llvm dev - Aug 2012 - [LLVMdev] Formats supported by llvm/Object/Archive.h

Hi, llvmdev

I've tried to use llvm/Object/Archive.h to print the archive symbol table
for standard Unix .a files by slightly extending a code in llvm-nm,
and the code crashed with wild segfault. It looks like the implementation
in lib/Object/Archive.cpp assumes completely different symbol table format
from what I have
(which I believe is SVR4/GNU variant). Which archive formats does libObject
support, and are there any plans to extend it?

-- 
Alexey Samsonov, MSK
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On Fri, Aug 3, 2012 at 6:45 AM, Alexey Samsonov <samsonov at google.com>
wrote:
> Hi, llvmdev
>
> I've tried to use llvm/Object/Archive.h to print the archive symbol
table
> for standard Unix .a files by slightly extending a code in llvm-nm,
> and the code crashed with wild segfault. It looks like the implementation
in
> lib/Object/Archive.cpp assumes completely different symbol table format
from
> what I have
> (which I believe is SVR4/GNU variant). Which archive formats does libObject
> support, and are there any plans to extend it?
>
> --
> Alexey Samsonov, MSK
>
I believe it currently only supports the llvm and Microsoft symbol
table format. I really should have documented that while writing the
code ;/

My intent was to extend it to support both gnu and bsd style formats.

- Michael Spencer

On Fri, Aug 3, 2012 at 10:30 PM, Michael Spencer <bigcheesegs at
gmail.com>wrote:
> On Fri, Aug 3, 2012 at 6:45 AM, Alexey Samsonov <samsonov at
google.com>
> wrote:
> > Hi, llvmdev
> >
> > I've tried to use llvm/Object/Archive.h to print the archive
symbol table
> > for standard Unix .a files by slightly extending a code in llvm-nm,
> > and the code crashed with wild segfault. It looks like the
> implementation in
> > lib/Object/Archive.cpp assumes completely different symbol table
format
> from
> > what I have
> > (which I believe is SVR4/GNU variant). Which archive formats does
> libObject
> > support, and are there any plans to extend it?
> >
> > --
> > Alexey Samsonov, MSK
> >
>
> I believe it currently only supports the llvm and Microsoft symbol
> table format. I really should have documented that while writing the
> code ;/
>
> My intent was to extend it to support both gnu and bsd style formats.

I see. Thanks for clarification!

-- 
Alexey Samsonov, MSK
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