Re: gcc 2.8.0 is broken on linux/x86 and more bug

[hjl@lucon.org (H.J. Lu)]

> 
> 
>   In message < m0xgM3M-0004ecC@ocean.lucon.org >you write:
>   > __register_frame () change in gcc 2.8.0 causes a big problem.
>   > Since __register_frame () called in crtbegin.o is in libgcc2.c and
>   > gcc -shared includes crtbegin.o and -lgcc, any libc.so built by
>   > previous gcc has __register_frame () in libc.so. Now the ABI for
>   > __register_frame () is changed, that is a big mess for Linux since
>   > shared libraries are used a lot. When the ABI of a function in
>   > shared library is changed like this, it doesn't work too well.
> It seems to me that we need two interfaces one with the old way one
> with the new way.
> 
> Furthermore, we must avoid calling "free" on any of the objects which
> come from static storage instead of malloc.  Thus, we have to keep track
> of which interface was used for each object so that we know whether or
> not its memory should be free'd.
> 
> The compiler should always emit calls to the new interfaces; the old
> interfaces would be for existing copies of ld.so which use the old
> interfaces.
> 

I think that is what my patch does. It keeps the old name and
appends _new to new interface. It seems to work for me.


-- 
H.J. Lu (hjl@gnu.org)