On Tue, Mar 22, 2011 at 04:19:46PM +0100, Ulrich Weigand wrote:
> Ian Lance Taylor wrote:
> > "H.J. Lu" <hjl.to...@gmail.com> writes:
> >
> > > Here is the updated patch. It has
> >
> > This patch is OK if it bootstraps and passes tests.
>
> I thought the _Unwind_Context structure was part of the libgcc ABI
> and should only be changed by appending to the end and/or updating
> the version field?
It is, so a change like this should be guarded by some preprocessor
conditionals if it makes any difference on any target (not sure if
we have any targets where a union containing void * and uintptr_t
would be layed out differently in a structure from void *, but
certainly on targets where _Unwind_Word is larger than void *
and they aren't new targets we risk ABI issues).
The problem is when some binaries link against older libgcc.a
and are used together with dynamically linked libgcc_s.so.
Jakub
