Process attribute arguments recursively

src/Analyser/NodeScopeResolver.php

@@ -408,7 +408,7 @@ private function processStmtNode(
 			foreach ($stmt->attrGroups as $attrGroup) {
 				foreach ($attrGroup->attrs as $attr) {
 					foreach ($attr->args as $arg) {
-						$nodeCallback($arg->value, $scope);
+						$this->processExprNode($arg->value, $scope, $nodeCallback, ExpressionContext::createDeep());
 					}
 				}
 			}
@@ -469,7 +469,7 @@ private function processStmtNode(
 			foreach ($stmt->attrGroups as $attrGroup) {
 				foreach ($attrGroup->attrs as $attr) {
 					foreach ($attr->args as $arg) {
-						$nodeCallback($arg->value, $scope);
+						$this->processExprNode($arg->value, $scope, $nodeCallback, ExpressionContext::createDeep());
 					}
 				}
 			}
@@ -644,7 +644,7 @@ private function processStmtNode(
 			foreach ($stmt->attrGroups as $attrGroup) {
 				foreach ($attrGroup->attrs as $attr) {
 					foreach ($attr->args as $arg) {
-						$nodeCallback($arg->value, $classScope);
+						$this->processExprNode($arg->value, $classScope, $nodeCallback, ExpressionContext::createDeep());
 					}
 				}
 			}
@@ -660,7 +660,7 @@ private function processStmtNode(
 			foreach ($stmt->attrGroups as $attrGroup) {
 				foreach ($attrGroup->attrs as $attr) {
 					foreach ($attr->args as $arg) {
-						$nodeCallback($arg->value, $scope);
+						$this->processExprNode($arg->value, $scope, $nodeCallback, ExpressionContext::createDeep());
 					}
 				}
 			}
@@ -1378,7 +1378,7 @@ private function processStmtNode(
 				foreach ($stmt->attrGroups as $attrGroup) {
 					foreach ($attrGroup->attrs as $attr) {
 						foreach ($attr->args as $arg) {
-							$nodeCallback($arg->value, $scope);
+							$this->processExprNode($arg->value, $scope, $nodeCallback, ExpressionContext::createDeep());
 						}
 					}
 				}
@@ -3068,7 +3068,7 @@ private function processParamNode(
 		foreach ($param->attrGroups as $attrGroup) {
 			foreach ($attrGroup->attrs as $attr) {
 				foreach ($attr->args as $arg) {
-					$nodeCallback($arg->value, $scope);
+					$this->processExprNode($arg->value, $scope, $nodeCallback, ExpressionContext::createDeep());
 				}
 			}
 		}

tests/PHPStan/Rules/DeadCode/UnusedPrivateConstantRuleTest.php

@@ -46,4 +46,13 @@ public function testRule(): void
 		]);
 	}
 
+	public function testBug5651(): void
+	{
+		if (PHP_VERSION_ID < 80000 && !self::$useStaticReflectionProvider) {
+			$this->markTestSkipped('Test requires PHP 8.0.');
+		}
+
+		$this->analyse([__DIR__ . '/data/bug-5651.php'], []);
+	}
+
 }

tests/PHPStan/Rules/DeadCode/data/bug-5651.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Bug5651;
+
+#[\Attribute]
+class MyAttribute
+{
+
+	/** @var string[] */
+	public $values;
+
+	/**
+	 * @param string[] $values
+	 */
+	public function __construct(array $values)
+	{
+		$this->values = $values;
+	}
+}
+
+class HelloWorld
+{
+	private const BAR = 'bar';
+
+	#[MyAttribute(['foo' => self::BAR])]
+	public function sayHello(): void
+	{
+
+	}
+}