diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index cd77c8b8..5dc70b9d 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -143,8 +143,8 @@ class CompilerBase extends \PhpAot\Core\Translator
     protected array $nativeFunctions = [];
     protected array $internalFunctions = [];
     protected array $nativeConstants = [];
-    protected array $functionDeclInFile = [];
-    protected array $functionCallInFile = [];
+    protected array $symbolDeclInFile = [];
+    protected array $symbolCallInFile = [];
     protected array $redoAfterDeclare = [];
     protected array $constData = [];
     protected int $optimizeLevel = 0;
@@ -1600,8 +1600,8 @@ class CompilerBase extends \PhpAot\Core\Translator
     {
         // 在预处理阶段检测到函数声明，但是未定义，说明在当前文件，但是顺序错误
         // 跳过，稍后再处理
-        if (isset($this->functionDeclInFile[$name])
-            and $this->functionDeclInFile[$name] === $this->file
+        if (isset($this->symbolDeclInFile[$name])
+            and $this->symbolDeclInFile[$name] === $this->file
             and !$this->hasNativeFunction($name)) {
             $this->redoAfterDeclare[$name] = true;
             throw new Skip();
diff --git a/src/Php/FileSorter.php b/src/Php/FileSorter.php
index 5bc4dfc9..829e577f 100644
--- a/src/Php/FileSorter.php
+++ b/src/Php/FileSorter.php
@@ -10,13 +10,13 @@ namespace PhpAot\Php;
 
 class FileSorter
 {
-    private array $functionDeclInFile;
-    private array $functionCallInFile;
+    private array $symbolDeclInFile;
+    private array $symbolCallInFile;
 
-    public function __construct(array $functionDeclInFile, array $functionCallInFile)
+    public function __construct(array $symbolDeclInFile, array $symbolCallInFile)
     {
-        $this->functionDeclInFile = $functionDeclInFile;
-        $this->functionCallInFile = $functionCallInFile;
+        $this->symbolDeclInFile = $symbolDeclInFile;
+        $this->symbolCallInFile = $symbolCallInFile;
     }
 
     public function sort(): array
@@ -65,12 +65,12 @@ class FileSorter
     {
         $dependencies = [];
 
-        foreach ($this->functionCallInFile as $call) {
+        foreach ($this->symbolCallInFile as $call) {
             $callerFile   = $call['file'];
             $functionName = $call['name'];
 
-            if (isset($this->functionDeclInFile[$functionName])) {
-                $declFile = $this->functionDeclInFile[$functionName];
+            if (isset($this->symbolDeclInFile[$functionName])) {
+                $declFile = $this->symbolDeclInFile[$functionName];
 
                 if ($callerFile !== $declFile) {
                     if (!isset($dependencies[$callerFile])) {
@@ -89,9 +89,9 @@ class FileSorter
 
     private function getAllFiles(): array
     {
-        $files = array_values($this->functionDeclInFile);
+        $files = array_values($this->symbolDeclInFile);
 
-        foreach ($this->functionCallInFile as $call) {
+        foreach ($this->symbolCallInFile as $call) {
             $files[] = $call['file'];
         }
 
diff --git a/src/Php/Preprocessor.php b/src/Php/Preprocessor.php
index d23ac47b..6f0cdd37 100644
--- a/src/Php/Preprocessor.php
+++ b/src/Php/Preprocessor.php
@@ -20,12 +20,12 @@ class Preprocessor extends CompilerBase
 
     public function sortFiles(array &$list): void
     {
-        foreach ($this->functionCallInFile as $k => $call) {
-            if (!isset($this->functionDeclInFile[$call['name']])) {
-                unset($this->functionCallInFile[$k]);
+        foreach ($this->symbolCallInFile as $k => $call) {
+            if (!isset($this->symbolDeclInFile[$call['name']])) {
+                unset($this->symbolCallInFile[$k]);
             }
         }
-        $sorter      = new FileSorter($this->functionDeclInFile, $this->functionCallInFile);
+        $sorter = new FileSorter($this->symbolDeclInFile, $this->symbolCallInFile);
         $sortedFiles = $sorter->sort();
 
         foreach ($list as $file) {
@@ -120,8 +120,8 @@ class Preprocessor extends CompilerBase
 
         foreach ($functionCalls as $call) {
             if ($call->name instanceof Node\Name) {
-                $name                       = $call->name->toString();
-                $this->functionCallInFile[] = [
+                $name = $call->name->toString();
+                $this->symbolCallInFile[] = [
                     'name' => $name,
                     'file' => $this->file,
                     'line' => $call->getLine(),
@@ -164,7 +164,7 @@ class Preprocessor extends CompilerBase
         if ($this->stubFile) {
             $this->nativeFunctions[$name] = $this->parseFunctionDecl($v);
         } else {
-            $this->functionDeclInFile[$name] = $this->file;
+            $this->symbolDeclInFile[$name] = $this->file;
         }
     }
 
@@ -180,11 +180,18 @@ class Preprocessor extends CompilerBase
     protected function prepareClass(Node\Stmt\Class_|Node\Stmt\Trait_|Node\Stmt\Enum_ $class): string
     {
         $this->class = $this->parseIdentifier($class->name);
+        $fullClassName = $this->getNamespacedClassName($this->class);
         if (!empty($class->extends)) {
             $this->parentClass = $this->getParentClass($class->extends);
-            $fullClassName = $this->getNamespacedClassName($this->class);
+            $this->symbolCallInFile[] = [
+                'name' => $this->parentClass,
+                'file' => $this->file,
+                'line' => $class->getLine(),
+            ];
             $this->classExtends[$fullClassName] = $this->parentClass;
         }
+        $this->symbolDeclInFile[$fullClassName] = $this->file;
+
         $code        = '';
         foreach ($class->stmts as $v) {
             $type = $v->getType();
diff --git a/src/Php/Translator.php b/src/Php/Translator.php
index 4ce4a7f5..8eeda76b 100644
--- a/src/Php/Translator.php
+++ b/src/Php/Translator.php
@@ -419,6 +419,9 @@ class Translator extends Preprocessor
     {
         $code = '#include <phpx.h>' . PHP_EOL;
 
+        $literalStringsCount = count($this->literalStrings);
+        $code .= 'extern ' . self::TYPE_STR . ' ' . self::LITERAL_STRINGS . '[' . $literalStringsCount . '];' . PHP_EOL;
+
         foreach ($this->nativeFunctions as $name => $func) {
             $code .= 'extern ' . $func->returnType . ' ' . self::PREFIX . $name . '(';
             $list = [];