--- old/src/share/vm/opto/escape.cpp	2015-08-31 17:27:19.280270925 +0200
+++ new/src/share/vm/opto/escape.cpp	2015-08-31 17:27:18.969764724 +0200
@@ -3241,7 +3241,7 @@
     // Note 2: MergeMem may already contains instance memory slices added
     // during find_inst_mem() call when memory nodes were processed above.
     igvn->hash_delete(nmm);
-    uint nslices = nmm->req();
+    uint nslices = MIN2(nmm->req(), new_index_start);
     for (uint i = Compile::AliasIdxRaw+1; i < nslices; i++) {
       Node* mem = nmm->in(i);
       Node* cur = NULL;