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: Rob Conde (rob.conde_at_[hidden])
Date: 2017-12-12 13:50:25

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]<mailto: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/


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]><mailto: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]><mailto: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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