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Subject: [Bug c++/45923] constexpr diagnostics, more more
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45923

--- Comment #12 from Jason Merrill <jason at gcc dot gnu.org> 2011-06-29 14:35:03 UTC ---
Author: jason
Date: Wed Jun 29 14:34:58 2011
New Revision: 175646

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175646
Log:
    PR c++/45923
    * class.c (explain_non_literal_class): New.
    (finalize_literal_type_property): Call it.
    * cp-tree.h: Declare it.
    * semantics.c (ensure_literal_type_for_constexpr_object): Call it.
    (is_valid_constexpr_fn): Likewise.
    (massage_constexpr_body): Split out from...
    (register_constexpr_fundef): ...here.
    (is_instantiation_of_constexpr): New.
    (expand_or_defer_fn_1): Leave DECL_SAVED_TREE alone in that case.
    (explain_invalid_constexpr_fn): New.
    (cxx_eval_call_expression): Call it.
    (potential_constant_expression_1): Likewise.  Avoid redundant errors.
    * method.c (process_subob_fn): Diagnose non-constexpr.
    (walk_field_subobs): Likewise.
    (synthesized_method_walk): Don't shortcut if we want diagnostics.
    (explain_implicit_non_constexpr): New.
    (defaulted_late_check): Use it.
    * call.c (build_cxx_call): Remember location.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-diag3.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/cp/class.c
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/method.c
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-diag1.C
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-ex1.C
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-friend.C
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-incomplete2.C