From e8a33a8ec61325eb65297c265c2c94c8fc229457 Mon Sep 17 00:00:00 2001
From: phpstan-bot <79867460+phpstan-bot@users.noreply.github.com>
Date: Mon, 16 Feb 2026 23:40:51 +0000
Subject: [PATCH 1/2] Fix static method call on non-generic class-string
 returning ErrorType

- When calling a static method on a non-generic class-string (e.g. $class::foo()
  where $class is class-string), the result was ErrorType instead of MixedType
- Root cause: class-string converts to ObjectWithoutClassType via
  getObjectTypeOrClassStringObjectType(), which returns maybe for hasMethod(),
  causing filterTypeWithMethod() to reject it and methodCallReturnType() to
  return null, falling back to ErrorType
- Fix checks if the static call is on an expression (not a class name), the
  resolved type has no known class names, and hasMethod is not definitively no,
  returning MixedType in that case
- New regression test in tests/PHPStan/Analyser/nsrt/bug-9844.php

Closes https://github.com/phpstan/phpstan/issues/9844
---
 src/Analyser/MutatingScope.php           | 10 +++++++++-
 tests/PHPStan/Analyser/nsrt/bug-9844.php | 17 +++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 tests/PHPStan/Analyser/nsrt/bug-9844.php

diff --git a/src/Analyser/MutatingScope.php b/src/Analyser/MutatingScope.php
index db31ce7669..fd1bf9257f 100644
--- a/src/Analyser/MutatingScope.php
+++ b/src/Analyser/MutatingScope.php
@@ -6390,7 +6390,15 @@ private function getStaticCallType(Expr\StaticCall $node): ?Type
 				$node,
 			);
 			if ($callType === null) {
-				$callType = new ErrorType();
+				if (
+					!$node->class instanceof Name
+					&& count($staticMethodCalledOnType->getObjectClassNames()) === 0
+					&& !$staticMethodCalledOnType->hasMethod($node->name->toString())->no()
+				) {
+					$callType = new MixedType();
+				} else {
+					$callType = new ErrorType();
+				}
 			}
 
 			if ($node->class instanceof Expr) {
diff --git a/tests/PHPStan/Analyser/nsrt/bug-9844.php b/tests/PHPStan/Analyser/nsrt/bug-9844.php
new file mode 100644
index 0000000000..a6ec9c098d
--- /dev/null
+++ b/tests/PHPStan/Analyser/nsrt/bug-9844.php
@@ -0,0 +1,17 @@
+<?php declare(strict_types = 1);
+
+namespace Bug9844;
+
+use function PHPStan\Testing\assertType;
+
+class HelloWorld
+{
+
+	/**
+	 * @param class-string $class
+	 */
+	public function sayHello(string $class): void
+	{
+		assertType('mixed', $class::foo());
+	}
+}

From b939e75028dcfa0755014c69864164c62bcc4efb Mon Sep 17 00:00:00 2001
From: phpstan-bot <ondrej+phpstanbot@mirtes.cz>
Date: Tue, 17 Feb 2026 00:14:59 +0000
Subject: [PATCH 2/2] Fix CI failures [claude-ci-fix]

Automated fix attempt 1 for CI failures.
---
 src/Analyser/MutatingScope.php | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/Analyser/MutatingScope.php b/src/Analyser/MutatingScope.php
index fd1bf9257f..b5e7ee2c71 100644
--- a/src/Analyser/MutatingScope.php
+++ b/src/Analyser/MutatingScope.php
@@ -6390,14 +6390,13 @@ private function getStaticCallType(Expr\StaticCall $node): ?Type
 				$node,
 			);
 			if ($callType === null) {
+				$callType = new ErrorType();
 				if (
 					!$node->class instanceof Name
 					&& count($staticMethodCalledOnType->getObjectClassNames()) === 0
-					&& !$staticMethodCalledOnType->hasMethod($node->name->toString())->no()
+					&& $staticMethodCalledOnType->hasMethod($node->name->toString()) !== TrinaryLogic::createNo()
 				) {
 					$callType = new MixedType();
-				} else {
-					$callType = new ErrorType();
 				}
 			}