[11.x] Fix PHP_MAXPATHLEN check for existing check of files for views

src/Illuminate/View/Component.php

@@ -170,7 +170,7 @@ protected function extractBladeViewFromString($contents)
             return static::$bladeViewCache[$key];
         }
 
-        if (strlen($contents) <= PHP_MAXPATHLEN && $this->factory()->exists($contents)) {
+        if ($this->factory()->exists($contents)) {
             return static::$bladeViewCache[$key] = $contents;
         }
 

src/Illuminate/View/FileViewFinder.php

@@ -128,7 +128,9 @@ protected function findInPaths($name, $paths)
     {
         foreach ((array) $paths as $path) {
             foreach ($this->getPossibleViewFiles($name) as $file) {
-                if ($this->files->exists($viewPath = $path.'/'.$file)) {
+                $viewPath = $path.'/'.$file;
+
+                if (strlen($viewPath) <= PHP_MAXPATHLEN && $this->files->exists($viewPath)) {
                     return $viewPath;
                 }
             }

tests/Integration/View/BladeTest.php

@@ -7,6 +7,7 @@
 use Illuminate\Support\Facades\View;
 use Illuminate\View\Component;
 use Orchestra\Testbench\TestCase;
+use PHPUnit\Framework\Attributes\RunInSeparateProcess;
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\Finder\SplFileInfo;
 
@@ -26,6 +27,29 @@ public function test_rendering_blade_long_maxpathlen_string()
         $this->assertSame($longString.'a', $result);
     }
 
+    #[RunInSeparateProcess]
+    public function test_rendering_blade_long_maxpathlen_string_with_exact_length()
+    {
+        // The PHP_MAXPATHLEN restriction is only active, if
+        // open_basedir is set and active. Otherwise, the check
+        // for the PHP_MAXPATHLEN is not active.
+        if (ini_get('open_basedir') === '') {
+            $openBaseDir = windows_os() ? explode('\\', __DIR__)[0].'\\'.';'.sys_get_temp_dir() : '/';
+            $iniSet = ini_set(
+                'open_basedir',
+                $openBaseDir
+            );
+
+            $this->assertNotFalse($iniSet, 'Could not set config for open_basedir.');
+        }
+
+        $longString = str_repeat('x', PHP_MAXPATHLEN);
+
+        $result = Blade::render($longString);
+
+        $this->assertSame($longString, $result);
+    }
+
     public function test_rendering_blade_component_instance()
     {
         $component = new HelloComponent('Taylor');