Fix snprintf usage.

eeschema/sch_item_struct.cpp

@@ -2,7 +2,7 @@
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
  * Copyright (C) 2006 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
- * Copyright (C) 1992-2011 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 1992-2015 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -112,8 +112,7 @@ std::string SCH_ITEM::FormatInternalUnits( int aValue )
 
     if( engUnits != 0.0 && fabs( engUnits ) <= 0.0001 )
     {
-        // printf( "f: " );
-        len = snprintf( buf, 49, "%.10f", engUnits );
+        len = snprintf( buf, sizeof(buf), "%.10f", engUnits );
 
         while( --len > 0 && buf[len] == '0' )
             buf[len] = '\0';
@@ -122,8 +121,7 @@ std::string SCH_ITEM::FormatInternalUnits( int aValue )
     }
     else
     {
-        // printf( "g: " );
-        len = snprintf( buf, 49, "%.10g", engUnits );
+        len = snprintf( buf, sizeof(buf), "%.10g", engUnits );
     }
 
     return std::string( buf, len );
@@ -135,7 +133,7 @@ std::string SCH_ITEM::FormatAngle( double aAngle )
     char temp[50];
     int len;
 
-    len = snprintf( temp, 49, "%.10g", aAngle / 10.0 );
+    len = snprintf( temp, sizeof(temp), "%.10g", aAngle / 10.0 );
 
     return std::string( temp, len );
 }

lib_dxf/libdxfrw.cpp

@@ -3818,7 +3818,7 @@ std::string dxfRW::toHexStr( int n )
 {
 #if defined(__APPLE__)
     char buffer[9] = { '\0' };
-    snprintf( buffer, 9, "%X", n );
+    snprintf( buffer, sizeof(buffer), "%X", n );
     return std::string( buffer );
 #else
     std::ostringstream Convert;

scripting/python_scripting.cpp

@@ -144,7 +144,7 @@ bool pcbnewInitPythonScripting( const char * aUserPluginsPath )
     // Make sure that that the correct version of wxPython is loaded. In systems where there
     // are different versions of wxPython installed this can lead to select wrong wxPython
     // version being selected.
-    snprintf( cmd, 1023, "import wxversion; wxversion.select('%s')", WXPYTHON_VERSION );
+    snprintf( cmd, sizeof(cmd), "import wxversion; wxversion.select('%s')", WXPYTHON_VERSION );
     PyRun_SimpleString( cmd );
 
     // Load the wxPython core API.  Imports the wx._core_ module and sets a
@@ -168,7 +168,7 @@ bool pcbnewInitPythonScripting( const char * aUserPluginsPath )
     {
         char cmd[1024];
         PyLOCK lock;
-        sprintf( cmd, "import sys, traceback\n"
+        snprintf( cmd, sizeof(cmd), "import sys, traceback\n"
                       "sys.path.append(\".\")\n"
                       "import pcbnew\n"
                       "pcbnew.LoadPlugins(\"%s\")", aUserPluginsPath );