[lldb-dev] PDB symbol reader status?

Vadim Chugunov via lldb-dev lldb-dev at lists.llvm.org
Wed Jul 26 17:38:11 PDT 2017

Why -fuse-ld=lld?   What does lld do differently than MS linker?

On Wed, Jul 26, 2017 at 1:10 PM, Zachary Turner <zturner at google.com> wrote:

> For clang-cl you need to use -fuse-ld=lld. For msvc only a small amount of
> pdb support was added to lldb, namely the ability to resolve file and line
> info.
> On Wed, Jul 26, 2017 at 12:46 PM Vadim Chugunov <vadimcn at gmail.com> wrote:
>> I'm trying to use LLDB built from svn trunk: for MSVC emitted binaries it
>> cannot set any breakpoints, and for clang-cl outputs it crashes when
>> setting a breakpoiint by file/line.   Are these scenarios supposed to work?
>> WinDbg works fine in both cases, so the debug info is probably ok.
>> (I'm using VS 2017 Build Tools, if that matters).
>> On Wed, Jul 26, 2017 at 11:54 AM, Adrian McCarthy <amccarth at google.com>
>> wrote:
>>> Basic PDB support is in LLDB if you're running on Windows.  LLDB has a
>>> SymbolFilePDB plugin that relies on a PDB abstraction in LLVM.  There is
>>> currently just one implementation of that abstraction, and it relies on
>>> DIA, which is a Microsoft-provided DLL on Windows for looking up
>>> information in a PDB.
>>> I'm currently working on a native PDB reader that implements the same
>>> interface without reliance on DIA, so that should eventually provide the
>>> same functionality even if you're not running on Windows.
>>> Browsing through the PDB plugin in LLDB, I see a lot of "//TODO:
>>>  Implement this" methods, so you won't (yet) have rich type information.
>>> But you can set breakpoints by name, get a stack backtrace, print variable
>>> values, etc.
>>> On Wed, Jul 26, 2017 at 11:19 AM, Vadim Chugunov via lldb-dev <
>>> lldb-dev at lists.llvm.org> wrote:
>>>> Hi,
>>>> What is the current status of LLDB's PDB file parser on Windows?   It
>>>> was announced back in 2015 that PDB support is coming soon, so I was
>>>> wondering where it's at currently.
>>>> _______________________________________________
>>>> lldb-dev mailing list
>>>> lldb-dev at lists.llvm.org
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