecifier": null,
diff --git a/tests/cases/parser/objectCreationExpression3.php.tree b/tests/cases/parser/objectCreationExpression3.php.tree
index c7d14b91..ce60efc9 100644
--- a/tests/cases/parser/objectCreationExpression3.php.tree
+++ b/tests/cases/parser/objectCreationExpression3.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "Variable": {
                                     "dollar": null,
diff --git a/tests/cases/parser/objectCreationExpression4.php.tree b/tests/cases/parser/objectCreationExpression4.php.tree
index ddc30c14..4e52ea49 100644
--- a/tests/cases/parser/objectCreationExpression4.php.tree
+++ b/tests/cases/parser/objectCreationExpression4.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "ParenthesizedExpression": {
                                     "openParen": {
diff --git a/tests/cases/parser/objectCreationExpression5.php.tree b/tests/cases/parser/objectCreationExpression5.php.tree
index 83300827..f7b20102 100644
--- a/tests/cases/parser/objectCreationExpression5.php.tree
+++ b/tests/cases/parser/objectCreationExpression5.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "Variable": {
                                     "dollar": {
diff --git a/tests/cases/parser/objectCreationExpression6.php.tree b/tests/cases/parser/objectCreationExpression6.php.tree
index 7b9f0cd4..56fbbec5 100644
--- a/tests/cases/parser/objectCreationExpression6.php.tree
+++ b/tests/cases/parser/objectCreationExpression6.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "Variable": {
                                     "dollar": {
diff --git a/tests/cases/parser/objectCreationExpression7.php.tree b/tests/cases/parser/objectCreationExpression7.php.tree
index 64bd69e7..fe293459 100644
--- a/tests/cases/parser/objectCreationExpression7.php.tree
+++ b/tests/cases/parser/objectCreationExpression7.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "kind": "ClassKeyword",
                                 "textLength": 5
diff --git a/tests/cases/parser/objectCreationExpression8.php.tree b/tests/cases/parser/objectCreationExpression8.php.tree
index 9985edc3..139fff8c 100644
--- a/tests/cases/parser/objectCreationExpression8.php.tree
+++ b/tests/cases/parser/objectCreationExpression8.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "kind": "ClassKeyword",
                                 "textLength": 5
diff --git a/tests/cases/parser/objectCreationExpression9.php.tree b/tests/cases/parser/objectCreationExpression9.php.tree
index 4202d39a..6d4efb26 100644
--- a/tests/cases/parser/objectCreationExpression9.php.tree
+++ b/tests/cases/parser/objectCreationExpression9.php.tree
@@ -19,6 +19,7 @@
                                 "kind": "NewKeyword",
                                 "textLength": 3
                             },
+                            "attributes": null,
                             "classTypeDesignator": {
                                 "kind": "ClassKeyword",
                                 "textLength": 5
diff --git a/tests/cases/parser/throwStatement6.php.tree b/tests/cases/parser/throwStatement6.php.tree
index 91834210..4bc9ddcc 100644
--- a/tests/cases/parser/throwStatement6.php.tree
+++ b/tests/cases/parser/throwStatement6.php.tree
@@ -25,6 +25,7 @@
                                         "kind": "NewKeyword",
                                         "textLength": 3
                                     },
+                                    "attributes": null,
                                     "classTypeDesignator": {
                                         "QualifiedName": {
                                             "globalSpecifier": null,
diff --git a/tests/cases/parser/throwStatement7.php.tree b/tests/cases/parser/throwStatement7.php.tree
index b45f4fcc..c7b3109e 100644
--- a/tests/cases/parser/throwStatement7.php.tree
+++ b/tests/cases/parser/throwStatement7.php.tree
@@ -56,6 +56,7 @@
                                                         "kind": "NewKeyword",
                                                         "textLength": 3
                                                     },
+                                                    "attributes": null,
                                                     "classTypeDesignator": {
                                                         "QualifiedName": {
                                                             "globalSpecifier": null,
@@ -144,6 +145,7 @@
                                                         "kind": "NewKeyword",
                                                         "textLength": 3
                                                     },
+                                                    "attributes": null,
                                                     "classTypeDesignator": {
                                                         "QualifiedName": {
                                                             "globalSpecifier": null,
diff --git a/tests/cases/parser/traits1.php.tree b/tests/cases/parser/traits1.php.tree
index 2547d84f..ed44d2e8 100644
--- a/tests/cases/parser/traits1.php.tree
+++ b/tests/cases/parser/traits1.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits10.php.tree b/tests/cases/parser/traits10.php.tree
index 5e3d35fa..d732c154 100644
--- a/tests/cases/parser/traits10.php.tree
+++ b/tests/cases/parser/traits10.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits12.php.tree b/tests/cases/parser/traits12.php.tree
index f1540d68..b65e6221 100644
--- a/tests/cases/parser/traits12.php.tree
+++ b/tests/cases/parser/traits12.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits13.php.tree b/tests/cases/parser/traits13.php.tree
index b0a450bb..193cf44c 100644
--- a/tests/cases/parser/traits13.php.tree
+++ b/tests/cases/parser/traits13.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits14.php.tree b/tests/cases/parser/traits14.php.tree
index 77204b89..2ba899aa 100644
--- a/tests/cases/parser/traits14.php.tree
+++ b/tests/cases/parser/traits14.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits15.php.tree b/tests/cases/parser/traits15.php.tree
index 64d1f220..d16612f9 100644
--- a/tests/cases/parser/traits15.php.tree
+++ b/tests/cases/parser/traits15.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits16.php.tree b/tests/cases/parser/traits16.php.tree
index 87b08fdc..05ca0147 100644
--- a/tests/cases/parser/traits16.php.tree
+++ b/tests/cases/parser/traits16.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits17.php.tree b/tests/cases/parser/traits17.php.tree
index c8d98619..638eea31 100644
--- a/tests/cases/parser/traits17.php.tree
+++ b/tests/cases/parser/traits17.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits19.php.tree b/tests/cases/parser/traits19.php.tree
index 93791ccd..d4514050 100644
--- a/tests/cases/parser/traits19.php.tree
+++ b/tests/cases/parser/traits19.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits2.php.tree b/tests/cases/parser/traits2.php.tree
index f007a39d..0ef680a6 100644
--- a/tests/cases/parser/traits2.php.tree
+++ b/tests/cases/parser/traits2.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits20.php.tree b/tests/cases/parser/traits20.php.tree
index 9d2a8c16..a7877fa2 100644
--- a/tests/cases/parser/traits20.php.tree
+++ b/tests/cases/parser/traits20.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits3.php.tree b/tests/cases/parser/traits3.php.tree
index 5a3b2f22..cddb6f7c 100644
--- a/tests/cases/parser/traits3.php.tree
+++ b/tests/cases/parser/traits3.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits4.php.tree b/tests/cases/parser/traits4.php.tree
index e1cc93d1..8eb4631f 100644
--- a/tests/cases/parser/traits4.php.tree
+++ b/tests/cases/parser/traits4.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits5.php.tree b/tests/cases/parser/traits5.php.tree
index 0473b6df..637ff4d7 100644
--- a/tests/cases/parser/traits5.php.tree
+++ b/tests/cases/parser/traits5.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits6.php.tree b/tests/cases/parser/traits6.php.tree
index 428d6c3b..fe9b274a 100644
--- a/tests/cases/parser/traits6.php.tree
+++ b/tests/cases/parser/traits6.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits7.php.tree b/tests/cases/parser/traits7.php.tree
index 58b458a8..0b3711f6 100644
--- a/tests/cases/parser/traits7.php.tree
+++ b/tests/cases/parser/traits7.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser/traits9.php.tree b/tests/cases/parser/traits9.php.tree
index 5294afc1..f92f6734 100644
--- a/tests/cases/parser/traits9.php.tree
+++ b/tests/cases/parser/traits9.php.tree
@@ -13,6 +13,7 @@
             },
             {
                 "TraitDeclaration": {
+                    "attributes": null,
                     "traitKeyword": {
                         "kind": "TraitKeyword",
                         "textLength": 5
diff --git a/tests/cases/parser74/throwStatement1.php.tree b/tests/cases/parser74/throwStatement1.php.tree
index 0c6710dc..c4cee65b 100644
--- a/tests/cases/parser74/throwStatement1.php.tree
+++ b/tests/cases/parser74/throwStatement1.php.tree
@@ -68,6 +68,7 @@
                                                         "kind": "NewKeyword",
                                                         "textLength": 3
                                                     },
+                                                    "attributes": null,
                                                     "classTypeDesignator": {
                                                         "QualifiedName": {
                                                             "globalSpecifier": null,
diff --git a/tests/cases/parser80/attributes13.php b/tests/cases/parser80/attributes13.php
new file mode 100644
index 00000000..da133e33
--- /dev/null
+++ b/tests/cases/parser80/attributes13.php
@@ -0,0 +1,3 @@
+<?php
+return new #[MyAttr]
+    class extends OtherClass {};
diff --git a/tests/cases/parser80/attributes13.php.diag b/tests/cases/parser80/attributes13.php.diag
new file mode 100644
index 00000000..0637a088
--- /dev/null
+++ b/tests/cases/parser80/attributes13.php.diag
@@ -0,0 +1 @@
+[]
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes13.php.tree b/tests/cases/parser80/attributes13.php.tree
new file mode 100644
index 00000000..70c83335
--- /dev/null
+++ b/tests/cases/parser80/attributes13.php.tree
@@ -0,0 +1,120 @@
+{
+    "SourceFileNode": {
+        "statementList": [
+            {
+                "InlineHtml": {
+                    "scriptSectionEndTag": null,
+                    "text": null,
+                    "scriptSectionStartTag": {
+                        "kind": "ScriptSectionStartTag",
+                        "textLength": 6
+                    }
+                }
+            },
+            {
+                "ReturnStatement": {
+                    "returnKeyword": {
+                        "kind": "ReturnKeyword",
+                        "textLength": 6
+                    },
+                    "expression": {
+                        "ObjectCreationExpression": {
+                            "newKeword": {
+                                "kind": "NewKeyword",
+                                "textLength": 3
+                            },
+                            "attributes": [
+                                {
+                                    "AttributeGroup": {
+                                        "startToken": {
+                                            "kind": "AttributeToken",
+                                            "textLength": 2
+                                        },
+                                        "attributes": {
+                                            "AttributeElementList": {
+                                                "children": [
+                                                    {
+                                                        "Attribute": {
+                                                            "name": {
+                                                                "QualifiedName": {
+                                                                    "globalSpecifier": null,
+                                                                    "relativeSpecifier": null,
+                                                                    "nameParts": [
+                                                                        {
+                                                                            "kind": "Name",
+                                                                            "textLength": 6
+                                                                        }
+                                                                    ]
+                                                                }
+                                                            },
+                                                            "openParen": null,
+                                                            "argumentExpressionList": null,
+                                                            "closeParen": null
+                                                        }
+                                                    }
+                                                ]
+                                            }
+                                        },
+                                        "endToken": {
+                                            "kind": "CloseBracketToken",
+                                            "textLength": 1
+                                        }
+                                    }
+                                }
+                            ],
+                            "classTypeDesignator": {
+                                "kind": "ClassKeyword",
+                                "textLength": 5
+                            },
+                            "openParen": null,
+                            "argumentExpressionList": null,
+                            "closeParen": null,
+                            "classBaseClause": {
+                                "ClassBaseClause": {
+                                    "extendsKeyword": {
+                                        "kind": "ExtendsKeyword",
+                                        "textLength": 7
+                                    },
+                                    "baseClass": {
+                                        "QualifiedName": {
+                                            "globalSpecifier": null,
+                                            "relativeSpecifier": null,
+                                            "nameParts": [
+                                                {
+                                                    "kind": "Name",
+                                                    "textLength": 10
+                                                }
+                                            ]
+                                        }
+                                    }
+                                }
+                            },
+                            "classInterfaceClause": null,
+                            "classMembers": {
+                                "ClassMembersNode": {
+                                    "openBrace": {
+                                        "kind": "OpenBraceToken",
+                                        "textLength": 1
+                                    },
+                                    "classMemberDeclarations": [],
+                                    "closeBrace": {
+                                        "kind": "CloseBraceToken",
+                                        "textLength": 1
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "semicolon": {
+                        "kind": "SemicolonToken",
+                        "textLength": 1
+                    }
+                }
+            }
+        ],
+        "endOfFileToken": {
+            "kind": "EndOfFileToken",
+            "textLength": 0
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes14.php b/tests/cases/parser80/attributes14.php
new file mode 100644
index 00000000..1dc2b16e
--- /dev/null
+++ b/tests/cases/parser80/attributes14.php
@@ -0,0 +1,4 @@
+<?php
+// This is an invalid location for an attribute, but leave it to applications to detect the invalid combination
+new #[MyAttribute]
+    $x() {};
diff --git a/tests/cases/parser80/attributes14.php.diag b/tests/cases/parser80/attributes14.php.diag
new file mode 100644
index 00000000..0637a088
--- /dev/null
+++ b/tests/cases/parser80/attributes14.php.diag
@@ -0,0 +1 @@
+[]
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes14.php.tree b/tests/cases/parser80/attributes14.php.tree
new file mode 100644
index 00000000..c869801e
--- /dev/null
+++ b/tests/cases/parser80/attributes14.php.tree
@@ -0,0 +1,108 @@
+{
+    "SourceFileNode": {
+        "statementList": [
+            {
+                "InlineHtml": {
+                    "scriptSectionEndTag": null,
+                    "text": null,
+                    "scriptSectionStartTag": {
+                        "kind": "ScriptSectionStartTag",
+                        "textLength": 6
+                    }
+                }
+            },
+            {
+                "ExpressionStatement": {
+                    "expression": {
+                        "ObjectCreationExpression": {
+                            "newKeword": {
+                                "kind": "NewKeyword",
+                                "textLength": 3
+                            },
+                            "attributes": [
+                                {
+                                    "AttributeGroup": {
+                                        "startToken": {
+                                            "kind": "AttributeToken",
+                                            "textLength": 2
+                                        },
+                                        "attributes": {
+                                            "AttributeElementList": {
+                                                "children": [
+                                                    {
+                                                        "Attribute": {
+                                                            "name": {
+                                                                "QualifiedName": {
+                                                                    "globalSpecifier": null,
+                                                                    "relativeSpecifier": null,
+                                                                    "nameParts": [
+                                                                        {
+                                                                            "kind": "Name",
+                                                                            "textLength": 11
+                                                                        }
+                                                                    ]
+                                                                }
+                                                            },
+                                                            "openParen": null,
+                                                            "argumentExpressionList": null,
+                                                            "closeParen": null
+                                                        }
+                                                    }
+                                                ]
+                                            }
+                                        },
+                                        "endToken": {
+                                            "kind": "CloseBracketToken",
+                                            "textLength": 1
+                                        }
+                                    }
+                                }
+                            ],
+                            "classTypeDesignator": {
+                                "Variable": {
+                                    "dollar": null,
+                                    "name": {
+                                        "kind": "VariableName",
+                                        "textLength": 2
+                                    }
+                                }
+                            },
+                            "openParen": {
+                                "kind": "OpenParenToken",
+                                "textLength": 1
+                            },
+                            "argumentExpressionList": null,
+                            "closeParen": {
+                                "kind": "CloseParenToken",
+                                "textLength": 1
+                            },
+                            "classBaseClause": null,
+                            "classInterfaceClause": null,
+                            "classMembers": {
+                                "ClassMembersNode": {
+                                    "openBrace": {
+                                        "kind": "OpenBraceToken",
+                                        "textLength": 1
+                                    },
+                                    "classMemberDeclarations": [],
+                                    "closeBrace": {
+                                        "kind": "CloseBraceToken",
+                                        "textLength": 1
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "semicolon": {
+                        "kind": "SemicolonToken",
+                        "textLength": 1
+                    }
+                }
+            }
+        ],
+        "endOfFileToken": {
+            "kind": "EndOfFileToken",
+            "textLength": 0
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes15.php b/tests/cases/parser80/attributes15.php
new file mode 100644
index 00000000..72da22f5
--- /dev/null
+++ b/tests/cases/parser80/attributes15.php
@@ -0,0 +1,7 @@
+<?php
+#[Attr1]
+#[Attr2(2)]
+trait T1 { }
+
+#[Attr3]
+interface MyInterface { }
diff --git a/tests/cases/parser80/attributes15.php.diag b/tests/cases/parser80/attributes15.php.diag
new file mode 100644
index 00000000..0637a088
--- /dev/null
+++ b/tests/cases/parser80/attributes15.php.diag
@@ -0,0 +1 @@
+[]
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes15.php.tree b/tests/cases/parser80/attributes15.php.tree
new file mode 100644
index 00000000..b5234ffc
--- /dev/null
+++ b/tests/cases/parser80/attributes15.php.tree
@@ -0,0 +1,213 @@
+{
+    "SourceFileNode": {
+        "statementList": [
+            {
+                "InlineHtml": {
+                    "scriptSectionEndTag": null,
+                    "text": null,
+                    "scriptSectionStartTag": {
+                        "kind": "ScriptSectionStartTag",
+                        "textLength": 6
+                    }
+                }
+            },
+            {
+                "TraitDeclaration": {
+                    "attributes": [
+                        {
+                            "AttributeGroup": {
+                                "startToken": {
+                                    "kind": "AttributeToken",
+                                    "textLength": 2
+                                },
+                                "attributes": {
+                                    "AttributeElementList": {
+                                        "children": [
+                                            {
+                                                "Attribute": {
+                                                    "name": {
+                                                        "QualifiedName": {
+                                                            "globalSpecifier": null,
+                                                            "relativeSpecifier": null,
+                                                            "nameParts": [
+                                                                {
+                                                                    "kind": "Name",
+                                                                    "textLength": 5
+                                                                }
+                                                            ]
+                                                        }
+                                                    },
+                                                    "openParen": null,
+                                                    "argumentExpressionList": null,
+                                                    "closeParen": null
+                                                }
+                                            }
+                                        ]
+                                    }
+                                },
+                                "endToken": {
+                                    "kind": "CloseBracketToken",
+                                    "textLength": 1
+                                }
+                            }
+                        },
+                        {
+                            "AttributeGroup": {
+                                "startToken": {
+                                    "kind": "AttributeToken",
+                                    "textLength": 2
+                                },
+                                "attributes": {
+                                    "AttributeElementList": {
+                                        "children": [
+                                            {
+                                                "Attribute": {
+                                                    "name": {
+                                                        "QualifiedName": {
+                                                            "globalSpecifier": null,
+                                                            "relativeSpecifier": null,
+                                                            "nameParts": [
+                                                                {
+                                                                    "kind": "Name",
+                                                                    "textLength": 5
+                                                                }
+                                                            ]
+                                                        }
+                                                    },
+                                                    "openParen": {
+                                                        "kind": "OpenParenToken",
+                                                        "textLength": 1
+                                                    },
+                                                    "argumentExpressionList": {
+                                                        "ArgumentExpressionList": {
+                                                            "children": [
+                                                                {
+                                                                    "ArgumentExpression": {
+                                                                        "name": null,
+                                                                        "colonToken": null,
+                                                                        "byRefToken": null,
+                                                                        "dotDotDotToken": null,
+                                                                        "expression": {
+                                                                            "NumericLiteral": {
+                                                                                "children": {
+                                                                                    "kind": "IntegerLiteralToken",
+                                                                                    "textLength": 1
+                                                                                }
+                                                                            }
+                                                                        }
+                                                                    }
+                                                                }
+                                                            ]
+                                                        }
+                                                    },
+                                                    "closeParen": {
+                                                        "kind": "CloseParenToken",
+                                                        "textLength": 1
+                                                    }
+                                                }
+                                            }
+                                        ]
+                                    }
+                                },
+                                "endToken": {
+                                    "kind": "CloseBracketToken",
+                                    "textLength": 1
+                                }
+                            }
+                        }
+                    ],
+                    "traitKeyword": {
+                        "kind": "TraitKeyword",
+                        "textLength": 5
+                    },
+                    "name": {
+                        "kind": "Name",
+                        "textLength": 2
+                    },
+                    "traitMembers": {
+                        "TraitMembers": {
+                            "openBrace": {
+                                "kind": "OpenBraceToken",
+                                "textLength": 1
+                            },
+                            "traitMemberDeclarations": [],
+                            "closeBrace": {
+                                "kind": "CloseBraceToken",
+                                "textLength": 1
+                            }
+                        }
+                    }
+                }
+            },
+            {
+                "InterfaceDeclaration": {
+                    "attributes": [
+                        {
+                            "AttributeGroup": {
+                                "startToken": {
+                                    "kind": "AttributeToken",
+                                    "textLength": 2
+                                },
+                                "attributes": {
+                                    "AttributeElementList": {
+                                        "children": [
+                                            {
+                                                "Attribute": {
+                                                    "name": {
+                                                        "QualifiedName": {
+                                                            "globalSpecifier": null,
+                                                            "relativeSpecifier": null,
+                                                            "nameParts": [
+                                                                {
+                                                                    "kind": "Name",
+                                                                    "textLength": 5
+                                                                }
+                                                            ]
+                                                        }
+                                                    },
+                                                    "openParen": null,
+                                                    "argumentExpressionList": null,
+                                                    "closeParen": null
+                                                }
+                                            }
+                                        ]
+                                    }
+                                },
+                                "endToken": {
+                                    "kind": "CloseBracketToken",
+                                    "textLength": 1
+                                }
+                            }
+                        }
+                    ],
+                    "interfaceKeyword": {
+                        "kind": "InterfaceKeyword",
+                        "textLength": 9
+                    },
+                    "name": {
+                        "kind": "Name",
+                        "textLength": 11
+                    },
+                    "interfaceBaseClause": null,
+                    "interfaceMembers": {
+                        "InterfaceMembers": {
+                            "openBrace": {
+                                "kind": "OpenBraceToken",
+                                "textLength": 1
+                            },
+                            "interfaceMemberDeclarations": [],
+                            "closeBrace": {
+                                "kind": "CloseBraceToken",
+                                "textLength": 1
+                            }
+                        }
+                    }
+                }
+            }
+        ],
+        "endOfFileToken": {
+            "kind": "EndOfFileToken",
+            "textLength": 0
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes16.php b/tests/cases/parser80/attributes16.php
new file mode 100644
index 00000000..46f7c5d4
--- /dev/null
+++ b/tests/cases/parser80/attributes16.php
@@ -0,0 +1,3 @@
+<?php
+
+trait #[
diff --git a/tests/cases/parser80/attributes16.php.diag b/tests/cases/parser80/attributes16.php.diag
new file mode 100644
index 00000000..6b39fb31
--- /dev/null
+++ b/tests/cases/parser80/attributes16.php.diag
@@ -0,0 +1,26 @@
+[
+    {
+        "kind": 0,
+        "message": "'Name' expected.",
+        "start": 12,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "'{' expected.",
+        "start": 12,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "']' expected.",
+        "start": 15,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "'}' expected.",
+        "start": 15,
+        "length": 0
+    }
+]
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes16.php.tree b/tests/cases/parser80/attributes16.php.tree
new file mode 100644
index 00000000..e1829e6b
--- /dev/null
+++ b/tests/cases/parser80/attributes16.php.tree
@@ -0,0 +1,74 @@
+{
+    "SourceFileNode": {
+        "statementList": [
+            {
+                "InlineHtml": {
+                    "scriptSectionEndTag": null,
+                    "text": null,
+                    "scriptSectionStartTag": {
+                        "kind": "ScriptSectionStartTag",
+                        "textLength": 6
+                    }
+                }
+            },
+            {
+                "TraitDeclaration": {
+                    "attributes": null,
+                    "traitKeyword": {
+                        "kind": "TraitKeyword",
+                        "textLength": 5
+                    },
+                    "name": {
+                        "error": "MissingToken",
+                        "kind": "Name",
+                        "textLength": 0
+                    },
+                    "traitMembers": {
+                        "TraitMembers": {
+                            "openBrace": {
+                                "error": "MissingToken",
+                                "kind": "OpenBraceToken",
+                                "textLength": 0
+                            },
+                            "traitMemberDeclarations": [
+                                {
+                                    "MissingMemberDeclaration": {
+                                        "attributes": [
+                                            {
+                                                "AttributeGroup": {
+                                                    "startToken": {
+                                                        "kind": "AttributeToken",
+                                                        "textLength": 2
+                                                    },
+                                                    "attributes": null,
+                                                    "endToken": {
+                                                        "error": "MissingToken",
+                                                        "kind": "CloseBracketToken",
+                                                        "textLength": 0
+                                                    }
+                                                }
+                                            }
+                                        ],
+                                        "modifiers": [],
+                                        "questionToken": null,
+                                        "typeDeclaration": null,
+                                        "otherTypeDeclarations": null
+                                    }
+                                }
+                            ],
+                            "closeBrace": {
+                                "error": "MissingToken",
+                                "kind": "CloseBraceToken",
+                                "textLength": 0
+                            }
+                        }
+                    }
+                }
+            }
+        ],
+        "endOfFileToken": {
+            "kind": "EndOfFileToken",
+            "textLength": 0
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes17.php b/tests/cases/parser80/attributes17.php
new file mode 100644
index 00000000..98ebc3db
--- /dev/null
+++ b/tests/cases/parser80/attributes17.php
@@ -0,0 +1,2 @@
+<?php
+interface #[
diff --git a/tests/cases/parser80/attributes17.php.diag b/tests/cases/parser80/attributes17.php.diag
new file mode 100644
index 00000000..ccdec7b9
--- /dev/null
+++ b/tests/cases/parser80/attributes17.php.diag
@@ -0,0 +1,26 @@
+[
+    {
+        "kind": 0,
+        "message": "'Name' expected.",
+        "start": 15,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "'{' expected.",
+        "start": 15,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "']' expected.",
+        "start": 18,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "'}' expected.",
+        "start": 18,
+        "length": 0
+    }
+]
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes17.php.tree b/tests/cases/parser80/attributes17.php.tree
new file mode 100644
index 00000000..f2cb28fd
--- /dev/null
+++ b/tests/cases/parser80/attributes17.php.tree
@@ -0,0 +1,75 @@
+{
+    "SourceFileNode": {
+        "statementList": [
+            {
+                "InlineHtml": {
+                    "scriptSectionEndTag": null,
+                    "text": null,
+                    "scriptSectionStartTag": {
+                        "kind": "ScriptSectionStartTag",
+                        "textLength": 6
+                    }
+                }
+            },
+            {
+                "InterfaceDeclaration": {
+                    "attributes": null,
+                    "interfaceKeyword": {
+                        "kind": "InterfaceKeyword",
+                        "textLength": 9
+                    },
+                    "name": {
+                        "error": "MissingToken",
+                        "kind": "Name",
+                        "textLength": 0
+                    },
+                    "interfaceBaseClause": null,
+                    "interfaceMembers": {
+                        "InterfaceMembers": {
+                            "openBrace": {
+                                "error": "MissingToken",
+                                "kind": "OpenBraceToken",
+                                "textLength": 0
+                            },
+                            "interfaceMemberDeclarations": [
+                                {
+                                    "MissingMemberDeclaration": {
+                                        "attributes": [
+                                            {
+                                                "AttributeGroup": {
+                                                    "startToken": {
+                                                        "kind": "AttributeToken",
+                                                        "textLength": 2
+                                                    },
+                                                    "attributes": null,
+                                                    "endToken": {
+                                                        "error": "MissingToken",
+                                                        "kind": "CloseBracketToken",
+                                                        "textLength": 0
+                                                    }
+                                                }
+                                            }
+                                        ],
+                                        "modifiers": [],
+                                        "questionToken": null,
+                                        "typeDeclaration": null,
+                                        "otherTypeDeclarations": null
+                                    }
+                                }
+                            ],
+                            "closeBrace": {
+                                "error": "MissingToken",
+                                "kind": "CloseBraceToken",
+                                "textLength": 0
+                            }
+                        }
+                    }
+                }
+            }
+        ],
+        "endOfFileToken": {
+            "kind": "EndOfFileToken",
+            "textLength": 0
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes18.php b/tests/cases/parser80/attributes18.php
new file mode 100644
index 00000000..374b14b2
--- /dev/null
+++ b/tests/cases/parser80/attributes18.php
@@ -0,0 +1,2 @@
+<?php
+fn #[
diff --git a/tests/cases/parser80/attributes18.php.diag b/tests/cases/parser80/attributes18.php.diag
new file mode 100644
index 00000000..694f42ea
--- /dev/null
+++ b/tests/cases/parser80/attributes18.php.diag
@@ -0,0 +1,44 @@
+[
+    {
+        "kind": 0,
+        "message": "'(' expected.",
+        "start": 8,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "']' expected.",
+        "start": 11,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "'VariableName' expected.",
+        "start": 11,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "')' expected.",
+        "start": 11,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "'=>' expected.",
+        "start": 11,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "'Expression' expected.",
+        "start": 11,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "';' expected.",
+        "start": 11,
+        "length": 0
+    }
+]
\ No newline at end of file
diff --git a/tests/cases/parser80/attributes18.php.tree b/tests/cases/parser80/attributes18.php.tree
new file mode 100644
index 00000000..d7a8baa2
--- /dev/null
+++ b/tests/cases/parser80/attributes18.php.tree
@@ -0,0 +1,104 @@
+{
+    "SourceFileNode": {
+        "statementList": [
+            {
+                "InlineHtml": {
+                    "scriptSectionEndTag": null,
+                    "text": null,
+                    "scriptSectionStartTag": {
+                        "kind": "ScriptSectionStartTag",
+                        "textLength": 6
+                    }
+                }
+            },
+            {
+                "ExpressionStatement": {
+                    "expression": {
+                        "ArrowFunctionCreationExpression": {
+                            "attributes": null,
+                            "staticModifier": null,
+                            "functionKeyword": {
+                                "kind": "FnKeyword",
+                                "textLength": 2
+                            },
+                            "byRefToken": null,
+                            "name": null,
+                            "openParen": {
+                                "error": "MissingToken",
+                                "kind": "OpenParenToken",
+                                "textLength": 0
+                            },
+                            "parameters": {
+                                "ParameterDeclarationList": {
+                                    "children": [
+                                        {
+                                            "Parameter": {
+                                                "attributes": [
+                                                    {
+                                                        "AttributeGroup": {
+                                                            "startToken": {
+                                                                "kind": "AttributeToken",
+                                                                "textLength": 2
+                                                            },
+                                                            "attributes": null,
+                                                            "endToken": {
+                                                                "error": "MissingToken",
+                                                                "kind": "CloseBracketToken",
+                                                                "textLength": 0
+                                                            }
+                                                        }
+                                                    }
+                                                ],
+                                                "visibilityToken": null,
+                                                "questionToken": null,
+                                                "typeDeclaration": null,
+                                                "otherTypeDeclarations": null,
+                                                "byRefToken": null,
+                                                "dotDotDotToken": null,
+                                                "variableName": {
+                                                    "error": "MissingToken",
+                                                    "kind": "VariableName",
+                                                    "textLength": 0
+                                                },
+                                                "equalsToken": null,
+                                                "default": null
+                                            }
+                                        }
+                                    ]
+                                }
+                            },
+                            "closeParen": {
+                                "error": "MissingToken",
+                                "kind": "CloseParenToken",
+                                "textLength": 0
+                            },
+                            "colonToken": null,
+                            "questionToken": null,
+                            "returnType": null,
+                            "otherReturnTypes": null,
+                            "arrowToken": {
+                                "error": "MissingToken",
+                                "kind": "DoubleArrowToken",
+                                "textLength": 0
+                            },
+                            "resultExpression": {
+                                "error": "MissingToken",
+                                "kind": "Expression",
+                                "textLength": 0
+                            }
+                        }
+                    },
+                    "semicolon": {
+                        "error": "MissingToken",
+                        "kind": "SemicolonToken",
+                        "textLength": 0
+                    }
+                }
+            }
+        ],
+        "endOfFileToken": {
+            "kind": "EndOfFileToken",
+            "textLength": 0
+        }
+    }
+}
\ No newline at end of file