C++ PATCH for c++/48115 (ICE with ellipsis and templates)

[Jason Merrill]

Here the issue was that require_complete_type doesn't do anything in 
templates, but convert_arg_to_ellipsis was assuming that it did.  The 
simple fix is to make sure we really do have a complete type.

Tested x86_64-pc-linux-gnu, applying to trunk.  Also OK for 4.6?  The 
patch seems extremely safe.
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: 48115.patch
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20110316/bfe2b8e6/attachment.ksh>