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  1. Qt
  2. QTBUG-25371

QVector += QVector destroys pre-allocation

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Details

    • Bug
    • Resolution: Duplicate
    • Not Evaluated
    • None
    • 4.8.0, 5.0.0
    • Core: Containers and Algorithms
    • None

    Description

      QVector<int> a, b; 
a.reserve(1000); 
b.append(1); 
a += b;

      results in calling QVector::realloc(0, 1); essentially destroying the pre-allocation

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          is replaced by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-22164 QVector reallocates when appending another vector even when there is enough capacity

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              biochimia João Abecasis
              hjk hjk
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              Dates

                Created:
                Updated:
                Resolved:

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