> All EH-related tests fail with a recent upgrade on Solaris 10. Interestingly,
> the old implementation keeps working with the upgrade.

I've applied the attached patch to mainline and 4.6 branch.  It reverts back to 
the old pattern matching code in the Solaris 8+ multi-threaded case, which is 
clearly more robust.  The rest is left unchanged.  Tested on 5 different OS 
versions (Solaris 8, Solaris 8 Containers, Solaris 9, old Solaris 10, recent 
Solaris 10).


2012-01-09  Eric Botcazou  <ebotcazou@adacore.com>

	PR ada/41929
	* config/sparc/sol2-unwind.h (sparc64_is_sighandler): Remove SAVPC and
	add CFA.  Revert back to old code for Solaris 8+ multi-threaded.
	(sparc_is_sighandler): Likewise.
	(MD_FALLBACK_FRAME_STATE_FOR): Adjust call to IS_SIGHANDLER.


-- 
Eric Botcazou