Re: PATCH: Share the dwarf2 unwind code between glibc and gcc 3.0

["H . J . Lu" <hjl at lucon dot org>]

On Mon, Jul 09, 2001 at 12:03:37PM -0700, Richard Henderson wrote:
> On Mon, Jul 09, 2001 at 04:06:18PM +0200, Mark Kettenis wrote:
> > IMHO HJ is heading down the wrong track.  I don't see why we need to
> > rip bits of code from both GCC 3.x and GCC 2.x.  AFAICT the code in
> > GCC 3.x (unwind-dw.c) is perfectly able to handle the frame info
> > generated by GCC 2.x.
> 
> Indeed.

I don't know enoug unwind-dw.c to fix it. That is the easiest way for
me to get it to work.

> 
> > It doesn't need to since mixing C++ code from GCC 2.x with C++ code
> > from GCC 3.x isn't going to work, and just skips the GCC 2.x exception
> > handler info.
> 
> Actually, it does.  The issue is that __frame_state_for is intended
> to be visible from glibc, which exports it to libstdc++-v2.  So in
> the end we're mixing C++ from 2.x and C from 3.x, which _is_ supposed
> to work.

It does work with my testcases.



H.J.