C++ PATCH for c++/31187

[Jason Merrill]

The bug here was that the duplicate declaration was causing the compiler 
to think that foo1 was a const that gets implicit static, and therefore 
not a valid template argument.  Fixed by remembering TREE_PUBLIC on the 
new decl across the call to duplicate_decls.

Tested x86_64-pc-linux-gnu, applied to trunk and 4.2 branch.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: implicit-static.patch
Type: text/x-patch
Size: 3907 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20070402/f1592061/attachment.bin>