diff --git a/TinySTL/Allocator.h b/TinySTL/Allocator.h
index 0e70378..42caa8a 100644
--- a/TinySTL/Allocator.h
+++ b/TinySTL/Allocator.h
@@ -4,6 +4,7 @@
 #include "Alloc.h"
 #include "Construct.h"
 
+#include <cassert>
 #include <new>
 
 namespace TinySTL{
@@ -38,6 +39,7 @@ namespace TinySTL{
 	}
 	template<class T>
 	T *allocator<T>::allocate(size_t n){
+		assert(n != 0);
 		return static_cast<T *>(alloc::allocate(sizeof(T) * n));
 	}
 	template<class T>
@@ -46,6 +48,7 @@ namespace TinySTL{
 	}
 	template<class T>
 	void allocator<T>::deallocate(T *ptr, size_t n){
+		assert(n != 0);
 		alloc::deallocate(static_cast<void *>(ptr), sizeof(T)* n);
 	}
 
diff --git a/TinySTL/TinySTL.vcxproj b/TinySTL/TinySTL.vcxproj
index 0be76d6..39e827c 100644
--- a/TinySTL/TinySTL.vcxproj
+++ b/TinySTL/TinySTL.vcxproj
@@ -83,6 +83,7 @@
     <ClInclude Include="Allocator.h" />
     <ClInclude Include="Construct.h" />
     <ClInclude Include="TypeTraits.h" />
+    <ClInclude Include="UninitializedFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/TinySTL/TinySTL.vcxproj.filters b/TinySTL/TinySTL.vcxproj.filters
index ee4eeb0..657d1f1 100644
--- a/TinySTL/TinySTL.vcxproj.filters
+++ b/TinySTL/TinySTL.vcxproj.filters
@@ -32,5 +32,8 @@
     <ClInclude Include="Allocator.h">
       <Filter>头文件</Filter>
     </ClInclude>
+    <ClInclude Include="UninitializedFunctions.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file