On 30.03.2016 01:41, Thalamus wrote:
Apologies if this has been discussed before, but I wasn't able to find
anything similar on the forums or web. I can't seem to figure out how to
debug a D DLL from a C# EXE. (My actual purpose here is to use D to
build native plugins for Unity 5, but Unity and Mono aren't necessary to
repro the problem I'm running into.)

The D DLL and C# are both built as 64-bit. (C# is not set to AnyCPU).
Using VS 2015 and Visual D, I can drive the D DLL from the C# EXE
without any problems, but the debugger doesn't load the D DLL symbols.
The DLL and PDB are in the same folder as the C# EXE. Everything behaves
the same if I link to the DLL statically using P/Invoke or dynamically
using LoadLibrary.

Everything from the D DLL is exposed as extern(C), listed in the .def,
etc. When I drive the DLL from a D EXE, I can break into the debugger
easily, whether I attach at launch or attach to the process when it's
already running.

I'm building the DLL using:

dmd <obj files omitted for brevity> dllmain.d dll.def -w -wi -g -map
-ofLogic.dll <res and lib files omitted for brevity> -m64 -debug -shared

Anyone know what I should try next? Am I missing something simple? :)

thanks!
Thalamus



I haven't tried debugging a C# application, but you might have to disable "Just My Code" in the global debugger options. Also make sure to allow native debugging (JIT options).

When debugging Visual D (a D DLL), I set VS (devenv.exe, a mixed C++/C# app) as the program to debug in the project debugger options. This ensures a native debugger engine is used and is the simplest way to use the mago debugger. With the "Mixed mode" engine, you can debug both C# and D/C++ in the same session.

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