diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 67741bd4..4bb38443 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -151,7 +151,7 @@ jobs:
   publish-nightlies-github:
     runs-on: ubuntu-latest
     if: false
-    needs: [ windows-x64, linux-x64, macos-arm64, sign-nuget-preview, sign-nuget-release ]
+    needs: [ sign-nuget ]
     steps:
     - uses: actions/download-artifact@v4
       with:
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/CXXMethodDeclarationTest.cs
index afc4704c..5a363544 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/CXXMethodDeclarationTest.cs
@@ -905,7 +905,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -929,7 +929,7 @@ public unsafe partial struct MyStruct
         public delegate void _MyVoidMethod(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public delegate sbyte _MyInt8Method(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
@@ -946,7 +946,7 @@ public void MyVoidMethod()
             }}
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             fixed (MyStruct* pThis = &this)
@@ -983,7 +983,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1007,7 +1007,7 @@ public unsafe partial struct MyStruct
         public delegate void _MyVoidMethod(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public delegate sbyte _MyInt8Method(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
@@ -1026,7 +1026,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             fixed (MyStruct* pThis = &this)
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/CXXMethodDeclarationTest.cs
index 14249777..88bd0b5e 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/CXXMethodDeclarationTest.cs
@@ -900,7 +900,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -924,7 +924,7 @@ public unsafe partial struct MyStruct
         public delegate void _MyVoidMethod(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public delegate sbyte _MyInt8Method(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
@@ -941,7 +941,7 @@ public void MyVoidMethod()
             }}
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             fixed (MyStruct* pThis = &this)
@@ -978,7 +978,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1002,7 +1002,7 @@ public unsafe partial struct MyStruct
         public delegate void _MyVoidMethod(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public delegate sbyte _MyInt8Method(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
@@ -1021,7 +1021,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             fixed (MyStruct* pThis = &this)
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultUnix/CXXMethodDeclarationTest.cs
index 47e77d51..9049cd5d 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultUnix/CXXMethodDeclarationTest.cs
@@ -844,7 +844,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -868,7 +868,7 @@ public void MyVoidMethod()
             ((delegate* unmanaged[Thiscall]<MyStruct*, void>)(lpVtbl[0]))((MyStruct*)Unsafe.AsPointer(ref this));
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
@@ -896,7 +896,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -922,7 +922,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultWindows/CXXMethodDeclarationTest.cs
index 01f769a5..a668f2c1 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpDefaultWindows/CXXMethodDeclarationTest.cs
@@ -849,7 +849,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -873,7 +873,7 @@ public void MyVoidMethod()
             ((delegate* unmanaged[Thiscall]<MyStruct*, void>)(lpVtbl[0]))((MyStruct*)Unsafe.AsPointer(ref this));
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
@@ -901,7 +901,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -927,7 +927,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestUnix/CXXMethodDeclarationTest.cs
index 9ac0558a..6d422c23 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestUnix/CXXMethodDeclarationTest.cs
@@ -844,7 +844,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -868,7 +868,7 @@ public void MyVoidMethod()
             ((delegate* unmanaged[Thiscall]<MyStruct*, void>)(lpVtbl[0]))((MyStruct*)Unsafe.AsPointer(ref this));
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
@@ -896,7 +896,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -922,7 +922,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestWindows/CXXMethodDeclarationTest.cs
index e37b13e8..731613c9 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpLatestWindows/CXXMethodDeclarationTest.cs
@@ -844,7 +844,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -868,7 +868,7 @@ public void MyVoidMethod()
             ((delegate* unmanaged[Thiscall]<MyStruct*, void>)(lpVtbl[0]))((MyStruct*)Unsafe.AsPointer(ref this));
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
@@ -896,7 +896,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -922,7 +922,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewUnix/CXXMethodDeclarationTest.cs
index e9f3cb58..d0e056f3 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewUnix/CXXMethodDeclarationTest.cs
@@ -844,7 +844,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -868,7 +868,7 @@ public void MyVoidMethod()
             ((delegate* unmanaged[Thiscall]<MyStruct*, void>)(lpVtbl[0]))((MyStruct*)Unsafe.AsPointer(ref this));
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
@@ -896,7 +896,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -922,7 +922,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewWindows/CXXMethodDeclarationTest.cs
index 28f1de68..a49a18d3 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpPreviewWindows/CXXMethodDeclarationTest.cs
@@ -844,7 +844,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -868,7 +868,7 @@ public void MyVoidMethod()
             ((delegate* unmanaged[Thiscall]<MyStruct*, void>)(lpVtbl[0]))((MyStruct*)Unsafe.AsPointer(ref this));
         }}
 
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
@@ -896,7 +896,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -922,7 +922,7 @@ public void MyVoidMethod()
         }}
 
         [VtblIndex(1)]
-        [return: NativeTypeName(""char"")]
+        [return: NativeTypeName(""signed char"")]
         public sbyte MyInt8Method()
         {{
             return ((delegate* unmanaged[Thiscall]<MyStruct*, sbyte>)(lpVtbl[1]))((MyStruct*)Unsafe.AsPointer(ref this));
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleUnix/CXXMethodDeclarationTest.cs
index 0403f89d..7485d37c 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleUnix/CXXMethodDeclarationTest.cs
@@ -1099,7 +1099,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1124,7 +1124,7 @@ virtual char MyInt8Method()
         </param>
       </delegate>
       <delegate name=""_MyInt8Method"" access=""public"" convention=""ThisCall"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <param name=""pThis"">
           <type>MyStruct*</type>
         </param>
@@ -1151,7 +1151,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>fixed (MyStruct* pThis = &amp;this)
     {{
@@ -1191,7 +1191,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1216,7 +1216,7 @@ virtual char MyInt8Method()
         </param>
       </delegate>
       <delegate name=""_MyInt8Method"" access=""public"" convention=""ThisCall"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <param name=""pThis"">
           <type>MyStruct*</type>
         </param>
@@ -1243,7 +1243,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>fixed (MyStruct* pThis = &amp;this)
     {{
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleWindows/CXXMethodDeclarationTest.cs
index 20c1ee5c..bcdda1f4 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlCompatibleWindows/CXXMethodDeclarationTest.cs
@@ -1100,7 +1100,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1125,7 +1125,7 @@ virtual char MyInt8Method()
         </param>
       </delegate>
       <delegate name=""_MyInt8Method"" access=""public"" convention=""ThisCall"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <param name=""pThis"">
           <type>MyStruct*</type>
         </param>
@@ -1152,7 +1152,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>fixed (MyStruct* pThis = &amp;this)
     {{
@@ -1192,7 +1192,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1217,7 +1217,7 @@ virtual char MyInt8Method()
         </param>
       </delegate>
       <delegate name=""_MyInt8Method"" access=""public"" convention=""ThisCall"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <param name=""pThis"">
           <type>MyStruct*</type>
         </param>
@@ -1244,7 +1244,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>fixed (MyStruct* pThis = &amp;this)
     {{
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultUnix/CXXMethodDeclarationTest.cs
index a27fcb0a..5a4859f9 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultUnix/CXXMethodDeclarationTest.cs
@@ -992,7 +992,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1017,7 +1017,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
@@ -1048,7 +1048,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1073,7 +1073,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultWindows/CXXMethodDeclarationTest.cs
index 68d12ca2..85afa10c 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlDefaultWindows/CXXMethodDeclarationTest.cs
@@ -992,7 +992,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1017,7 +1017,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
@@ -1048,7 +1048,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1073,7 +1073,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestUnix/CXXMethodDeclarationTest.cs
index 6f9e9e76..b843483e 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestUnix/CXXMethodDeclarationTest.cs
@@ -992,7 +992,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1017,7 +1017,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
@@ -1048,7 +1048,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1073,7 +1073,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestWindows/CXXMethodDeclarationTest.cs
index 56aa6a01..d22ffa78 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlLatestWindows/CXXMethodDeclarationTest.cs
@@ -992,7 +992,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1017,7 +1017,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
@@ -1048,7 +1048,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1073,7 +1073,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewUnix/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewUnix/CXXMethodDeclarationTest.cs
index 6f753d62..fd20ea07 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewUnix/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewUnix/CXXMethodDeclarationTest.cs
@@ -990,7 +990,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1015,7 +1015,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
@@ -1046,7 +1046,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1071,7 +1071,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewWindows/CXXMethodDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewWindows/CXXMethodDeclarationTest.cs
index e942b31a..7fa773bb 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewWindows/CXXMethodDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/XmlPreviewWindows/CXXMethodDeclarationTest.cs
@@ -991,7 +991,7 @@ protected override Task VirtualTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1016,7 +1016,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>
@@ -1047,7 +1047,7 @@ protected override Task VirtualWithVtblIndexAttributeTestImpl()
 {
     virtual void MyVoidMethod() = 0;
 
-    virtual char MyInt8Method()
+    virtual signed char MyInt8Method()
     {
         return 0;
     }
@@ -1072,7 +1072,7 @@ virtual char MyInt8Method()
         </body>
       </function>
       <function name=""MyInt8Method"" access=""public"" unsafe=""true"" vtblindex=""1"">
-        <type native=""char"">sbyte</type>
+        <type native=""signed char"">sbyte</type>
         <body>
           <code>return ((delegate* unmanaged[Thiscall]&lt;MyStruct*, sbyte&gt;)(lpVtbl[<vtbl explicit=""False"">1</vtbl>]))(<param special=""thisPtr"">(MyStruct*)Unsafe.AsPointer(ref this)</param>);</code>
         </body>