I have just begun to use Visual C++ 2008 to create an app for my PC.
Program work both in debug and release mode when its run from visual c++.
When I run release when is visual c++ closed and click on buttons unhandled exception occurred.
So what does that actually mean? How to solve the problem ?
Thanks
See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.OverflowException: Value was either too large or too small for a character.
at System.Convert.ToChar(Int32 value)
at gorskikotar.Form1.chekSum(String DtCS) in c:\users\freza\desktop\ozalj jednajedinica v100\gorskikotar\form1.h:line 1151
at gorskikotar.Form1.slanjeKomande(String tip, String group, String unit, String komanda) in c:\users\freza\desktop\ozalj jedna jedinica v100\gorskikotar\form1.h:line 1127
at gorskikotar.Form1.testAlarmi(String group, String unit) in c:\users\freza\desktop\ozalj jedna jedinica v100\gorskikotar\form1.h:line 1024
at gorskikotar.Form1.uredajiZaTest() in c:\users\freza\desktop\ozalj jedna jedinica v100\gorskikotar\form1.h:line 1011
at gorskikotar.Form1.button8_Click(Object sender, EventArgs e) in c:\users\freza\desktop\ozalj jedna jedinica v100\gorskikotar\form1.h:line 529
I found your problem: In the code you linked to (it should really be in the question) you declare the variable sum, but you do not initialize it. Visual Studio is helpful and clears it for you, but when running outside of VS, then this variable can be anything.
Change declaration line to:
long sum = 0, i, a, b;
Related
I am trying to use the implementation of std::iostream provided by boost::asio on top of boost::asio::ip::tcp::socket. My code replicate almost line to line the example that is published in Boost Asio's documentation:
#include <iostream>
#include <stdexcept>
#include <boost/asio.hpp>
int main()
{
using boost::asio::ip::tcp;
try
{
boost::asio::io_service io_service;
tcp::endpoint endpoint(tcp::v4(), 8000);
tcp::acceptor acceptor(io_service, endpoint);
for (;;)
{
tcp::iostream stream; // <-- The exception is triggered on this line, on the second loop iteration.
boost::system::error_code error_code;
acceptor.accept(*stream.rdbuf(), error_code);
std::cout << stream.rdbuf() << std::flush;
}
}
catch (std::exception& exception)
{
std::cerr << exception.what() << std::endl;
}
return 0;
}
The only difference is the use I make of the resulting tcp::iostream: I forward everything I receive to the standard output.
When I compile this code with VisualStudio2019/toolset v142 and Boost from the NuGet boost-vc142, I get an Access Violation Exception only in the second iteration in the for loop, in the function
template <typename Service>
Service& service_registry::use_service(io_context& owner)
{
execution_context::service::key key;
init_key<Service>(key, 0);
factory_type factory = &service_registry::create<Service, io_context>;
return *static_cast<Service*>(do_use_service(key, factory, &owner));
} // <-- The debugger show the exception was raised on this line
in asio/detail/impl/service_registry.hpp. So the first iteration everything goes as planned, the connection is accepted, the data shows up on the standard output, and as soon as the stream is instanciated on the stack for the second time, the exception pops.
I don't have a high confidence in the accuracy of this location of the exception reported by the debugger. For some reason, the stack seams to be messed up and show only one frame.
If the declaration of stream is moved out of the loop, no exception is raised any more but then I need to stream.close() at the end of the loop, or nothing shows up on the standard output except the data from the first client's connection.
Basically, as soon as I try to instanciate more than one boost::asio::tcp::iostream (not necessarily at the same time), the exception is raised.
I tried the exact same code under linux (Arch linux, latest version of g++, same version of Boost) and everything works perfectly.
I could work around this issue by not using iostreams, but my idea is to feed the data received on the tcp socket to a parser which only accept implementations of std::iostream, hence I would still need to wrap asio's tcp socket in an homebrewed (and mediocre) implementation of std::iostream.
Does anybody have an idea on what's wrong with this setup, if I missed a crucial #define somewhere or anything?
Update:
Subsequent investigation show that the only situation where the access violation happens is when the executable is run from within Visual Studio (typ. from the menu Debug -> Start Debugging).
The build process seems to have no effect (calling directly cl.exe, using MSBuild, using devenv.exe).
Moreover, if the executable is run from a command prompt, and only then the debugger is attached, no access violation happens.
At this point, the issue is most likely not linked to the code itself.
Okay, it was exceedingly painful to test this on windows.
Of course I first tried on Linux (clang/gcc) and MingW 8.1 on windows.
Then I bit the bullet and jumped the hoops to get MSVC in command line with boost packages¹.
I cheated by manually copying the .lib/.dll for boost_{system,date_time,regex} into the working directory so the command line stayed "wieldy":
C:\work>C:\Users\sghee\Downloads\nuget.exe install boost_system-vc142
C:\work>C:\Users\sghee\Downloads\nuget.exe install boost_date_time-vc142
C:\work>C:\Users\sghee\Downloads\nuget.exe install boost_regex-vc142
(Be sure to get some coffee during those)
C:\work\> cl /EHsc test.cpp /I .\boost.1.72.0.0\lib\native\include /link
Now I can run test.exe
C:\work\> test.exe
And it listens fine, accepts connections (sequentially, not simultaneously). If you connect a second client while the first is still connected, it will be queued and be accepted only after the first disconnects. That's fine, because it's what you expect with the synchronous accept and loop.
I used Ncat.exe (from Nmap) to connect:
C:\Program Files (x86)\Nmap>.\ncat.exe localhost 8000
Quirk: The buffering was fine with the MSVC cl.exe build (linewise) as opposed to MingW behaviour, even though MingW also uses ws2_32.dll. #trivia
I know this doesn't "help", but maybe you can compare notes and see what is different with your system.
Video Of Test
¹ (that's a tough job without VS and also I - obviously - ran out of space, because 50GiB for a VM can't be enough right)
Environment: Visual Studio 2017, Windows 10 ver. 1709. Compiling mode: release.
When I call:
accelerator_view acc_view = accelerator().default_view;
an exception is raised (see figure link below), but the code performs fine afterwards.
But when the executable process exits and I call:
::GetExitCodeProcess(hChildProcess, &retVal);
from a caller process, instead of returning 0, it returns a garbage value in retVal.
Digging the source code, the problem seems to be in the snipped code below (SchedulerBase.cpp, line 149)
// Auto-reset event that is not signalled initially
m_hThrottlingEvent = platform::__CreateAutoResetEvent();
// Use a trampoline for UMS
if (!RegisterWaitForSingleObject(&m_hThrottlingWait, m_hThrottlingEvent, SchedulerBase::ThrottlerTrampoline, this, INFINITE, WT_EXECUTEDEFAULT))
{
throw scheduler_resource_allocation_error(HRESULT_FROM_WIN32(GetLastError()));
}
I think it is beyond my hands to fix it, because the code above is inside MFC. The same code works well when compiling with Visual Studio 2013. Refer to the figure attached of the stack, showing the raised exception (and catched inside) when I call
accelerator_view acc_view = accelerator().default_view;
The question: how to clean up the AMP before exiting and the getting the correct result when calling GetExitCodeProcess()?
Here is the figure:
Solved! If you add
concurrency::amp_uninitialize();
after using AMP framework, when the caller process calls
::GetExitCodeProcess(hChildProcess, &retVal);
The retVal parameter is filled correctly.
I am playing with the matrixmultiplication project downloadable from the bottom of the site:
http://blogs.msdn.com/b/nativeconcurrency/archive/2011/11/02/matrix-multiplication-sample.aspx
When I change the values of M, N, W from 256 to 4096, an unhandled exception is thrown:
Unhandled exception at 0x7630C42D in MatrixMultiplication.exe: Microsoft C++ exception: Concurrency::accelerator_view_removed at memory location 0x001CE2F0.
The console output is:
Using device: NVIDIA GeForce GT 640M
MatrixDiemnsion C(4096x4096) = A(4096x4096) * B(4096x4096)
CPU(single core) exec completed.
AMP Simple
The next statement to be executed is leaving the function mxm_amp_simple.
I am using VS2013 Ultimate on Windows 7 Professional N.
Why does this occur and how to prevent this from happening?
EDIT: I have found that the greatest value for M,N,W with which AMP Simple does not lead to a breakpoint being hit is 2800 (M=2800, N=2800, W=2800).
AMP Tiled on the other hand sometimes leads to a breakpoint, and in other cases executes correctly for M,N,W equal to 4096.
The exception is accompanied by a system error message:
"Display driver stopped responding and has recovered. Display driver NVIDIA Windows Kernel Mode Driver, Version 331.65 stopped responding and has successfully recovered."
In case someone else needs this.
This issue is most likely caused by Timeout Detection and Recovery (TDR). If kernel runs for more then 2 seconds windows will kill it and throw Concurrency::accelerator_view_removed exception. The easiest way to check this is to wrap code in try / catch bock. E.g.
try {
av_c.synchronize();
} catch (const Concurrency::accelerator_view_removed& e) {
printf("%s\n", e.what());
}
Microsoft has a blog post with more information, including pointers to instructions how to disable it.
I'm working with crystal report. With crystal report, I have done with few no. of record history. Now just want to load 1139 Records to display and I'm getting this error like above:
Server Error in '/EasyWeb' Application.
The maximum report processing jobs limit configured by your system administrator has been reached.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Runtime.InteropServices.COMException: The maximum report processing jobs limit configured by your system administrator has been reached.
Source Error:
Line 807: dt.Rows.Add(dr);
Line 808: ReportDocument reportdocument = new ReportDocument();
Line 809: reportdocument.Load(Server.MapPath(#"~/Admin/UserReport.rpt"));
Line 810: reportdocument.SetDataSource(myDataSet);
Line 811: reportdocument.SetDatabaseLogon("user", "user123");
Source File: f:\EasyWeb\Admin\User_Management.aspx.cs Line: 809
Stack Trace:
[COMException (0x80041016): The maximum report processing jobs limit configured by your system administrator has been reached.]
CrystalDecisions.ReportAppServer.ClientDoc.ReportClientDocumentClass.Open(Object& DocumentPath, Int32 Options) +0
CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.Open(Object& DocumentPath, Int32 Options) +144
CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDocumentIsOpened() +526
[CrystalReportsException: Load report failed.]
CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDocumentIsOpened() +621
CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename, OpenReportMethod openMethod, Int16 parentJob) +1969
CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename) +186
Admin_User_Management.lbut_print_Click(Object sender, EventArgs e) in f:\EasyWeb\Admin\User_Management.aspx.cs:809
System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +111
System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +79
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053
-------------------------------------Updated-----------------------------------------------
reportdocument.Load(Server.MapPath(#"~/Admin/PostHistoryReport.rpt"));
reportdocument.SetDataSource(myDataSet);
reportdocument.SetDatabaseLogon("user", "user123");
CrystalReportViewer1.ReportSource = reportdocument;
reportdocument.Clone();
reportdocument.Dispose();
GC.Collect();
but it's give me error at loading time i include it's screen shot for summary.
We were facing a similar issue recently and it has nothing to do with the number of records your report is trying to retrieve, but rather the number of times you've used the Crystal Reports runtime to open and access reports, specifically creating and consuming a ReportDocument variable, without closing and disposing it.
Have a look at this related article:
Crystal Reports Exception: The maximum report processing jobs limit configured by your system administrator has been reached
Effectively, the solution for us was the following pattern:
ReportDocument report = CreateReportDocument(reportPath);
// Do stuff with the report
report.Close();
report.Dispose();
GC.Collect();
And that resolved our issue of being able to generate a small number of reports before getting the same exception you have. I hope this helps!
First of all issue the ISSRESET command on cmd prompt to clear logs and put the following code under the Unload event of the report viewer going forward.
Here is an example
Protected Sub CrystalReportViewer1_Unload(ByVal sender As Object, ByVal e As System.EventArgs) Handles CrystalReportViewer1.Unload
master1.Close()
master1.Dispose()
GC.Collect()
End Sub
under
I have an application (extension) that works fine on Windows XP platform. When I run this application on Windows 7 it throws this error. I am not sure what is causing this. I was thinking that it could be due to the fact that .net framework is not installed but I can see all in there. Looking for any ideas to resolve this issue.
Note: this error comes up when I click on a combox box. How can i get past this message box and get to actual error.
Thanks
Jay
See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at MapExt_Net.HEI_Extensions.layout.frmLayout.DisplaySize()
at MapExt_Net.HEI_Extensions.layout.frmLayout.cBLayoutExtent_SelectedIndexChanged(Object sender, EventArgs e)
at System.Windows.Forms.ComboBox.OnSelectedIndexChanged(EventArgs e)
at System.Windows.Forms.ComboBox.WmReflectCommand(Message& m)
at System.Windows.Forms.ComboBox.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
The exception is raised in MapExt_Net.HEI_Extensions.layout.frmLayout.DisplaySize() which seems to be implemented by yourself. Could you please paste the code of the method?