src/share/vm/gc_implementation/g1/heapRegionSet.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) 2011, 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) 2011, 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.
*** 54,65 ****
    // for the verification calls. If we do verification without the
    // appropriate locks and the set changes underneath our feet
    // verification might fail and send us on a wild goose chase.
    check_mt_safety();
  
!   guarantee(( is_empty() && length() == 0 && total_capacity_bytes() == 0) ||
!             (!is_empty() && length() >= 0 && total_capacity_bytes() >= 0),
              hrs_ext_msg(this, "invariant"));
  }
  
  void HeapRegionSetBase::verify_start() {
    // See comment in verify() about MT safety and verification.
--- 54,64 ----
    // for the verification calls. If we do verification without the
    // appropriate locks and the set changes underneath our feet
    // verification might fail and send us on a wild goose chase.
    check_mt_safety();
  
!   guarantee((is_empty() && length() == 0 && total_capacity_bytes() == 0) || !is_empty(),
              hrs_ext_msg(this, "invariant"));
  }
  
  void HeapRegionSetBase::verify_start() {
    // See comment in verify() about MT safety and verification.