I have a method, which generates a huge QVector<uchar> (SIZE: 354792000), and memmory is allocated/freed up dynamically, for convenience I use QScopedPointer:
void someMethod(int SIZE) {
chVec.reset(new QVector<uchar>(SIZE));
/*doing some stuff with an array...*/
chVec.data()->clear();
chVec.data()->squeeze();
}
Creating arrays of small size - no problem, you can also create one array of large size, but when I call the method again, I get the error "Invalid parameter passed to C runtime function". It went through a debugger, an error occurs when trying to allocate space for a new array:
template <typename T>
QVector<T>::QVector(int asize, const T &t)
{
Q_ASSERT_X(asize >= 0, "QVector::QVector", "Size must be greater than or equal to 0.");
if (asize > 0) {
d = Data::allocate(asize);
Q_CHECK_PTR(d); /*<------ Error occured*/
d->size = asize;
T* i = d->end();
while (i != d->begin())
new (--i) T(t);
} else {
d = Data::sharedNull();
}
}
Data::allocate(asize); :
Q_REQUIRED_RESULT static QTypedArrayData *allocate(size_t capacity,
AllocationOptions options = Default)
{
Q_STATIC_ASSERT(sizeof(QTypedArrayData) == sizeof(QArrayData));
return static_cast<QTypedArrayData *>(QArrayData::allocate(sizeof(T),
Q_ALIGNOF(AlignmentDummy), capacity, options));
}
What could it be? A memory leak (it is impossible to allocate such a large chunk of contiguous memory again, since the previous call did not free the memory?)? ... I just can’t understand what the problem is, before leaving the method scope, I even manually clean the array and free the memory ... I would be grateful for any advice
