Are mixed debug formats in one exe supported?

[Brian Ford <ford@vss.fsi.com>]

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.

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax:   314-551-8444