diff -r f81a7c0c618d -r 22b8d3d181d9 src/share/vm/gc_implementation/parallelScavenge/psAdaptiveSizePolicy.cpp
--- a/src/share/vm/gc_implementation/parallelScavenge/psAdaptiveSizePolicy.cpp	Wed Oct 03 08:08:52 2012 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/psAdaptiveSizePolicy.cpp	Wed Oct 03 20:31:41 2012 +0200
@@ -941,9 +941,9 @@
   return promo_heap_delta;
 }
 
-int PSAdaptiveSizePolicy::compute_survivor_space_size_and_threshold(
+uint PSAdaptiveSizePolicy::compute_survivor_space_size_and_threshold(
                                              bool is_survivor_overflow,
-                                             int tenuring_threshold,
+                                             uint tenuring_threshold,
                                              size_t survivor_limit) {
   assert(survivor_limit >= _intra_generation_alignment,
          "survivor_limit too small");