diff --git a/tests/tbs/tb0427.pp b/tests/tbs/tb0427.pp
new file mode 100644
index 0000000000..270e337d64
--- /dev/null
+++ b/tests/tbs/tb0427.pp
@@ -0,0 +1,80 @@
+{$MODE objFPC}
+unit tb0427;
+// Purpose: Demonstrate Internal Error #10
+// 
+// Version: Free Pascal Compiler version 1.0.6 [2002/04/23] for i386
+//          Copyright (c) 1993-2002 by Florian Klaempfl
+// 
+// Compiler Output:
+//  Free pascal Compiler version 1.0.6 [2002/04/23] for i386
+//  Copyright (c) 1993-2002 by Florian Klaempfl
+//  Target OS: Win32 for i386
+//  Compiling c:\windows\desktop\files\projects\sageapi\t.pas
+//  t.pas(68,51) Fatal: Internal error 10
+// 
+// Bug Contributor: 
+//   Jason Sage   
+//   jazesage@aol.com 
+//
+// Date Contributed:  2002-12-01
+// System OS: MS Windows ME v4.90.3000
+// System: Compaq, Genuine Intel, Intel(r) Celeron(tm) processor
+//         63.0MB Ram
+//
+interface
+
+implementation
+
+type TClass = class
+  protected
+  VBuf: ^word;
+  public
+  constructor Init;
+  destructor Done;
+  procedure Test(p_dwNewWidth, p_dwNewHeight: Cardinal);
+end;  
+
+var 
+    MyClass: TClass;
+
+constructor TClass.Init; begin GetMem(VBuf,2); end;
+
+destructor TClass.Done; begin freemem(VBuf); end;
+
+procedure TClass.Test(p_dwNewWidth, p_dwNewHeight: Cardinal);
+var 
+  OldVBuf: ^word;
+  t,s: Cardinal;
+  w,h: Cardinal; // preserve Width and Height of VC
+  wData: word;
+begin
+  getmem(OldVBuf,1); freemem(OldVBuf); // shutoff hint
+  w:=w; h:=h; // shut off hint
+  OldVBuf:=VBuf;
+  GetMem(VBuf, p_dwNewWidth * p_dwNewHeight * 2);
+  for t:=1 to W do // won't cause error if you do this the more efficient
+  begin            // way: for t:=0 to W-1 do
+    for s:=1 to H do//     for s:=0 to H-1 do 
+    begin           // and replace the [(t-1)+((s-1)*W)] logic to [t+s*w]
+      if (t<=p_dwNewWidth) and (s<=p_dwNewHeight) then
+      begin
+        {
+        // This is the work around that I used in my UNIT and the code Works
+        wData:=OldVBuf[(t-1)+(s-1)*H];
+        VBuf[(t-1)+((s-1)*p_dwNewWidth)]:=wData;
+        }
+
+        // This way causes an Internal Error 10 from the compiler.
+        VBuf[(t-1)+((s-1)*p_dwNewWidth)]:=OldVBuf[(t-1)+(s-1)*H];
+      end;
+    end;
+  end;
+  Freemem(OldVBuf);
+end;
+
+begin
+  MyClass:=TClass.Init;
+  MyClass.Test(1,1);
+  MyClass.Done;
+end.  
+