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Archicad C++ API
About Archicad add-on development using the C++ API.

Exception when using libcpr library

BrunoValads
Contributor

Hi!
I'm getting an Archicad breakpoint exception that closes the program when using libcpr library.

In my plugin example, I have the following simple HTTP GET request:

 

cpr::Response r = cpr::Get(cpr::Url{ "http://www.httpbin.org/get" });

 

This code works in a plain C++ project in Visual Studio.

 

I get an exception that breaks at GSNew.hpp in the operator delete:

 

inline void CCALL operator delete (void* p, size_t) throw ()
{
	GS::MemoryManager::Free (p);
}

 

This break occurs inside libcpr at session.h in line 51, in destructor:

 

~Session() = default;

 

Is there anything I can do to fix this? Apprently the same happens here.

3 REPLIES 3
rajani
Participant

Hi,

 

Could you find any solution to this problem? I am facing an almost similar problem when using the libcpr library with Archicad. (The error is different, but Archicad crashes). Iam using libcpr 1.10.5

 

cpr::Response r = cpr::Get(cpr::Url{ "http://www.httpbin.org/get" });

As you have also mentioned, this(and the POST request) works perfectly on a stand-alone C++ project for me as well.

However, when I use it with Archicad 27, it crashes and gives me an access violation error, like so, and then a stack-based cookie overrun.

I am suspecting this could be a clash with libcurl dlls (since my application already uses libcurl and libcpr is a wrapper around libcurl). Not sure, though.

 

Error details:

============================================================

Exception thrown at 0x00007FF99C111BB5 (Addon.apx) in Archicad.exe: 0xC0000005: Access violation reading location 0x0000108A3D944CF0.

The thread 0x734 has exited with code 0 (0x0).
Unhandled exception at 0x00007FF99C14B1D1 (Addon.apx) in Archicad.exe: Stack cookie instrumentation code detected a stack-based buffer overrun.

The program '[48704] Archicad.exe' has exited with code 0 (0x0).

============================================================

Any help will be greatly appreciated.

Hi,

 

Have you specified DEBUVERS somewhere in your project settings or code? That might have a side effect.

 

Also, try to put the include for cpr before any of the GSRoot includes.

 

Best, Akos

Hi Akos,

 

Thanks for the response. I tried both the fixes you suggested, but unfortunately that did not fix the issue.

I get the same errors I reported above.

 

Do you have any alternate/additional solutions that I could try to address this issue?

Thanks again.

 

Regards,

Rajani

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