std::rethrow_exception is broken

[Jonathan Wakely]

On 25/03/14 17:25 +0000, Jonathan Wakely wrote:
>Tested x86_64-linux, I plan to commit this to trunk soon.
>

>commit 06a845f80204947afd6866109db58cc85dc87117
>Author: Jonathan Wakely <jwakely@redhat.com>
>Date:   Tue Mar 25 14:42:45 2014 +0000
>
>    	PR libstdc++/60612
>    	* libsupc++/eh_ptr.cc: Assert __cxa_dependent_exception layout is
>    	compatible with __cxa_exception.
>    	* libsupc++/unwind-cxx.h (__cxa_dependent_exception): Add padding.
>    	Fix typos in comments.
>    	* testsuite/18_support/exception_ptr/60612-terminate.cc: New.
>    	* testsuite/18_support/exception_ptr/60612-unexpected.cc: New.

Committed to trunk.