[Plplot-cvs] SF.net SVN: plplot:[9479] trunk/src/plctrl.c

[<and...@us...>]

Revision: 9479
          http://plplot.svn.sourceforge.net/plplot/?rev=9479&view=rev
Author:   andrewross
Date:     2009-02-09 10:47:34 +0000 (Mon, 09 Feb 2009)

Log Message:
-----------
Modify plsnprintf so that plplot will abort if a buffer overrun occurs. 
This is only used if snprintf is not natively available, and instead it 
calls sprintf. We can detect when an overflow occurs, but not prevent 
it, so the safest thing is probably to abort.

Modified Paths:
--------------
    trunk/src/plctrl.c

Modified: trunk/src/plctrl.c
===================================================================
--- trunk/src/plctrl.c	2009-02-09 09:41:11 UTC (rev 9478)
+++ trunk/src/plctrl.c	2009-02-09 10:47:34 UTC (rev 9479)
@@ -2151,6 +2151,10 @@
   va_start(args, format);
 	ret=vsprintf(buffer, fmt, args);
   va_end( argptr );
+ 
+  /* Check if overrun occured */
+  if (ret > n-1) 
+    plabort("plsnprintf: buffer overrun");
   
   return ret;
 }


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