2012-10-25  Marc Glisse  <marc.glisse@inria.fr>

	PR c++/54427

gcc/
	* tree.c (signed_or_unsigned_type_for): Handle vectors.

gcc/cp/
	* typeck.c (build_x_conditional_expr): Handle VEC_COND_EXPR.
	* call.c (build_conditional_expr_1): Likewise.

gcc/c-family/
	* c-common.c (scalar_to_vector): Handle VEC_COND_EXPR.

gcc/testsuite/
	* g++.dg/ext/vector19.C: New testcase.

From-SVN: r192808