[lldb-dev] PDB symbol reader supports C++ only?

[Zachary Turner via lldb-dev]

Various parts of lldb require knowing the source language. It’s possible
that things will mostly work if you report that the language is c++, but
you’ll probably get errors in other areas. It goes all the way down to the
CodeView level, where certain cv records indicate the original source
language. Can you check cvconst.h (ships with DIA SDK) and look for the
enumeration corresponding to source language? Does it have a value for
Rust? I’m guessing it doesn’t. When you generate PDBs for Rust you probably
need to put something unique value there, then we could properly set the
language in lldb
On Mon, Aug 20, 2018 at 7:15 PM Vadim Chugunov <vadimcn at gmail.com> wrote:

> Hi!
> I've been investigating why LLDB refuses to set breakpoints in Rust source
> files when using PDB debug info on Windows...  This seems to stem from a
> couple of checks here
> <https://github.com/llvm-mirror/lldb/blob/f6f930a3608daf81441d3c9051fd9cff84eb6d58/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp#L1509>
> and here
> <https://github.com/llvm-mirror/llvm/blob/baa88cf6cb85d4256bb0f806e1b4dc87b29ea98e/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp#L104>.
>
> I am wondering, what is the backstory there?  Are those still necessary?
> I tried disabling them and Rust debugging worked just fine...
>
>
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