Memory leaks when inlcuding the libary in MFC project

[BasConijn]

I have created an test MFC project to remove every dependency. cpprest.zip. Compiled with visual studio 2013.
I have added the project using NuGet.

After executing the project visual studio reports a lot of memory leaks.
I have added visual leak detector, but that reports no leaks (First two lines of the pastebin).
See http://pastebin.com/KdLDtAf6.
Adding the cpprest120d_2_8.dll to the delayed dll import (linker->input) solves most of the leaks (only leaks of #67 remain).

However, I receive "cannot delay load 'cpprest120d_2_8.dll' " when using the http_client class.

When uncommenting the "CreateRequest" functions, even more memory leaks happen.
These are also reported by Visual Leak Detector.
See http://pastebin.com/wGWdEuBB

Anyone knows where the leaks are coming from or how I can ignore them?

[nathan-gilbert]

Did you ever find a solution to this problem?

[BasConijn]

Nope. I am not sure where to look though.

[Yavathar]

I'm experiencing the same memory leaks.
What I have in my codes are

1. including the head file
   #include <cpprest\http_client.h>
2. in my class' method,
   unsigned int CMy::http_post() { web::http::http_request requestGCM(L"POST"); return 0; }
   Actually In runtime my codes never call the above method. But, when my program ends, a lot of memory leaks are found.

I wonder this issue will be fixed by someone?

[Adding comments]
The memory leaks happen when I test with web::json::value.
I only declared a valable, jsonBody like;
web::json::value jsonBody;
in a function that I've never called in my code.

[Curry-Messi]

You try

Project Properties
Linker->Input->Add library dependencies
mfc120ud.lib;mfcm120ud.lib

[PversusNP]

I have the same problem.
I compiled cpprest140 source (version 2.10.2) with visual studio 2015 for Win32.
I linked it in my MFC project and if I run the application, without calling any cpprest api, when I stop I get memory leaks.
What's the solution?
Thanks.

[yzxandfcm]

I have the same problem. How can fix this issue

[Curry-Messi]

you can try it like this:open "Projects->properties->Linker->input" in "Additional Dependencies" add mfc120ud.lib mfcm120ud.lib vs2017: mfc140ud.lib mfcm140ud.lib At 2020-05-06 12:24:18, "Jack" <[email protected]> wrote: I have the same problem. How can fix this issue — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.

[yzxandfcm]

Curry, Thanks for your proposal, But I used vs2019, I can NOT find any files like the mfcxxxx.lib. Thanks. Best Regrards, Jack Yuan From: Curry-Messi Date: 2020-05-12 09:13 To: microsoft/cpprestsdk CC: Jack; Comment Subject: Re: [microsoft/cpprestsdk] Memory leaks when inlcuding the libary in MFC project (#99) you can try it like this:open "Projects->properties->Linker->input" in "Additional Dependencies" add mfc120ud.lib mfcm120ud.lib vs2017: mfc140ud.lib mfcm140ud.lib At 2020-05-06 12:24:18, "Jack" <[email protected]> wrote: I have the same problem. How can fix this issue — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.

[Currywurst]

Hi, we have an large Multibyte MFC Project and we also get the FALSE Positive leaks.
We can not simply add the MFC Unicode libs.
I tryed to compile the cppRestSDK manually and link it as static, but then we have too many other issues ( with libz and more ).

Did anyone have an solution or an idea? What can we do to solve this problem?

[Curry-Messi]

嗨，我们有一个大型的多字节MFC项目，并且我们还得到了FALSE Positive泄漏。
我们不能简单地添加MFC Unicode库。
我尝试手动编译cppRestSDK并将其链接为静态链接，但是随后我们遇到了太多其他问题（libz等问题）。

有没有人有解决方案或想法？我们该怎么做才能解决这个问题？

My vs2017 MFC LIBS path is "Microsoft Visual Studio 14.0 \ VC \ atlmfc \ lib".
mfcxxx.lib before MFCMxxx.lib , this is very important

[Aero9999]

I think this is because the statics in cpprest are cleared up after MFC calls _CrtDumpMemoryLeaks(), its a false positive.

The solution described here worked for me:
https://groups.google.com/g/microsoft.public.vc.mfc/c/c0k93sFlpcs#e651b944da9c619d

I had to compile my own version of cpprest though with that new class.

[tmd9936]

It's right.
But multibyte mfc project must link "mfc120d.lib;mfcm120d.lib"

I solved problem this way

You try

Project Properties
Linker->Input->Add library dependencies
mfc120ud.lib;mfcm120ud.lib