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  1. Qt
  2. QTBUG-44160

Crash in Qt Serial Port when using USB-serial adapter

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P1: Critical
    • Resolution: Invalid
    • Affects Version/s: 5.4.0
    • Fix Version/s: None
    • Component/s: Serial Port
    • Labels:

      Description

      There seems to be a heap corruption after calling QSerialPortInfo::availablePorts(), because deleting the resulting list causes
      ------
      Debug Assertion Failed!
      File: f:\dd\vctools\crt\crtw32\misc\dbgdel.cpp
      Line: 52
      Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse)
      ------
      This happens only with an USB-serial adapter. If you haven't plugged in any adapters the application works correctly.
      The test application is straightforward:

      #include <QList>
      #include <QtSerialPort/QSerialPortInfo>
      
      void infoTest()
      {
          QList<QSerialPortInfo> ports = QSerialPortInfo::availablePorts();
      }
      
      void main(int, char)
      {
          infoTest();
      }
      

      The crash happens when exiting the infoTest() function i.e. when deleting the ports list.

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            Assignee:
            kuzulis Denis Shienkov
            Reporter:
            qtcomsupport Qt Support
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              Dates

              Created:
              Updated:
              Resolved:

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