topic Re: Exception when using libcpr library in Archicad C++ API

Exception when using libcpr library

BrunoValads — Wed, 01 Mar 2023 11:54:25 GMT

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.

Re: Exception when using libcpr library

rajani — Sun, 17 Dec 2023 21:52:22 GMT

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.

Re: Exception when using libcpr library

Akos Somorjai — Wed, 13 Dec 2023 09:13:07 GMT

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

Re: Exception when using libcpr library

rajani — Wed, 20 Dec 2023 00:18:42 GMT

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