Hi,
we provide a software for our customers that can show either a graph or a table with
the measured values at a specific time. When i have big data and switch to table view
our software crashed with the message:

Qt Code: 
  1. In file ..\..\include/QtCore/../../src/corelib/tools/qvector.h, line 538: Out of memory
  2. Invalid parameter passed to C runtime function.
  3. Invalid parameter passed to C runtime function.
  4. exited with code 3
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Our software crashes (Release) at around 1,8 GB memory usage (from Windows 7 task manager).

qvector.h (Qt 5.6.2)
Qt Code: 
  1. template <typename T>
  2. void QVector<T>::reallocData(const int asize, const int aalloc, QArrayData::AllocationOptions options)
  3. {
  4.     Q_ASSERT(asize >= 0 && asize <= aalloc);
  5.     Data *x = d;
  6.  
  7.     const bool isShared = d->ref.isShared();
  8.  
  9.     if (aalloc != 0) {
  10.         if (aalloc != int(d->alloc) || isShared) {
  11.             QT_TRY {
  12.                 // allocate memory
  13.                 x = Data::allocate(aalloc, options);
  14.                 Q_CHECK_PTR(x);   // THIS IS LINE 538
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and this is the code to fill the table
Qt Code: 
  1. for(int u=itemList.at(i)->idx;u<itemList.at(i)->mData->values.size();u++){
  2.  
  3.                 if(ui->tableWidget->rowCount() < u+1)
  4.                     ui->tableWidget->setRowCount(u+1);
  5.  
  6.                 QTableWidgetItem* itemt = new QTableWidgetItem(loc.toString(itemList.at(i)->mData->timestamps.at(u)));
  7.                 itemt->setTextColor(itemList.at(i)->color);
  8.                 ui->tableWidget->setItem(u,(i+1)*2-2,itemt);
  9.  
  10.                 QString tmp;
  11.                 if(itemList.at(i)->mData->errorFlag.length() > u){
  12.                     if(itemList.at(i)->mData->errorFlag.at(u) == 0){
  13.  
  14.                         tmp = loc.toString(itemList.at(i)->mData->values.at(u)*setManager->getPressureFactor());
  15.                     }
  16.                     else if(itemList.at(i)->mData->errorFlag.at(u) & errflgUR) // Error UR
  17.                         tmp  = tr("Underrange");
  18.                     else if(itemList.at(i)->mData->errorFlag.at(u) & errflgOR) // Error OR
  19.                         tmp  = tr("Overrange");
  20.                     else if(itemList.at(i)->mData->errorFlag.at(u) & errflgSEDIS ) // Error SEDIS
  21.                         tmp = tr("Sensor disabled");
  22.                 }
  23.  
  25.                 itemp->setTextColor(itemList.at(i)->color);
  26.                 ui->tableWidget->setItem(u,(i+1)*2-1,itemp);
  27.  
  28.                 itemList.at(i)->idx = u;
  29.             }
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Has someone any idea to improve our code or any other help is welcome?
HappyCoder