diff -up xulrunner-8.0/mozilla-beta/configure.gc xulrunner-8.0/mozilla-beta/configure
--- xulrunner-8.0/mozilla-beta/configure.gc	2011-10-06 10:43:40.000000000 +0200
+++ xulrunner-8.0/mozilla-beta/configure	2011-10-06 10:44:32.279428434 +0200
@@ -21319,7 +21319,7 @@ else
            test -s conftest${ac_exeext} -a -s conftest.${ac_objext}; then
             if test "`$PYTHON "$_topsrcdir"/build/unix/check_debug_ranges.py conftest.${ac_objext} conftest.${ac_ext}`" = \
                     "`$PYTHON "$_topsrcdir"/build/unix/check_debug_ranges.py conftest${ac_exeext} conftest.${ac_ext}`"; then
-                GC_SECTIONS_BREAKS_DEBUG_RANGES=no
+                GC_SECTIONS_BREAKS_DEBUG_RANGES=yes
             else
                 GC_SECTIONS_BREAKS_DEBUG_RANGES=yes
             fi