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Re: Are mixed debug formats in one exe supported?
- From: Daniel Jacobowitz <drow at false dot org>
- To: Brian Ford <ford at vss dot fsi dot com>
- Cc: gdb at sources dot redhat dot com
- Date: Tue, 23 Mar 2004 15:48:31 -0500
- Subject: Re: Are mixed debug formats in one exe supported?
- References: <Pine.GSO.4.58.0403231421470.17486@thing1-200>
On Tue, Mar 23, 2004 at 02:41:01PM -0600, Brian Ford wrote:
> I am trying to add DWARF2 support to PE/COFF for Cygwin/Mingw. They
> currently use stabs.
>
> While testing, executables end up having mixed stabs/DWARF2 debugging
> info if any system/gcc/previously compiled static libs are linked in.
> The result causes gdb to SEGV while traversing the partial symbol tables
> looking for symbol main.
>
> The problem is that init_psymbol_list is called for the executable twice
> due to mainline being set at dbxread.c:562, and again at
> dwarf2read.c:1076.
>
> So, the question. Is this meant to work? I assume the reason mainline is
> used here is:
>
> /* If we are reinitializing, or if we have never loaded syms yet, init */
>
> Why does reinitializing not clean up after itself (ie. reset the
> [global|static]_psymbols.size to 0)? Is that a leak?
>
> I'm going to keep digging, but since I have zero knowledge of gdb
> internals, I thought I'd ask and save some time. Thanks.
I can't answer any of the more detailed questions, but yes, this is
supposed to work. It's easy to produce binaries with both stabs and
DWARF-2 on GNU/Linux, and it generally works OK.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer