--- boost_1_43_0/tools/build/v2/tools/builtin.jam.orig	2010-04-20 14:05:14.000000000 +0200
+++ boost_1_43_0/tools/build/v2/tools/builtin.jam	2010-08-24 13:11:22.693678370 +0200
@@ -386,7 +386,7 @@
 
 
 variant debug   : <optimization>off <debug-symbols>on <inlining>off
-                  <runtime-debugging>on ;
+                  <runtime-debugging>on <define>_GLIBCXX_DEBUG ;
 variant release : <optimization>speed <debug-symbols>off <inlining>full
                   <runtime-debugging>off <define>NDEBUG ;
 variant profile : release : <profiling>on <debug-symbols>on ;