[Bug c++/81073] [5/6/7/8 Regression] link failure as C++ misses to instanciate some objects

["jason at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81073

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Jun 19 18:20:10 2017
New Revision: 249382

URL: https://gcc.gnu.org/viewcvs?rev=249382&root=gcc&view=rev
Log:
        PR c++/81073 - constexpr and static var in statement-expression.

        * typeck2.c (store_init_value): Always call
        require_potential_constant_expression.
        * pt.c (convert_nontype_argument): Likewise.
        * constexpr.c (potential_constant_expression_1): Adjust message.
        Use decl_maybe_constant_var_p instead of decl_constant_var_p.
        * decl2.c (decl_maybe_constant_var_p): Consider initializer.

Added:
    trunk/gcc/testsuite/g++.dg/ext/stmtexpr19.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/cp/decl2.c
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/typeck2.c
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-diag1.C
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-trivial2.C