[ET Trac] [Einstein Toolkit] #1846: Very large grids with bboxset2

[Einstein Toolkit]

#1846: Very large grids with bboxset2
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  Reporter:  hinder  |       Owner:  eschnett           
      Type:  defect  |      Status:  confirmed          
  Priority:  major   |   Milestone:                     
 Component:  Carpet  |     Version:  development version
Resolution:          |    Keywords:                     
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Comment (by eschnett):

 This patch
 {{{
 diff --git a/CarpetLib/src/bboxset2.hh b/CarpetLib/src/bboxset2.hh
 index f0d7a9d..2d58925 100644
 --- a/CarpetLib/src/bboxset2.hh
 +++ b/CarpetLib/src/bboxset2.hh
 @@ -943,7 +943,7 @@ template <typename T, int D> size_type bboxset<T,
 D>::size() const {
  #else
    TRAVERSE_SUBSETS1(const T &pos(_1); const bboxset1 &subset(_2); {
      const size_type subset_size = subset.size();
 -    total_size += (pos - old_pos) * old_subset_size;
 +    total_size += old_subset_size == 0 ? 0 : (pos - old_pos) *
 old_subset_size;
      old_pos = pos;
      old_subset_size = subset_size;
    });
 }}}
 may prevent an integer overflow, if CARPET_AVOID_LAMBDA is set.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1846#comment:3>
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