There is a single call to unshare_expr in gigi and it is actually superfluous 
if you do things properly.

Tested on i586-suse-linux, applied on the mainline.


2012-03-07  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc-interface/trans.c (Identifier_to_gnu): Don't unshare initializer.
	(add_decl_expr): Mark external DECLs as used.
	* gcc-interface/utils.c (convert) <CONSTRUCTOR>: Copy the vector.


-- 
Eric Botcazou