Re: [Boost-users] Adding C++/CLI code to my project makes app crash on startup

Subject: Re: [Boost-users] Adding C++/CLI code to my project makes app crash on startup
From: Michael Powell (mwpowellhtx_at_[hidden])
Date: 2017-12-12 13:52:59

On Tue, Dec 12, 2017 at 8:50 AM, Rob Conde via Boost-users
<boost-users_at_[hidden]> wrote:
> Can you put together a minimal toy example?
>
> On Dec 12, 2017, at 5:14 AM, Sergio Basurco via Boost-users
> <boost-users_at_[hidden]> wrote:
>
> I have a native (unmanaged) C++ application that consumes a C# SDK using a
> C++/CLI wrapper. This is achieved using a wrapper similar to the one
> described here:
> http://pragmateek.com/using-c-from-native-c-with-the-help-of-ccli-v2/

You have the bridge entirely backwards. CLI does not bridge C# to C++.
Rather, it bridges C++ to CLI.

> So the Wrapper and the SDK are managed, but my application isn't. My
> application only makes calls to the C++/CLI wrapper. This is working well
> and worked without issues using Visual Studio 2012 and Boost 1.57.
>
> Sorry I don't have anything on GitHub doing exactly this. I'm checking all
> my binaries but none seem to be x64. The other possible reason I found for
> error 0xc000007b was linking static boost libraries. But I deleted those
> just to check and still find the issue.
>
> Thanks!
>
> Sergio Basurco
> Coherent Synchro
>
> On 11/12/2017 15:16, Michael Powell via Boost-users wrote:
>
> On Mon, Dec 11, 2017 at 4:43 AM, Sergio Basurco via Boost-users
> <boost-users_at_[hidden]> wrote:
>
> I'm building some C++/CLI code into a DLL. This DLL acts as a wrapper to C#
> code that I use from my native C++ application.
>
> I double checked that the DLL is built as x86. My Boost build is also x86.
> So I don't think it has to do with architecture. Also tried adding
> /MACHINE:X86 to the linking parameters.
>
> My CLI/C++ code does not use boost at all. It is my application that uses
> both boost code and the CLI dll.
>
> Explain that.
>
> You cannot do unmanaged things in a managed (CLI) application.
>
> You are probably referencing into an Any CPU or x64 project, which is
> not guaranteed to work, and/or may require additional parameters.
>
> I'm not sure how you link the Boost DLL with the target application.
>
> As I and others have stated, you can do this with your C++/CLI
> project, i.e. using Boost "inside", so to speak, but you need to be
> aware of the CLI-isms bridging into the .NET managed memory space.
>
> Show some projects on Github exactly what you're doing.
>
> Saludos / Best regards,
>
> Sergio Basurco
> Coherent Synchro
>
> On 06/12/2017 19:51, Steven Boswell II via Boost-users wrote:
>
> On Tue, Dec 5, 2017 at 10:31 PM, Sergio Basurco via Boost-users
> <boost-users_at_[hidden]> wrote:
>
> I'm using Boost 1.65.1 with Visual Studio 2015 (v140 compiler). Also, I'm
> using the following libs dynamically:
>
> [...]
>
> And I want to add C++/CLI code which is built with /clr.  This used to
> work with v110 and Boost 1.57.  Now I'm getting this error just when
> launching the application.
>
> 0xc000007b
>
> All binaries are 32bits. I'm also using the following define:
> BOOST_ALL_DYN_LINK
>
> Any idea on why this may happen?
>
> A Google search says that error 0xc000007b happens when you mix 64-bit and
> 32-bit code.
> Keep in mind that CLI code has to be explicitly compiled as 32-bit.
> The "Any CPU" setting tends to pick the OS' native word-size, which is
> probably 64-bit.
>
> -Steven
>
>
>
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