# HG changeset patch
# User zgu
# Date 1361451048 18000
# Node ID fc64254f55794b34116b92fb8b716e4354ea1c6f
# Parent  b6d5b3e50379eb815aff6d9c5b9512097cde4226
8008071: Crashed in promote_malloc_records() with Kitchensink after 19 days
Summary: Added NULL pointer check for arena size record
Reviewed-by: sspitsyn, dholmes

diff -r b6d5b3e50379 -r fc64254f5579 src/share/vm/services/memSnapshot.cpp
--- a/src/share/vm/services/memSnapshot.cpp	Wed Feb 20 19:36:25 2013 -0800
+++ b/src/share/vm/services/memSnapshot.cpp	Thu Feb 21 07:50:48 2013 -0500
@@ -528,7 +528,8 @@
         // an arena record can be followed by a size record, we need to remove both
         if (matched_rec->is_arena_record()) {
           MemPointerRecord* next = (MemPointerRecord*)malloc_snapshot_itr.peek_next();
-          if (next->is_arena_memory_record() && next->is_memory_record_of_arena(matched_rec)) {
+          if (next != NULL && next->is_arena_memory_record() &&
+              next->is_memory_record_of_arena(matched_rec)) {
             malloc_snapshot_itr.remove();
           }
         }