Analyzing D Binaries

[kassane]

Based on:

• Analyzing Rust Binaries #3124
• 32a0cf7
• 921247f

Support for the D demangler is something I would like to propose.

Although c++filt has brief support for D demangling in posix environments, unfortunately it doesn't fully support all _D demangling variations.
D [extern(D) - default] code can be exported to C++ [extern(C++) or extern(C++, "namespace")] and C [extern(C)].

ddemangler-src: https://github.com/dlang/tools/blob/master/ddemangle.d
druntime-demangle: https://github.com/ldc-developers/ldc/blob/master/runtime/druntime/src/core/demangle.d

References

• https://dlang.org/spec/abi.html#name_mangling
• https://dlang.org/spec/cpp_interface.html
• https://gist.github.com/kassane/6c03b4ffcae1ea6c1f3f30d54170acd0 - C++ mangling diff (from circle, D, rust) compat
• https://d.godbolt.org/z/n34nY61b8 - D class (no GC) to C++ mangling
• https://godbolt.org/z/q6cxs4d38 - D generate C++ code (mixin C, D, C++ mangling)

[dragonmacher]

I like demangling.

I see you listed a couple demanglers. Do you have any sense of how well they work?

[kassane]

In one of the articles published in 2017 D blog - newfangled name mangling, grammar mangling is made available.

https://gist.githubusercontent.com/rainers/6cdf73b48837defb9f88/raw/3db6a3c8e72222ccd6b22e8ae01c601bd585e9d8/dwebsite4.bison

However, more recent access is with the core.demangle module mentioned in the main post of this proposal (about Druntime).

dmd-frontend:

• https://github.com/ldc-developers/ldc/blob/master/dmd/mangle.h
• https://github.com/ldc-developers/ldc/blob/master/dmd/dmangle.d
• https://github.com/ldc-developers/ldc/blob/master/dmd/cppmangle.d
• https://github.com/ldc-developers/ldc/blob/master/dmd/cppmanglewin.d (MSVC)