Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-92941

REG 5->6: QVector size() does not reach capacity() before reallocating

    XMLWordPrintable

Details

    • Bug
    • Resolution: Unresolved
    • P1: Critical
    • None
    • 6.0, 6.1, 6.2
    • Core: Containers and Algorithms
    • None

    Description

      This code regressed in Qt 6:

          QVector<int> v;
    v.resize(4);
    v.erase(v.begin());
    while (v.size() < v.capacity()) {
        v.push_back(0);
    }

      The while loop never terminates; the vector is reallocated too early, when size() == capacity() - 1, and keeps getting reallocated like that.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-93019 [REG 5.15-6.0] QList/QVector regressions

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Open
          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

              thiago Thiago Macieira
              peppe Giuseppe D'Angelo
              Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

                Created:
                Updated:

                Gerrit Reviews

                  There are no open Gerrit changes