rebase

Author: staabm

src/Analyser/MutatingScope.php

@@ -369,14 +369,21 @@ public function rememberConstructorScope(): self
 		);
 	}
 
-	private function isReadonlyPropertyFetchOnThis(PropertyFetch $expr): bool
+	private function isReadonlyPropertyFetch(PropertyFetch $expr, bool $allowOnlyOnThis): bool
 	{
+		if (!$this->phpVersion->supportsReadOnlyProperties()) {
+			return false;
+		}
+
 		while ($expr instanceof PropertyFetch) {
 			if ($expr->var instanceof Variable) {
 				if (
-					! $expr->name instanceof Node\Identifier
-					|| !is_string($expr->var->name)
-					|| $expr->var->name !== 'this'
+					$allowOnlyOnThis
+					&& (
+						! $expr->name instanceof Node\Identifier
+						|| !is_string($expr->var->name)
+						|| $expr->var->name !== 'this'
+					)
 				) {
 					return false;
 				}
@@ -3774,7 +3781,7 @@ private function enterAnonymousFunctionWithoutReflection(
 						continue;
 					}
 
-					if (!$this->isReadonlyPropertyFetchOnThis($expr)) {
+					if (!$this->isReadonlyPropertyFetch($expr, true)) {
 						continue;
 					}