On Sun, Jun 26, 2011 at 12:54 PM, Jason Merrill <ja...@redhat.com> wrote: > On 06/25/2011 12:13 PM, H.J. Lu wrote: >> >> This patch introduces UNIQUE_UNWIND_CONTEXT > > Where is this documented? The ABI document doesn't seem to say anything > about it. >
I added a short paragraph in the updated patch: http://gcc.gnu.org/ml/gcc-patches/2011-06/msg01922.html +@defmac UNIQUE_UNWIND_CONTEXT + +Define this macro if the target only supports single unqiue unwind +context. The default is to support multiple unwind contexts. + +@end defmac This is the implementation detail and isn't required by the ABI. With the unique unwind context, we can update the unwind context format without breaking binary compatibility. Thanks. -- H.J.
