http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53000
--- Comment #25 from Marc Glisse <glisse at gcc dot gnu.org> --- (not a complete fix) r200821 | glisse | 2013-07-09 17:55:49 +0200 (Tue, 09 Jul 2013) | 9 lines 2013-07-09 Marc Glisse <marc.gli...@inria.fr> PR c++/53000 gcc/cp/ * call.c (build_conditional_expr_1): Preserve xvalues. gcc/testsuite/ * g++.dg/cpp0x/decltype17.C: Adjust.