diff --git a/ompi/contrib/vt/vt/ChangeLog b/ompi/contrib/vt/vt/ChangeLog
index 42f12b68a7..0704e9c7a1 100644
--- a/ompi/contrib/vt/vt/ChangeLog
+++ b/ompi/contrib/vt/vt/ChangeLog
@@ -1,3 +1,7 @@
+5.8.3openmpi
+	- fixed compile error on Red Hat 5.x which occurred if using GNU
+	  compiler with -D_FORTIFY_SOURCE=2
+
 5.8.2openmpi
 	- fixed buffer overflow which occurred if marker or event comment
 	  records generated
diff --git a/ompi/contrib/vt/vt/VERSION b/ompi/contrib/vt/vt/VERSION
index bf41f933fd..2c38235b5f 100644
--- a/ompi/contrib/vt/vt/VERSION
+++ b/ompi/contrib/vt/vt/VERSION
@@ -1 +1 @@
-5.8.2openmpi
+5.8.3openmpi
diff --git a/ompi/contrib/vt/vt/config/m4/acinclude.iowrap.m4 b/ompi/contrib/vt/vt/config/m4/acinclude.iowrap.m4
index 1f63af340f..86f4c3c0e3 100644
--- a/ompi/contrib/vt/vt/config/m4/acinclude.iowrap.m4
+++ b/ompi/contrib/vt/vt/config/m4/acinclude.iowrap.m4
@@ -11,6 +11,7 @@ AC_DEFUN([ACVT_IOWRAP],
 		sav_CPPFLAGS=$CPPFLAGS
 		CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE -D_LARGEFILE64_SOURCE"
 		AC_CHECK_FUNCS([ \
+			__fprintf_chk \
 			creat64 \
 			fopen64 \
 			fseeko \
diff --git a/ompi/contrib/vt/vt/doc/UserManual.html b/ompi/contrib/vt/vt/doc/UserManual.html
index af707ab677..f384d7db80 100644
--- a/ompi/contrib/vt/vt/doc/UserManual.html
+++ b/ompi/contrib/vt/vt/doc/UserManual.html
@@ -23,35 +23,35 @@ original version by:  Nikos Drakos, CBLU, University of Leeds
 .BOLDMATH { font-family: "Century Schoolbook", serif; font-weight: bold }
 
 /* implement both fixed-size and relative sizes */
-SMALL.XTINY		{ font-size : xx-small }
-SMALL.TINY		{ font-size : x-small  }
-SMALL.SCRIPTSIZE	{ font-size : smaller  }
-SMALL.FOOTNOTESIZE	{ font-size : small    }
-SMALL.SMALL		{  }
-BIG.LARGE		{  }
-BIG.XLARGE		{ font-size : large    }
-BIG.XXLARGE		{ font-size : x-large  }
-BIG.HUGE		{ font-size : larger   }
-BIG.XHUGE		{ font-size : xx-large }
+SMALL.XTINY   { font-size : xx-small }
+SMALL.TINY    { font-size : x-small  }
+SMALL.SCRIPTSIZE  { font-size : smaller  }
+SMALL.FOOTNOTESIZE  { font-size : small    }
+SMALL.SMALL   {  }
+BIG.LARGE   {  }
+BIG.XLARGE    { font-size : large    }
+BIG.XXLARGE   { font-size : x-large  }
+BIG.HUGE    { font-size : larger   }
+BIG.XHUGE   { font-size : xx-large }
 
 /* heading styles */
-H1		{  }
-H2		{  }
-H3		{  }
-H4		{  }
-H5		{  }
+H1    {  }
+H2    {  }
+H3    {  }
+H4    {  }
+H5    {  }
 
 /* mathematics styles */
-DIV.displaymath		{ }	/* math displays */
-TD.eqno			{ }	/* equation-number cells */
+DIV.displaymath   { } /* math displays */
+TD.eqno     { } /* equation-number cells */
 
 
 /* document-specific styles come next */
-PRE.preform		{   }
-DIV.navigation		{   }
-SPAN.textbf		{ font-weight: bold  }
-SPAN.arabic		{   }
-SPAN.textit		{ font-style: italic  }
+PRE.preform   {   }
+DIV.navigation    {   }
+SPAN.textbf   { font-weight: bold  }
+SPAN.arabic   {   }
+SPAN.textit   { font-style: italic  }
 body {font-family: sans-serif;}
 </STYLE>
 
@@ -62,7 +62,7 @@ body {font-family: sans-serif;}
 <P>
 
 <P>
-<B><BIG CLASS="XHUGE">VampirTrace 5.8.2 User Manual</BIG></B>
+<B><BIG CLASS="XHUGE">VampirTrace 5.8.3 User Manual</BIG></B>
 <BR>
 <BR>
 <BR>
diff --git a/ompi/contrib/vt/vt/doc/UserManual.pdf b/ompi/contrib/vt/vt/doc/UserManual.pdf
index ed6434619b..e883d0f2e2 100644
Binary files a/ompi/contrib/vt/vt/doc/UserManual.pdf and b/ompi/contrib/vt/vt/doc/UserManual.pdf differ
diff --git a/ompi/contrib/vt/vt/vtlib/vt_iowrap.c b/ompi/contrib/vt/vt/vtlib/vt_iowrap.c
index af5e2fb464..38badc992b 100644
--- a/ompi/contrib/vt/vt/vtlib/vt_iowrap.c
+++ b/ompi/contrib/vt/vt/vtlib/vt_iowrap.c
@@ -1392,7 +1392,11 @@ int fscanf(FILE *stream, const char *format, ...)
 }
 
 
+#if defined(HAVE___FPRINTF_CHK) && HAVE___FPRINTF_CHK
+int __fprintf_chk(FILE *stream, int flag, const char *format, ...)
+#else /* HAVE___FPRINTF_CHK */
 int fprintf(FILE *stream, const char *format, ...)
+#endif /* HAVE___FPRINTF_CHK */
 {
 #define VT_IOWRAP_THISFUNCNAME fprintf
 	int ret;
@@ -1410,7 +1414,11 @@ int fprintf(FILE *stream, const char *format, ...)
 	
 		vt_debug_msg(DBG_IO, "vfprintf");
 		va_start (arg, format);
-		ret = vfprintf(stream, format, arg);
+#if defined(HAVE___FPRINTF_CHK) && HAVE___FPRINTF_CHK
+		ret = __vfprintf_chk(stream, flag, format, arg);
+#else /* HAVE___FPRINTF_CHK */
+		ret = fprintf(stream, format, arg);
+#endif /* HAVE___FPRINTF_CHK */
 		va_end (arg);
 	
 		num_bytes = (ssize_t)ret;
@@ -1421,7 +1429,11 @@ int fprintf(FILE *stream, const char *format, ...)
 	}
 	else {
 		va_start (arg, format);
+#if defined(HAVE___FPRINTF_CHK) && HAVE___FPRINTF_CHK
+		ret = __vfprintf_chk(stream, flag, format, arg);
+#else /* HAVE___FPRINTF_CHK */
 		ret = vfprintf(stream, format, arg);
+#endif /* HAVE___FPRINTF_CHK */
 		va_end (arg);
 		return ret;
 	}