2013-06-27  Marc Glisse  <marc.glisse@inria.fr>

	PR c++/57509

gcc/c-family/
	* c-common.h (c_build_vec_perm_expr): New complain argument.
	* c-common.c (c_build_vec_perm_expr): Likewise.
	Use save_expr also in C++.

gcc/cp/
	* typeck.c (cp_build_vec_perm_expr): New function.
	* cp-tree.h: Declare it.
	* parser.c (cp_parser_postfix_expression): Call it.
	* pt.c (tsubst_copy): Handle VEC_PERM_EXPR.
	(tsubst_copy_and_build): Likewise.

gcc/testsuite/
	* g++.dg/ext/pr57509.C: New file.

From-SVN: r200495