src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp

rev 7793 : 8073315: Enable gcc -Wtype-limits and fix upcoming issues.
Summary: Relevant fixes in blockOffsetTable.cpp, os_linux.cpp, parCardTableModRefBS.cpp.

*** 1,7 ****
  /*
!  * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 5418,5428 ****
      uint stride = MIN2(MAX2(_n_workers, 1U), limit);
  
      // limit is set using max_num_q() - which was set using ParallelGCThreads.
      // So this must be true - but assert just in case someone decides to
      // change the worker ids.
!     assert(0 <= worker_id && worker_id < limit, "sanity");
      assert(!rp->discovery_is_atomic(), "check this code");
  
      // Select discovered lists [i, i+stride, i+2*stride,...,limit)
      for (uint idx = worker_id; idx < limit; idx += stride) {
        DiscoveredList& ref_list = rp->discovered_refs()[idx];
--- 5418,5428 ----
      uint stride = MIN2(MAX2(_n_workers, 1U), limit);
  
      // limit is set using max_num_q() - which was set using ParallelGCThreads.
      // So this must be true - but assert just in case someone decides to
      // change the worker ids.
!     assert(worker_id < limit, "sanity");
      assert(!rp->discovery_is_atomic(), "check this code");
  
      // Select discovered lists [i, i+stride, i+2*stride,...,limit)
      for (uint idx = worker_id; idx < limit; idx += stride) {
        DiscoveredList& ref_list = rp->discovered_refs()[idx];