diff --git a/rtl/aix/sysosh.inc b/rtl/aix/sysosh.inc
index 1d928cc47e..ec776df72a 100644
--- a/rtl/aix/sysosh.inc
+++ b/rtl/aix/sysosh.inc
@@ -18,6 +18,7 @@
 type
   THandle = Longint;
   TThreadID = Cardinal;
+  TOSTimestamp = Int64;
   
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
diff --git a/rtl/amicommon/sysosh.inc b/rtl/amicommon/sysosh.inc
index 1d4adc020b..76fa1d37fc 100644
--- a/rtl/amicommon/sysosh.inc
+++ b/rtl/amicommon/sysosh.inc
@@ -19,6 +19,7 @@
 type
   THandle = PtrInt;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
 
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
diff --git a/rtl/atari/sysosh.inc b/rtl/atari/sysosh.inc
index dbb22bdc87..33b26755da 100644
--- a/rtl/atari/sysosh.inc
+++ b/rtl/atari/sysosh.inc
@@ -23,7 +23,8 @@ type
   THandle = Longint;
 {$endif CPU64}
   TThreadID = THandle;
-  
+  TOSTimestamp = Longint;
+
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
    Locked: boolean
diff --git a/rtl/beos/sysosh.inc b/rtl/beos/sysosh.inc
index bdc66a285e..18e095df07 100644
--- a/rtl/beos/sysosh.inc
+++ b/rtl/beos/sysosh.inc
@@ -20,7 +20,8 @@ type
   { fd are int in C also for 64bit targets (x86_64) }
   THandle = Longint;
   TThreadID = THandle;
-  
+  TOSTimestamp = Int64;
+
   { pthread_mutex_t }
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
diff --git a/rtl/bsd/sysosh.inc b/rtl/bsd/sysosh.inc
index 62585a26e0..819b48c667 100644
--- a/rtl/bsd/sysosh.inc
+++ b/rtl/bsd/sysosh.inc
@@ -21,7 +21,8 @@ type
   THandle = Longint;
   TThreadRec = record end;
   TThreadID  = ^TThreadRec;
-  
+  TOSTimestamp = Int64;
+
   { pthread_mutex_t }
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = {$i pmutext.inc}
diff --git a/rtl/embedded/sysosh.inc b/rtl/embedded/sysosh.inc
index f90bd78c99..b1e443b40e 100644
--- a/rtl/embedded/sysosh.inc
+++ b/rtl/embedded/sysosh.inc
@@ -25,6 +25,7 @@ type
   {$else}
   TThreadID = THandle;
   {$endif}
+  TOSTimestamp = Int64;
 
   { pthread_mutex_t }
   PRTLCriticalSection = ^TRTLCriticalSection;
diff --git a/rtl/emx/sysosh.inc b/rtl/emx/sysosh.inc
index 1576b40ad0..f19bb5612f 100644
--- a/rtl/emx/sysosh.inc
+++ b/rtl/emx/sysosh.inc
@@ -18,9 +18,9 @@
 {Platform specific information}
 type
   THandle = Longint;
-  
   TThreadID = cardinal;
-  
+  TOSTimestamp = Longint;
+
   { the fields of this record are os dependent  }
   { and they shouldn't be used in a program     }
   { only the type TCriticalSection is important }
diff --git a/rtl/gba/sysosh.inc b/rtl/gba/sysosh.inc
index d9a15c94bc..eed146f800 100644
--- a/rtl/gba/sysosh.inc
+++ b/rtl/gba/sysosh.inc
@@ -19,7 +19,8 @@
 type
   THandle = Longint;
   TThreadID = THandle;
-  
+  TOSTimestamp = Longint;
+
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
    Locked: boolean
diff --git a/rtl/go32v2/sysosh.inc b/rtl/go32v2/sysosh.inc
index f2fa9a4ee7..985995fd11 100644
--- a/rtl/go32v2/sysosh.inc
+++ b/rtl/go32v2/sysosh.inc
@@ -19,6 +19,7 @@
 type
   THandle = Longint;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
   
    PRTLCriticalSection = ^TRTLCriticalSection;
    TRTLCriticalSection = record
diff --git a/rtl/haiku/sysosh.inc b/rtl/haiku/sysosh.inc
index bdc66a285e..18e095df07 100644
--- a/rtl/haiku/sysosh.inc
+++ b/rtl/haiku/sysosh.inc
@@ -20,7 +20,8 @@ type
   { fd are int in C also for 64bit targets (x86_64) }
   THandle = Longint;
   TThreadID = THandle;
-  
+  TOSTimestamp = Int64;
+
   { pthread_mutex_t }
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
diff --git a/rtl/java/sysosh.inc b/rtl/java/sysosh.inc
index 6ed894db80..b0d1ebde46 100644
--- a/rtl/java/sysosh.inc
+++ b/rtl/java/sysosh.inc
@@ -16,6 +16,8 @@
 }
 
 type
+  TOSTimestamp = Longint;
+
   FpcRunTimeError = class(JLException)
     errornr: longint;
     constructor create(l: longint);
diff --git a/rtl/linux/sysosh.inc b/rtl/linux/sysosh.inc
index 8916fb0e22..48364f493f 100644
--- a/rtl/linux/sysosh.inc
+++ b/rtl/linux/sysosh.inc
@@ -23,6 +23,8 @@ type
   { pthread_t is defined as an "unsigned long" }
   TThreadID = PtrUInt;
 
+  TOSTimestamp = Int64;
+
   PRTLCriticalSection = ^TRTLCriticalSection;
 {$macro on}
 {$define MUTEXTYPENAME := TRTLCriticalSection}
diff --git a/rtl/macos/sysosh.inc b/rtl/macos/sysosh.inc
index e2d88555cc..f2de4d3b33 100644
--- a/rtl/macos/sysosh.inc
+++ b/rtl/macos/sysosh.inc
@@ -21,11 +21,12 @@ type
   THandle = Longint;
 {$endif CPU64}
   TThreadID = THandle;
+  TOSTimestamp = Longint;
 
-     PRTLCriticalSection = ^TRTLCriticalSection;
-     TRTLCriticalSection = record
-       Locked: boolean
-     end;
+  PRTLCriticalSection = ^TRTLCriticalSection;
+  TRTLCriticalSection = record
+    Locked: boolean
+  end;
 
 
 
diff --git a/rtl/msdos/sysosh.inc b/rtl/msdos/sysosh.inc
index cbed35e287..0c56cec16b 100644
--- a/rtl/msdos/sysosh.inc
+++ b/rtl/msdos/sysosh.inc
@@ -19,8 +19,10 @@
 type
   THandle = Word;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
+
+  PRTLCriticalSection = ^TRTLCriticalSection;
+  TRTLCriticalSection = record
+    Locked: boolean
+  end;
 
-   PRTLCriticalSection = ^TRTLCriticalSection;
-   TRTLCriticalSection = record
-     Locked: boolean
-   end;
diff --git a/rtl/nativent/sysosh.inc b/rtl/nativent/sysosh.inc
index ded0521249..554f614639 100644
--- a/rtl/nativent/sysosh.inc
+++ b/rtl/nativent/sysosh.inc
@@ -17,6 +17,7 @@
 type
   THandle = PtrUInt;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
 
   { the fields of this record are os dependent  }
   { and they shouldn't be used in a program     }
diff --git a/rtl/nds/sysosh.inc b/rtl/nds/sysosh.inc
index d9a15c94bc..eed146f800 100644
--- a/rtl/nds/sysosh.inc
+++ b/rtl/nds/sysosh.inc
@@ -19,7 +19,8 @@
 type
   THandle = Longint;
   TThreadID = THandle;
-  
+  TOSTimestamp = Longint;
+
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
    Locked: boolean
diff --git a/rtl/netware/sysosh.inc b/rtl/netware/sysosh.inc
index 413d7eed54..6908971a8b 100644
--- a/rtl/netware/sysosh.inc
+++ b/rtl/netware/sysosh.inc
@@ -19,6 +19,7 @@
 type
   THandle = DWord;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
   
    { the fields of this record are os dependent  }
    { and they shouldn't be used in a program     }
diff --git a/rtl/netwlibc/sysosh.inc b/rtl/netwlibc/sysosh.inc
index 78f193270d..2f7fd4a24c 100644
--- a/rtl/netwlibc/sysosh.inc
+++ b/rtl/netwlibc/sysosh.inc
@@ -18,7 +18,8 @@
 type
   THandle = DWord;
   TThreadID = THandle;
-  
+  TOSTimestamp = Longint;
+
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = packed record
       mutex : pointer;
diff --git a/rtl/os2/sysosh.inc b/rtl/os2/sysosh.inc
index 023c7c22fa..f19bb5612f 100644
--- a/rtl/os2/sysosh.inc
+++ b/rtl/os2/sysosh.inc
@@ -19,7 +19,8 @@
 type
   THandle = Longint;
   TThreadID = cardinal;
-  
+  TOSTimestamp = Longint;
+
   { the fields of this record are os dependent  }
   { and they shouldn't be used in a program     }
   { only the type TCriticalSection is important }
diff --git a/rtl/palmos/sysosh.inc b/rtl/palmos/sysosh.inc
index b0b2d06855..19d42b3ca8 100644
--- a/rtl/palmos/sysosh.inc
+++ b/rtl/palmos/sysosh.inc
@@ -21,6 +21,7 @@ type
   THandle = Longint;
 {$endif CPU64}
   TThreadID = THandle;
+  TOSTimestamp = Longint;
 
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
diff --git a/rtl/solaris/sysosh.inc b/rtl/solaris/sysosh.inc
index 94acd92672..9bcb24b5ad 100644
--- a/rtl/solaris/sysosh.inc
+++ b/rtl/solaris/sysosh.inc
@@ -18,6 +18,7 @@
 type
   THandle = Longint;
   TThreadID = Cardinal;
+  TOSTimestamp = Int64;
   
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
diff --git a/rtl/symbian/sysosh.inc b/rtl/symbian/sysosh.inc
index 08a1dc523c..250f9f4565 100644
--- a/rtl/symbian/sysosh.inc
+++ b/rtl/symbian/sysosh.inc
@@ -19,6 +19,7 @@
 type
   THandle = Longint;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
 
   { pthread_mutex_t }
   PRTLCriticalSection = ^TRTLCriticalSection;
diff --git a/rtl/watcom/sysosh.inc b/rtl/watcom/sysosh.inc
index a77b4788b3..504d6ac4a1 100644
--- a/rtl/watcom/sysosh.inc
+++ b/rtl/watcom/sysosh.inc
@@ -19,6 +19,7 @@
 type
   THandle = Longint;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
 
    PRTLCriticalSection = ^TRTLCriticalSection;
    TRTLCriticalSection = record
diff --git a/rtl/wii/sysosh.inc b/rtl/wii/sysosh.inc
index d9a15c94bc..eed146f800 100644
--- a/rtl/wii/sysosh.inc
+++ b/rtl/wii/sysosh.inc
@@ -19,7 +19,8 @@
 type
   THandle = Longint;
   TThreadID = THandle;
-  
+  TOSTimestamp = Longint;
+
   PRTLCriticalSection = ^TRTLCriticalSection;
   TRTLCriticalSection = record
    Locked: boolean
diff --git a/rtl/win/sysosh.inc b/rtl/win/sysosh.inc
index 9cdd9ba441..5bee0d4c17 100644
--- a/rtl/win/sysosh.inc
+++ b/rtl/win/sysosh.inc
@@ -24,6 +24,7 @@ type
 {$endif CPU64}
   TThreadID = DWord;
   SIZE_T = ULONG_PTR;
+  TOSTimestamp = Int64;
 
   { the fields of this record are os dependent  }
   { and they shouldn't be used in a program     }
diff --git a/rtl/win16/sysosh.inc b/rtl/win16/sysosh.inc
index cbed35e287..e153102b62 100644
--- a/rtl/win16/sysosh.inc
+++ b/rtl/win16/sysosh.inc
@@ -19,6 +19,7 @@
 type
   THandle = Word;
   TThreadID = THandle;
+  TOSTimestamp = Longint;
 
    PRTLCriticalSection = ^TRTLCriticalSection;
    TRTLCriticalSection = record