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  1. Qt
  2. QTBUG-25371

QVector += QVector destroys pre-allocation

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

      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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            biochimia João Abecasis
            hjk hjk
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              Created:
              Updated:
              Resolved:

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