Exception at exact same location on each build in C++

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Chaitanya Jha
Chaitanya Jha 2020-11-12
编辑： Chaitanya Jha 2020-11-12
Hi, I am trying to write .mat files using C++. I am using Microsoft Visual Studio 2019 along with Qt to develop my application.
MainWindow.h
#include <QtWidgets/QMainWindow>
#include "ui_mainwindow.h"
#include "mat.h"
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = Q_NULLPTR);
private:
Ui::MainWindowClass ui;
};
MainWindow.cpp
#include "mainwindow.h"
% Following exceptions are thrown even before starting with constructor:
% Exception thrown at 0x00007FFE85813E49 in MatFileTest2.exe: Microsoft C++ exception: mwboost::exception_detail::clone_impl<fl::filesystem::InvalidArgument> at memory location 0x000000BDFB52E410.
% Exception thrown at 0x00007FFE85813E49 in MatFileTest2.exe: Microsoft C++ exception: mwboost::exception_detail::clone_impl<fl::i18n::LcRscOpenFileFailure> at memory location 0x000000BDFB52E1B0.
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
ui.setupUi(this);
MATFile* myFile = NULL;
mxArray* myData = NULL;
mwSize myRow = 1000000;
mwSize myCol = 1;
myData = mxCreateDoubleMatrix(myRow, myCol, mxREAL); % Line at which below exception is thrown:
% Exception thrown at 0x00007FFE85813E49 in MatFileTest2.exe: Microsoft C++ exception: foundation::core::except::detail::AnonymousInternalException<foundation::usm::NoActiveContextTypeError> at memory location 0x0000009D6A6FEFB8.
% This exception complains about .pdb file not being loaded
double* ary = new double[1000000];
for(int ii = 0; ii < 1000000; ++ii){
ary[ii] = ii*0.33;
}
myFile = matOpen("MATTest.mat", "w");
mxSetData(myData, ary);
matPutVariable(myFile, "Sweep_1", myData);
matClose(myFile);
}
The program is running fine and it is generating the 'MATTest.mat' file. But it keeps on throwing an exception in the output. This exception is thrown even before I enter the MainWindow Constructor. The most peculiar thing about these exceptions is that no matter how many times I run the solution the location of exception being thrown doesn't change. It is always: Exception thrown at 0x00007FFE85813E49. I guess this has something to do with my .exe file but I can't help but wonder why? My .exe file should get a different pointer each time the program is run then why the exception has the exact same location?
Can someone please help me with this problem? I am unable to find any concrete information regarding how to solve this on the internet.
Below is my configuration:
System: Windows 10 Pro, Version: 2004, OS build: 19041.572
IDE: Microsoft Visual Studio Community 2019, Version 16.7.6
Matlab: R2019a (9.6.0.1072779 (win64)
EDIT 1: I have posted the same question on Stack Overflow.

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