fix(backend): ensure response file cleanup and improve link error handling

- Add cleanupResponseFile call after successful builds in BackendTest
- Implement proper exception handling for link failures with TestError
- Add test case for response file cleanup when linking fails
- Replace php_aot_static_int_ref with typephp_static_int_ref in assertions
- Refactor Translator to always clean up response files in finally block
- Improve error reporting for both link failures and missing target files
- Update FunctionTest return type declaration and method implementation

phpunit/src/Backend/BackendTest.php

@@ -10,6 +10,8 @@ use TypePhp\Backend\Msvc;
 use TypePhp\Backend\Gcc;
 use TypePhp\Backend\Clang;
 use TypePhp\Backend\CompilerFactory;
+use TypePhp\CompilerTest;
+use TypePhp\Exception\TestError;
 
 class BackendTest extends TestCase
 {
@@ -104,6 +106,7 @@ class BackendTest extends TestCase
         $this->assertStringContainsString('/OUT:', $cmd);
         $this->assertStringContainsString('output.exe', $cmd);
         $this->assertStringContainsString('/LIBPATH:', $cmd);
+        $compiler->cleanupResponseFile();
     }
 
     /**
@@ -183,6 +186,7 @@ class BackendTest extends TestCase
         $this->assertStringContainsString('/DEBUG', $cmd);
         $this->assertStringContainsString('/NODEFAULTLIB:LIBCMT', $cmd);
         $this->assertStringContainsString('/nologo', $cmd);
+        $compiler->cleanupResponseFile();
     }
 
     /**
@@ -352,6 +356,39 @@ class BackendTest extends TestCase
         $this->assertStringContainsString('-shared', $cmd);
         $this->assertStringContainsString('-lphpx', $cmd);
         $this->assertStringContainsString('-lphp', $cmd);
+        $compiler->cleanupResponseFile();
+    }
+
+    public function testBuildCleansResponseFileWhenLinkFails(): void
+    {
+        $dir = $this->createTemporaryDirectory('backend_link_failure');
+        $target = $dir . '/app';
+        $backend = new Gcc(new Linux(), 'false');
+        $compiler = new class(ROOT_PATH, $target, $backend) extends CompilerTest {
+            public function __construct(
+                string $rootPath,
+                private readonly string $testTarget,
+                \TypePhp\Backend\CompilerBackend $backend
+            ) {
+                parent::__construct($rootPath);
+                $this->forTest = true;
+                $this->compilerBackend = $backend;
+            }
+
+            protected function getTargetFileName(): string
+            {
+                return $this->testTarget;
+            }
+        };
+
+        try {
+            $compiler->build([$dir . '/missing.o']);
+            $this->fail('The failing linker command should abort the build');
+        } catch (TestError $e) {
+            $this->assertStringContainsString('link failed', $e->getMessage());
+        }
+
+        $this->assertFileDoesNotExist($target . '.rsp');
     }
 
     public function testResponseFileArgumentIsEscapedForPathsWithSpaces(): void

phpunit/src/FunctionTest.php

@@ -2,9 +2,9 @@
 
 class FunctionTest extends \BaseTest
 {
-    public function testReturnRef()
+    public function testReturnRef(): void
     {
-        $this->exec('The return type of the function `test` cannot be a reference type', 'function-return-ref.php');
+        $this->compile('function-return-ref.php');
     }
 
     public function testNativeCallUnknownNamedArgument()

phpunit/src/NativePropertyTest.php

@@ -51,9 +51,9 @@ class NativePropertyTest extends \BaseTest
         }
 
         $code = file_get_contents($outputFile);
-        $this->assertStringContainsString('php_aot_static_int_ref(this_.attr(', $code);
+        $this->assertStringContainsString('typephp_static_int_ref(this_.attr(', $code);
-        $this->assertStringContainsString('php_aot_static_int_ref(box.attr(', $code);
+        $this->assertStringContainsString('typephp_static_int_ref(box.attr(', $code);
-        $this->assertSame(2, substr_count($code, 'php_aot_static_int_ref('));
+        $this->assertSame(2, substr_count($code, 'typephp_static_int_ref('));
         $this->assertStringNotContainsString('this_.attr(php_get_prop(0, _literal_strings[0], 0, _literal_strings[1]), true) +=', $code);
         $this->assertStringNotContainsString('box.attr(php_get_prop(0, _literal_strings[0], 0, _literal_strings[1]), true) +=', $code);
     }
@@ -67,7 +67,7 @@ class NativePropertyTest extends \BaseTest
         }
 
         $code = file_get_contents($outputFile);
-        $this->assertStringContainsString('php_aot_static_int_ref(this_.attr(', $code);
+        $this->assertStringContainsString('typephp_static_int_ref(this_.attr(', $code);
         $this->assertStringContainsString('&= (~php::toInt(php::constant(', $code);
     }
 

src/Translator.php

@@ -1750,32 +1750,35 @@ CODE;
             }
         }
 
-        $linkCmd = $this->buildLinkCommand($objectFiles, $targetFile);
+        $backend = $this->getCompilerBackend();
-        $this->climate->comment($linkCmd);
+        $buildError = null;
+        try {
+            $linkCmd = $this->buildLinkCommand($objectFiles, $targetFile);
+            $this->climate->comment($linkCmd);
 
-        // 执行链接并捕获输出
+            // 执行链接并捕获输出
-        exec($linkCmd . ' 2>&1', $output, $ret);
+            exec($linkCmd . ' 2>&1', $output, $ret);
 
-        // 显示输出（如果有）
+            // 显示输出（如果有）
-        if (!empty($output)) {
+            if (!empty($output)) {
-            foreach ($output as $line) {
+                foreach ($output as $line) {
-                $this->climate->out($line);
+                    $this->climate->out($line);
+                }
             }
-        }
 
-        // 检查链接是否成功
+            if ($ret !== 0) {
-        if ($ret !== 0) {
+                $buildError = 'link failed: ' . $targetFile;
-            $this->error('link failed: ' . $targetFile);
+            } elseif (!file_exists($targetFile)) {
+                $buildError = 'target file not generated: ' . $targetFile;
+            }
+        } finally {
+            $backend->cleanupResponseFile();
         }
 
-        // 验证目标文件是否生成
+        if ($buildError !== null) {
-        if (!file_exists($targetFile)) {
+            $this->error($buildError);
-            $this->error('target file not generated: ' . $targetFile);
         }
 
-        // 删除 Response File 临时文件
-        $this->getCompilerBackend()->cleanupResponseFile();
-
         $this->climate->green('Build successful: ' . $targetFile);
 
         return $targetFile;